At stall, the torque converter can produce maximum torque multiplication if sufficient input power is applied (the resulting multiplication is called the stall ratio); the stall phase actually lasts for a brief period when the load (e. A systematic checkup by a professional is the best way to isolate the cause of the operating problems and recommend the most effective solution. Increased Stall Speed — A bad torque converter will take the transmission longer to engage the engine, resulting in higher than normal stall speeds. Overheating Torque converters can suffer overheating if the vehicle is revved while in drive ("power-braking") or must ascend a steep hill while towing a heavy load. A 10-inch torque converter, for example, typically has a higher stall speed than an 11-inch converter. This prompted Powertrain Services to design and manufacture a test bench for the specific purpose of being able to performance test and adjust to OEM specifications, mining and earthmoving transmissions and torque converters. Track Testing ATI's 8" TreeMaster Converter. The N/A engines got a lower stall converter. Often the torque converter is not the root cause. ie the vib goes away after a while. 55 rear gear output and performance. Manufacturers test this by locking the rotor and then monitoring the motor temperature as current is powered into the motor. Torque Converter Stall Test: Stator and Stall Speed. TCI BREAKAWAY® CONVERTER, GM, 1965-91 TH350/400 With DUAL BOLT PATTERN2400-2600 rpm flash stall File Photo. Replacing a torque converter is a fairly big job and they aren't that cheap. There is only so much room in a std bell housing to play with. They are available with various RPM stall speed offerings to accommodate any mixture of modifications including higher compression ratios, aftermarket camshafts, aftermarket cylinder heads, lower gear ratios. 11" diameter, 1. What you're asking about is more correctly called a high stall or higher stall converter. Best Answer: look up the stall speed test procedure for the torque converter and the normal range of results for your vehicle, then run the test. 7 converter. While testing an earth-moving machine with a Stall Test we can gain information about engine performance, torque converter condition, transmission condition and even about brake condition. 5L with 4L80E Transmission. TCRS® sets the industry standard for precision alignment and is the only system available with all the tools to do the job right,. The Turbo cars got a different converter, and it had a stall speed of about 2200 RPM. You can diagnose any torque converter problems by doing a stall speed test but before that, you should clearly know the stall speed specifications of your engine and the torque converter first. Increased stall speed - A bad torque converter will take the transmission longer to engage the engine, resulting in higher than normal stall speeds. Also, ballooning is a permanent condition. engine torque Figure 3: Converter stall torque in relation to the engine torque curve One says a torque converter is "looser" if, compared to another torque converter, it has a higher slip at the same torque level, which also means that it transmits less torque at the same slip level. Each Torque Converter is rebuilt using a patient process to ensure quality. 4 Preliminary Check, Fluid Minimum Maximum Before stall. All PATC torque converters are spin balanced and leak tested. A worn or dysfunctional torque converter can prevent transmission fluid from being properly pressurized, which in turn negatively impacts transmission gear function and operation. All torque converters are factory pressure tested and checked for balance. Stallion Power Stroke Torque Converter By Precision Industries. 2000) IN ORDER TO PERFORM THE REVISED TORQUE CONVERTER CLUTCH STALL TEST. You will see some varied 'Stall-Rates' and other information on Mopar Torque Converters. It feels like driving over a cattle grate – a vibration that lasts for just a few seconds, and occurs in the 35-45 mph range. Any freshen up, restall or repair includes all new bearings, pressure test and balancing. They manufacture the stator with fin lengths, angles and curvitures designed to meet the torque of the 5. Smooth ride for the daily driver. It only has 300-1 gears and I would like to match the converter with the rest of the drive train. If we had changed the 3. In general, the higher the stall, the less efficient the converter is at high speed. Torque converters can fail for many reasons, including dirty fluid, overheating and problems with stall speed, which is the RPM at which your torque converter shifts power from the engine to the automatic transmission. The torque converter converts the power from the engine, seamlessly and smoothly to the transmission instead of having a clutch to assist on take off as in a standard transmission. Description: These Torque Converters are built in the USA with the highest grade components and come with a Lifetime Non-Transferable Warranty for defects in material and workmanship under normal and properMore Details ». The converter does "swell" and then return to original shape. Place your foot firmly on the brake pedal, and place the transmission's shift selector in Drive. A torque converter will provide a range of stall speeds based on the amount of load that is placed on the torque converter. l If engine speed is high, go to Transmission Malfunction 10. Almost acts like I put it in Neutral and then in drive. There is a flex plate in this area where the torque converter is installed onto. A Honda Torque Converter needs to be kept in good working condition in your vehicle. The torque converter stall test provides an engine speed for comparison with the engine speed from the double stall test. Quick Quotation via Email. Fluid pressure it routed through the input shaft into the converter clutch, which engages the clutch. which is the correct one?. If the stall speed is above the specified range, there is slippage in the forward clutch or in the 1st gear one-way clutch. Some manufacturers don't recommend using a stall test because it stresses the transmission, so if you use this procedure, do not do it for more than five seconds at a time. The check engine light is on and I don't know what to do. Model Build Information MN7 (perfered transmission for FIERO swaps). Type the value you are converting next to the unit. Try the lockup switch first, it is basically "free". Torque Converter Help Well, I've done a lot of searching around here, and haven't been able to find out what kind of actual parts/specs to look for in a replacement torque converter. Most reputable torque converter manufacturers will not sell you a 12" converter with a higher stall speed than this because the throttle response just becomes too undesirable. Re: Torque converter issue? Take the service manager (or better yet, the technician that will be working on your traverse) with YOU on a test drive. Mfg Part # 32002. There are four main areas to address when dealing with torque converters: operation, identification, diagnosis and rebuilding. What is the stall speed of the stock OEM torque converter in a' ford econoline E-300 1 ton,C-4 trans?I need the - Answered by a verified Classic Car Mechanic We use cookies to give you the best possible experience on our website. Torque converters can multiply torque at a 2:1 to 3:1 ratio. Bigger converters = lower stall but its having limited resultsplus it $$$. the bigest variable is that the same converter will stall at different speeds depending on what engine it is behind "example" take a car that has a 305 motor 150 hp 700r4 stalls at 1600 rpm - take motor out and put in a 350 300 hp now converter stals at 2200 rpm now take out 350 put in a 502 500 hp now converter stalls at 3000 rpm get the idea. The hard parts of the torque converter that really affect the stall speed are the overall size of the converter, the pump blade angle, and the stator. 2000) IN ORDER TO PERFORM THE REVISED TORQUE CONVERTER CLUTCH STALL TEST. Some manufacturers do not recommend using a stall test because it stresses the transmission, so if you use this procedure, do not do it for more than five seconds at a time. Why Do Racers Choose Hughes Performance?. Subject: Possible Torque Converter Problems IP: Logged Message: I have a 1998 Dakota with 151,000 miles on it. The stall test checks the holding capacity of the converter's stator overrunning clutch assembly and the clutches and bands in the transmission. 9 Transmission Torque Converter 2212503602 7 Speed AWD 4-Matic OEM See more like this EDGE,ESCAPE,EXPLORER,FUSION,MARINER, 6F35 Transmission Torque Converter 73-102 Best price, best quality, refundable core charge. It is loose enough to spool most turbos, in most elevations and climates, while maximizing low end grunt and keeping the torque converter tight enough when the turbo lights and horsepower is being made. I understand our 1st gen. One common thread that we found during all of our conversations is that the manufacturers rely on their racer contingent to constantly test, test, test, and provide them with data both before and after the converter's installation, in order to better analyze what's happening with each of the particular torque converter combinations they. 160 likes · 3 were here. The converter does "swell" and then return to original shape. DO NOT USE EARLIER VERSION STALL TEST TO DETERMINE CONDITION OF THE TORQUE CONVERTER CLUTCH. A broken spring can cause the valve to become stuck and result in converter clutch release complaints. Stall torque is the maximum torque that can be applied to the shaft and cause the motor to stop rotating. Output shaft. But for daily driving it is suggested that the TC stall speed be under the torque peak. The speed of the engine at torque converter stall indicates whether the engine and the. Part II: Understanding Torque Converter Stall Speeds This is the second segment in our series on stall speeds. This allows the transmission to operate more efficiently at higher RPM. Competition Stall Converter. When I install Torque Converter do I put Transmission Fluid in it first??? Welcome to Club Hot Rod! The premier site for everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more. Stock converter stall rpm is usually about 1600 rpm,this is when it stops slipping and grabs which in turn puts the engine under a harder strain starting. Problems with any of these components can cause the vehicle to shudder on take-off or stopping. The torque converter is a wear-free starting device which is adapting itself infinitely variable to the required conditions (road resistance). trucks (in stock form) are fitted with a torque converter that has a very high stall rate, no means of lock-up, and transmit power by the use of a fluid coupling. You also get a 29 element Borg Warner forward sprag and a quality built torque converter with your choice of stall speeds of 1600 to 2000 RPM’s. This converter is the big brother of the 3600 with all of the same features, including the lightweight billet cover. I have a 1966 mustang with a c-4. 9L Cummins, which makes a great 140 to 600 HP hauler or racer. Stall speed: 2,300-2,700 rpm. True, when you mash the throttle, the stall speed of the converter does come into play before the vehicle begins to move. com FREE DELIVERY possible on eligible purchases. A higher stall converter works great on an otherwise stock SSR to give greater acceleration without extensive engine modifications and will work with a stock tune and lower octane fuel. A worn or dysfunctional torque converter can prevent transmission fluid from being properly pressurized, which in turn negatively impacts transmission gear function and operation. The speed of the engine at torque converter stall indicates whether the engine and the. As our 2017 Mustang GT progresses through each of those stages, the factory torque converter found in the 6R80 six-speed automatic transmission just isn’t going to cut it. A rather simple test can determine whether the torque converter is failing. He is working on a larger diam torque converter. Just tell us what your needs are and we will build a torque converter that will get the job done and hold up under the most extreme conditions. the bigest variable is that the same converter will stall at different speeds depending on what engine it is behind "example" take a car that has a 305 motor 150 hp 700r4 stalls at 1600 rpm - take motor out and put in a 350 300 hp now converter stals at 2200 rpm now take out 350 put in a 502 500 hp now converter stalls at 3000 rpm get the idea. Here's how: 1. If a high performance engine makes power at a higher rpm, then a higher stall speed torque converter can put more power to the ground quicker. A disadvantage with the popular three element torque converter is that its stall torque ratio is only in the region of 2:1, which is insufficient for some applications, but this torque multiplication can be doubled by increasing the number of turbine and stator members within the converter, so that there are more stages of conversion (Fig. You can diagnose any torque converter problems by doing a stall speed test but before that, you should clearly know the stall speed specifications of your engine and the torque converter first. SSTB4000 Torque Converter 4L70E LS2 - Still the smaller 245 mm frame with an even higher stall torque ratio, being a 4000 stall and a 2. The police interceptor converter is the same as well. If an engine is basically stock, a high stall is a waste and can actually cause less performance. BTW, stall speed is a very misunderstood topic. Best Answer: look up the stall speed test procedure for the torque converter and the normal range of results for your vehicle, then run the test. Torque converter problems can often be identified by the symptoms; therefore, the need for conducting a stall test is minimized. It actually revs more than the HP22 behind my 3. Precision Industries designed and manufactured every part of their 6R140 torque converter, except for the bearings and one-way clutch. Postofficejoe 29,784 views. 9l Cummins Billet Cover Triple Clutch Hd Torque Converter $799. ie the vib goes away after a while. hand brazed, reinforced impellar and turbine fin tips. All of the internal components in 12 inch ford torque converters can be easily interchanged excluding the lockup pistons. Stall speed is the RPM for when the converter wants to "go", simple laymens explanation or heres a detailed one from TCI Stall speed --- the rpm that a given torque converter (impeller) has to spin in order for it to overcome a given amount of load and begin moving the turbine. What a relief!!! Stall Test Testing 1. but there are two, one with stall speed 1420, and one with 1895 stall speed. Track Testing ATI's 8" TreeMaster Converter. mc1995 hyd 4 234 244 303 313. That way the engien has to accelerate from peak torque to peak hp. Replacement torque converters with higher than stock stall speeds are available for performance applications. Because these type of converters allow the engine to operate at higher speeds when they are making the most power. This test checks torque converter stator overrunning clutch operation, and holding ability of transaxle clutches and low-reverse brake. A fluid coupling is a two element drive that is incapable of multiplying torque, while a torque converter has at least one extra element—the stator—which alters the drive's characteristics during periods of high slippage, producing an increase in output torque. However, the best way to test the true stall speed of your converter is to do a flash stall test. ) the unit shifts 1-2-3-4-6. You will see some varied 'Stall-Rates' and other information on Mopar Torque Converters. TC Stall can be caused by low fluid level, faulty torque converter controls or internal seals. A broken spring can cause the valve to become stuck and result in converter clutch release complaints. Vehicles That Need High Stall Torque Converters. By making changes to each of these parts, a torque converter manufacturer can dial-in where the converter will begin to stall the engine. If the engine stalls as a result of the TCC stall test, then perform the Repair Procedure. It’s good to have stall in the TCC because without it, your vehicle would die every time you came to a stop. The student will identify common, standard non-lockup torque converter and common lockup torque converter malfunctions that can result in reduced mpg. Choose from a variety of stall speeds to help you put maximum low-end power to the pavement. Torque Converter Tester PTU & Axle Tester FF AT Durability Test RIG Torque Converter Tester DCT Clutch Module MGF Tester Oil Pump Tester Check torque converter hydraulic function. Torque converter stall speed. This involves rolling down the road at about 15-20km/h and then standing on the throttle. The 48RE/47RE has 1st gear TCC capability, and when the solenoid is mechanically restricted it will cause the TCC to apply in first gear. He installs it in a Camaro that has a 500HP 454 engine. Here we can calculate Torque, Force, Distance. 15 Blade Stock Stall. Same convertor in a low torque / low weight vehicle / low final gearing will have a low flash speed. Most reputable torque converter manufacturers will not sell you a 12" converter with a higher stall speed than this because the throttle response just becomes too undesirable. These torque converters are designed for use with a trans-brake and great for power adders such as nitrous, superchargers, and turbos. Re: good torque converter stall speed? The higher stall speed keeps the R's up where the engine develops more power, even with a low end cam it'll have much more HP at 2000 than 600. 7-10 business days to build TCI® strives to produce the best torque converters in the industry. Torque Converter vs Stall Converter: Which is better? Every torque converter is a 'stall' converter, they just stall at different speeds. Good evening everyone, I need some help understanding the concept of torque converter stall. You can also go to the universal conversion page. Quick Quotation via Email. Vehicles manufactured after 1980 generally include these sensors. Also consider the resistance you will have against the engine. That's about all I have to add to this thread. The torque converter is only a small part of your automatic transmission. A torque converter will provide a range of stall speeds based on the amount of load that is placed on the torque converter. Put a 360 in front of a 318 904/converter and it may stall to 2300. Online diesel mechanic course and training about Automatic Transmission and Torque Converters. Part of the process involves ensuring that each unit is built to spec. An automated torque converter dynamometer test cell was developed to perform these studies, and special converter test fixturing is utilized to isolate the test unit from outside disturbances. Stall test consist of determining maximum engine speed obtained at full throttle in "D' and "R" positions. When accelerating, the torque converter transfers increased torque to the transmission. This Hi Stall Torque Converter will suit any 6 Cyl Ford Falcon EF to AU with a 93LE Tanged pump drivein a 4 Speed BTR Automatic Transmission complete with Lock Up Clutch. When using a transbrake, stall speed should be selected to be somewhere around 300-400 rpm higher than the peak torque RPM range, since brake-equipped cars tend to drop a few hundred RPM upon release of. You will see the engine speed go up 200 rpm, then drop back down a few seconds later when the torque converter relocks. In order to check your torque converter, you might have to perform a stall-speed test. The hard parts of the torque converter that really affect the stall speed are the overall size of the converter, the pump blade angle, and the stator. It started to do this just out of the blue one day The fluid was dark so I changed it, helped a little. transmission failure. It feels like driving over a cattle grate – a vibration that lasts for just a few seconds, and occurs in the 35-45 mph range. You can also go to the universal conversion page. 0-lq4 or lq9, cath port or sq pt, dod, afm, or vvt, current mods & later mods, main goals for truck, increased power down low, midrange, top end, type of idle- smooth. When there is no rotation in the motor, the wound coils are acting as a fixed resistance. Postofficejoe 29,784 views. Vehicles That Need High Stall Torque Converters. If it does manifest while you do the test, then the problem is likely with the engine. The improved design and high-quality material of the Sonnax torque converter limit spring 44912-02 provides high allowable working stresses, preventing fatigue and breakage. Place the selector lever in the "R" position and perform the stall test by the same procedure as previously described. 7 converter. 00 core charge will be billed to you at the time of shipment, then, cheerfully credited to your account upon receipt of your buildable core. torque converter stall test - continued Manual 1 Loader, Light, Scoop: 2. But often simply disconnecting the clutch solenoid connector solved the shuddering or stalling condition. TCR626 TF6 A904 Jeep Torque converter, test torque 1978-on This is a lockup design converter with the lockup clutch omitted. It will also unlock as you approach wide-open-throttle or if you just accelerate quickly. True, when you mash the throttle, the stall speed of the converter does come into play before the vehicle begins to move. These can be ordered in stall speeds of 1200 to 5000. When people would complain about torque converter clutch problems and the 125C was installed we ran a quick test. A speed-stall test helps to determine if a vehicle is experiencing a torque converter problem. The same converter will stall at a lower rpm behind a less torquey - higher rpm engine. So Joe Racer goes out and buy's a THM 350 torque converter labeled as a 3,000 stall converter. ie the vib goes away after a while. Subject: Possible Torque Converter Problems IP: Logged Message: I have a 1998 Dakota with 151,000 miles on it. We make torque converters for all makes and models: on highway, off highway, as well as OE converters in small runs up to 20,000 a year. With B & M Torque Converters, transfer of rotating power from a prime move becomes easier. the bigest variable is that the same converter will stall at different speeds depending on what engine it is behind "example" take a car that has a 305 motor 150 hp 700r4 stalls at 1600 rpm - take motor out and put in a 350 300 hp now converter stals at 2200 rpm now take out 350 put in a 502 500 hp now converter stalls at 3000 rpm get the idea. Most of the time it is a stuck Torque Converter Clutch (TCC) solenoid, but this is not the only cause of this problem. The aftermarket performance converter that is properly matched to the turbo system will allow for maximum acceleration. The speed of the engine at torque converter stall indicates whether the engine and the. Actual curb or shipping test. The torque converter is only a small part of your automatic transmission. Torque Converters ProTorque works hard to have something for all levels of performance and to ensure every customer has a product suited to their individual needs and overall vehicle combination. Hello forum! I have a code P0743 on a 2004 VW with a 09G transmission. Since you know how to duplicate the issue at hand, this will give them a very good example. The reason for this is that there is always an operating condition with a closed torque converter for transmission types with large total ratios and. If you want to check the torque converter, it is necessary to test a stall speed. The design promises to improve fuel economy in the EPA’s city cycle by up to 6. The torque converter output is stalled while the engine is operated at full throttle. Type the value you are converting next to the unit. The test against one of our competitors' torque converter was performed using one of their most popular torque converters and as you can plainly see the stall of both torque converters are very similar although the competitor rated their STR higher than ours. Was this site helpful?. Stall Test: The valvebody is also equipped with an FB trans-brake. Testing for Bad Torque Converters. A stall speed that is 400 rpm or more below the specified range indicates a faulty torque converter. Typically engines that produce more low-end torque will increase the stall speed. However, not all the time bringing the car to the mechanic is doable or a great choice. Disconnect the drive shaft(s). A video series to explain the basics of a torque converter, how they are built, the parts inside a torque converter, and general overview of how a torque converter works. The one-way clutch allows the stator to rotate in one direction only with the engine's crankshaft and converter impeller/shell. That way the engien has to accelerate from peak torque to peak hp. Industry consultation identified the need for an alternative transmission and torque converter bench testing service. TorqueConverter1. It is the power of the engine that makes the stall change. The converter will put you much closer to your powerband on launch and really help you get out of the hole hard a ton harder. TCI sTREETFIGHTER® CONVERTER, GM, 1965-91 TH350/400, 3500 stall, With DUAL BOLT PATTERN AND WITH ANTI-BALLOONING PLATEDesigned with the street/strip application in mind, this torque converter benefits more radically prepared street machines (those with performance cams, aftermarket carbs and higher compression ratios) to bring the launch RPM. Bad Torque Converter Clutches- Modern torque converters will lock to create a true physical connection between the automatic transmission and the engine. Stopped by my local mechanic and had him test ride with me with the truck hooked up to a computer. TCRS® sets the industry standard for precision alignment and is the only system available with all the tools to do the job right,. itself, Or pour what fluid you can in then let it set over night cause it will seep back into the t. A so-called Stall Speed Test can be performed for all machines (cars & trucks) with a torque converter. A systematic checkup by a professional is the best way to isolate the cause of the operating problems and recommend the most effective solution. Can hit 3000rpm while stationary now. Stall speed is directly related to the amount of torque your engine produces--the more torque, the higher the stall speed. Postofficejoe 29,784 views. Yes, the car was flying alright, flying right back to the trailer after 1st round every week. On top of this, our Low Speed Lock-up Torque Converter is structured to boost clutch performance and has a large-scale increase of over 80% for the torque converter's lock-up range (using JC08 testing standards). Best Darn Torque Converters in the World! Acura Allison AMC Audi BMW Buick Cadillac Chevrolet Chrysler Daewoo Datsun Dodge Eagle Ford Geo GMC Honda Hyundai Infiniti International Harvester Isuzu Jaguar Jeep Kia Land Rover Lexus Lincoln Mazda Mercedes Mercury Mini Mitsubishi Nissan Oldsmobile Peugeot Plymouth Pontiac Porsche Range Rover Renault. All PATC torque converters are spin balanced and leak tested. 3L Power Stroke Diesel - What OEM torque convertor stall speed? - Transmission shop ask if I want change stall speed on this 2000 F350. We can take a look at your existing converter or can build you a whole new custom build specifically for your combination. Torque Converters ProTorque works hard to have something for all levels of performance and to ensure every customer has a product suited to their individual needs and overall vehicle combination. Freeasestudyguides. hand brazed, reinforced impellar and turbine fin tips. The ZF-Powershift Transmission 4 WG-92/98 TSC is composed of a hydrodynamic torque converter and a rear-mounted multi-speed powershift reversing transmission with integrated transfer case (see Table-1). In order for our customer's to make informed decisions, we feel that is important for them to know what they are shopping for. Torque converter stall is when the impeller is spinning while the turbine is held stationary. Preliminary Check, Fluid. Quick Quotation via Email. It also multiplies engine torque so you can take off from a dead stop easier. To perform a stall test, install a tachometer, chock all four wheels, and set the parking brake. Thor 1350-1500 Stall, 68RFE Torque ConverterThe "Heavy Hammer" Series of Thor Converters are designed for heavy duty applications, commonly used for towing, hauling, plowing, and offroad. By making changes to each of these parts, a torque converter manufacturer can dial-in where the converter will begin to stall the engine. We've worked on a lot of PTC torque converters, and I have yet to ever seen one that was ballooned. The student will identify common, standard non-lockup torque converter and common lockup torque converter malfunctions that can result in reduced mpg. This stall test is used in many diagnostic procedures. The amount of stall needed to overcome the load depends on how much the torque converter needs to spin to generate enough fluid force on the turbine to overcome the resting inertia of the vehicle in wide open throttle. Higher Stall Speed/Gear Engagement RPM The ‘stall speed’ is the point at which the engine RPMs are high enough for the torque converter to transfer power from the engine to the transmission. This is how to carry it out: Turn the ignition key and start up the engine. If a high performance engine makes power at a higher rpm, then a higher stall speed torque converter can put more power to the ground quicker. This is true for a 3000 RPM converter. Only Carbon clutch torque converters should be used in 1996-97 trannys. Our 3/4 Race series of torque converters is intended for street/strip combinations, with various stall speed offerings to accommodate any mixture of modifications including higher compression ratios, aftermarket camshafts, aftermarket cylinder heads, lower. SSTB4000 Torque Converter 4L70E LS2 – Still the smaller 245 mm frame with an even higher stall torque ratio, being a 4000 stall and a 2. ) the unit shifts 1-2-3-5-6 with torque converter clutch. This valve limits converter release pressure. This is the locked rotor torque. The torque converter is composed of four members. What is stall-speed? Stall- speed is the RPM of the engine when the transmission puts full power to the drive wheels. This lock-up style converter is completely redesigned by the engineers of Weistec to have a 2500rpm stall speed. The pump (the side of the torque converter that pumps the fluid into the stator) is bigger on the 6. I have a big block duster with a 727 running a stock torque converter (I can only brake torque it to about 1200-1400 rpm). The torque converter and Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic have been modified to reduce the possibility of this condition from occurring. 980 60 foot time (12/13/14). Torque Converter Stall. TCI 700R4/4L60E Street Fighter 10" Torque Converter, 30 Spline, 3500 Stall Speed, 12" Lock-Up is pressurized and subjected to a leak test to confirm the integrity of all weld seams. That same 10. Driving and how it acts in the rain - Duration: 6:40. The stator resides in the very center of the torque converter. Torque converter clutch solenoid. The first is the stall speed of the torque converter. Bigger converters = lower stall but its having limited resultsplus it $$$. 2000) IN ORDER TO PERFORM THE REVISED TORQUE CONVERTER CLUTCH STALL TEST. Online diesel mechanic course and training about Automatic Transmission and Torque Converters. Torque converter stall speed is just the highest speed the engine can turn the torque converter when the truck is kept from moving. Drive the same car without changing anything to the middle of Iowa, and it may stall up to 2000 rpm's. transmission failure. Essentially, the argument goes that the stator redirects flow which makes the torque converter "more efficient", thereby multiplying torque. What happens when you have a major transmission problem and are getting conflicting advice from anyone who has ever picked up a wrench? I did three days of research on all the local experts, called them for estimates, read internet reviews and asked around. The torque converter is a coupling between. Testing for Bad Torque Converters. Notes 1,900-2,400 rpm, Actual stall speed may differ due to engine combination, gear selection, and vehicle weight. torque converter stall speed test A stall test can be used on many older transmissions to check its ability to hold torque and the operation of the converter one-way clutch. You can get an 8" diameter converter that is rated at 5000 RPM stall speed, but it may only stall up to 4000 or 4200 RPM in your car because you don't make enogh torque. A looser torque converter exerts less resistance on the engine. Torque Converter. A torque converter’s job is to take the horsepower an engine produces and multiply that to make the car accelerate. Select the unit to convert to in the output units list. At stall, the torque converter can produce maximum torque multiplication if sufficient input power is applied (the resulting multiplication is called the stall ratio); the stall phase actually lasts for a brief period when the load (e. This involves rolling down the road at about 15-20km/h and then standing on the throttle. 10" diameter torque converter with 11-7/16" bolt pattern, 2800-3200 RPM Stall The 3/4 Race torque converter is the first series being brought to market and is intended for street/strip combinations, with various RPM stall speed offerings to accommodate any mixture of modifications including higher compression ratios, aftermarket camshafts, aftermarket cylinder heads, lower gear ratios, and. If the stall speed of the torque converter is too low there can be some associated "turbo lag", or delay, until the engine rpm comes up and the turbo starts to build boost. What is torque converter stall speed? According to Hughes Performance , torque converter stall speed is the maximum amount of engine rpm that can be achieved in an automatic transmission-equipped vehicle while the transmission is in a forward operating range without generating any driveshaft motion. If the engine stalls as a result of the TCC stall test, then perform the Repair Procedure. How to perform a stall-speed test. Here's how to test your torque converter: Take the following precautions Check with your car or transmission manufacturer to make sure it's safe to run the test. Simple by both design and function, torque converters are fairly easy to diagnose when they develop problems. Maximum acceleration from a torque converter is attained when the exact stall speed occurs at peak engine torque. The torque converter stall speed is that speed beyond which the engine will not turn when drive is engaged and the brakes are fully on. DO NOT DO STALL TESTS ON CARS EQUIPPED WITH TRANSBRAKES. The torque converter is a hydraulic coupling which takes the engine’s mechanical force and converts it into hydraulic pressure. Wait for a few minutes for the engine to warm up, then gently press the accelerator twice and rev up the engine. Stallion Power Stroke Torque Converter By Precision Industries. All torque converters are factory pressure tested and checked for balance. We custom build our converters one at a time to insure the level of performance and reliability that the racing and performance converter industry demands. Ideally you want the stall to lock up somewhere close to the peak torque of the engine. But choose not to at this point I do not want to screw her up. Online diesel mechanic course and training about Automatic Transmission and Torque Converters. Torque Multiplication Torque converters can multiply torque at a 2:1 to 3:1 ratio Exact amount depends on the design of the impeller, stator, and O turbine and impeller RPM The point at which maximum torque multiplication occurs is near O the stall speed of the converter During the torque multiplication phase, turbine speed is significantly lower than impeller speed A torque converter attached. The Turbo cars got a different converter, and it had a stall speed of about 2200 RPM. 00 Brand: Ford. Because of thisw I suggest a torque converter with a stall speed of 3400-3800rpm. Most BMW models with automatic transmissions, from the late ’80s-on, utilize a clutch within the torque converter. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may vary depending on the model. 10" diameter torque converter with 11-7/16" bolt pattern, 2800-3200 RPM Stall The 3/4 Race torque converter is the first series being brought to market and is intended for street/strip combinations, with various RPM stall speed offerings to accommodate any mixture of modifications including higher compression ratios, aftermarket camshafts, aftermarket cylinder heads, lower gear ratios, and. About Hellcat. TORQUE CONVERTERS. This means that a torque converter designed to stall at 3,500 RPM with a mild small block might stall might stall at 4,000 RPM behind a fire-breathing LSX454R with 720 pound feet of torque. usually when the converter goes you will get a vibration around 40 to 50 mph which sometimes can be driven through. The TCRS® system has been proven on more than 8-million torque converters and is in use at the big three automakers Ford®, General Motors® and Daimler Chrysler®. We custom build our converters one at a time to insure the level of performance and reliability that the racing and performance converter industry demands. 96 I ran during the Test and Tune prior to the event! Thank again for an absolutely AWESOME converter! » Marka Gallina, Gallina Racing. Many of these torque converters have over size Red or High Carbon clutch lining and billet covers. You want the problem you're having to manifest. We make torque converters for all makes and models: on highway, off highway, as well as OE converters in small runs up to 20,000 a year. TRUCK & SUV CAMSHAFT SPEC PAGE www. A 10-inch torque converter, for example, typically has a higher stall speed than an 11-inch converter. Each TCI® converter is built to exact specifications and is Triple Tested during assembly. This diagnostic trouble code (DTC) is a generic OBD-II powertrain code. Some manufacturers don't recommend using a stall test because it stresses the transmission, so if you use this procedure, do not do it for more than five seconds at a time. What I would do is leave the converter out of your cam selection. Its job is to redirect the fluid returning from the turbine before it hits the pump again. Another way to see if you have a broken torque converter is to put it to the test. A "stall test" can be used on many transmissions to check its ability to hold torque and the operation of the converter one-way clutch. The TCI® Triple Test procedure for torque converters includes run-out testing, leak testing and computer balancing so that you can be confident you’re receiving a torque converter that’s perfect for your specific application. Once the crankshaft moves, the flex plate spins and allows the conversion of the torque energy from the engine to the transmission to take place. 0-lq4 or lq9, cath port or sq pt, dod, afm, or vvt, current mods & later mods, main goals for truck, increased power down low, midrange, top end, type of idle- smooth. ) the unit shifts 1-2-3-4-6. As the vehicle warms to operating temperature, the transmission's performance returns to normal. Torque converters can multiply torque at a 2:1 to 3:1 ratio. Aaron Radd 68,610 views. Once the stator is turning freely with the other elements, the fluid just passes between its vanes to reenter those of the impeller. Always inspect the dowel pins in the engine and the dowel pin holes in the transmission case. Torque Converter Rebuilding Systems. For these devices, the stall torque is greater than or equal to the maximum output torque for a given input speed. Inside AFE's New Torque Converter It's pretty common that the first performance upgrades diesel owners make to their trucks are in the form of a cold air intake, high-flow exhaust system and performance programming of some kind.