Stall converter questions
Thread Starter
Melting Slicks
Joined: Nov 2009
Posts: 2,922
Likes: 219
From: West Branch, MI
Stall converter questions
Going to be adding a stall torque converter to my 98 A4 soon. I've never driven or rode in a car with a stall converter. I have a couple of questions that I'd like some respones to. Since the converter "slips" at lower rpms, during normal (not racing) driving, does this tend to get your transmission fluid hotter than normal? This brings me to question #2, which is, does the A4 cars have a transmission cooler built in and if so, does it provide adequate cooling or should an aftermarket cooler be used? My last question is, if a 3400 stall coverter "slips" until it hits 3400 rpm, is that the rpms where the unit "locks"? And if so, if I'm driving at 2K rpm at 70mph on the highway, is the 3400 converter slipping a little? Thanks guys.
Melting Slicks
Joined: Dec 2003
Posts: 2,857
Likes: 2
From: pawleys island sc
the speed at which the TC locks up in each gear is determined by your tune, not by the stall of the TC.
If you do not fool with your tune your TC will continue to lock up at the same speed its locking up now. So at 70mph and 2k rpm you'll be locked.
Get a trani cooler.
The car will feel "loose" off the line but you'll get used to it in a few weeks.
Anyone who drives your car will be suprised that it dosen't "jump" off the line like they ex[pect a Vett to do.
If you want it to "jump", hold the breakes, rev to 2200 and let go as you punch it.It'll jump.
If you do not fool with your tune your TC will continue to lock up at the same speed its locking up now. So at 70mph and 2k rpm you'll be locked.
Get a trani cooler.
The car will feel "loose" off the line but you'll get used to it in a few weeks.
Anyone who drives your car will be suprised that it dosen't "jump" off the line like they ex[pect a Vett to do.
If you want it to "jump", hold the breakes, rev to 2200 and let go as you punch it.It'll jump.
Le Mans Master
Joined: Feb 2007
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From: Oviedo Florida
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Your tranny cooler is up with your auto radiator( kind of all
together in one frame). Depending on the stall number the
lower you would not need a separate cooler. But tranny
coolers can be a wise thing to do. There is alot of ways of
installing a sparate cooler. MIne runs from the cooler up
front back to a B&M tranny cooler. Some bypass the front
cooler. This will be up to you.
Now I have forgot your other questions.....................
Former Vendor
Joined: Sep 2010
Posts: 682
Likes: 11
From: Anderson Indiana
Going to be adding a stall torque converter to my 98 A4 soon. I've never driven or rode in a car with a stall converter. I have a couple of questions that I'd like some respones to. Since the converter "slips" at lower rpms, during normal (not racing) driving, does this tend to get your transmission fluid hotter than normal? This brings me to question #2, which is, does the A4 cars have a transmission cooler built in and if so, does it provide adequate cooling or should an aftermarket cooler be used? My last question is, if a 3400 stall coverter "slips" until it hits 3400 rpm, is that the rpms where the unit "locks"? And if so, if I'm driving at 2K rpm at 70mph on the highway, is the 3400 converter slipping a little? Thanks guys.
Hope this helps. Let me know if you have any more questions.
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
Wrong!!!
Your tranny cooler is up with your auto radiator( kind of all
together in one frame). Depending on the stall number the
lower you would not need a separate cooler. But tranny
coolers can be a wise thing to do. There is alot of ways of
installing a sparate cooler. MIne runs from the cooler up
front back to a B&M tranny cooler. Some bypass the front
cooler. This will be up to you.
Now I have forgot your other questions.....................
Your tranny cooler is up with your auto radiator( kind of all
together in one frame). Depending on the stall number the
lower you would not need a separate cooler. But tranny
coolers can be a wise thing to do. There is alot of ways of
installing a sparate cooler. MIne runs from the cooler up
front back to a B&M tranny cooler. Some bypass the front
cooler. This will be up to you.
Now I have forgot your other questions.....................
Le Mans Master
Joined: Feb 2007
Posts: 9,296
Likes: 1,531
From: Oviedo Florida
2024 C5 of the Year Finalist - Modified
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Wrong? Go ahead and use the radiator tank for a stall converter set up and see how long the transmission lasts. Everyone knows that the fluid is routed to the radiator. Its obvious that he was asking if there was an external cooler. Even a stock set up can benefit from a cooler. And those that do not bypass the radiator are foolish because they re-heat the fluid as it passes through
question---( that's for CatusCat )
I replied from the question asked "does the A4 cars have a transmission cooler built-in"
Answer--Yes.
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Thread Starter
Melting Slicks
Joined: Nov 2009
Posts: 2,922
Likes: 219
From: West Branch, MI
Thanks all! This is exactly the info I was looking for. I'll start looking out for the aftermarket cooler now to go with the converter. Thanks to all for helping out. You guys are the best !!!
Team Owner
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