Is there a better stall/TC than the stock one??
09-02-2005, 09:44 AM
#1
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Is there a better stall/TC than the stock one?? Ok, here goes.
Is there a better torque converter out there than stock for ‘fast road use’ or ‘circuit use’. I’m NOT concerned with drag race performance. As long as it does what the stock stall can achieve in that area that will be fine. I’m after a very responsive/positive car that uses all of the gears and plenty of sideways action.
Basically I’ve been doing a bit of reading on stalls and from what I understand the higher the stall the more “slippage” will be present, as a rule of thumb. So although it may allow you to launch at 3000/4000/or what ever rpm’s they will have a slight delay from a roll and generally be less responsive in gear. Please correct me if this is not the case.
Admittedly a manual would probably be the best bet, but it’s not currently an option. So for lots of shifting and hard accelerating mid corner type of driving would any of the after market stalls offer anything over the stock one?
Cheers.
Is there a better torque converter out there than stock for ‘fast road use’ or ‘circuit use’. I’m NOT concerned with drag race performance. As long as it does what the stock stall can achieve in that area that will be fine. I’m after a very responsive/positive car that uses all of the gears and plenty of sideways action.
Basically I’ve been doing a bit of reading on stalls and from what I understand the higher the stall the more “slippage” will be present, as a rule of thumb. So although it may allow you to launch at 3000/4000/or what ever rpm’s they will have a slight delay from a roll and generally be less responsive in gear. Please correct me if this is not the case.
Admittedly a manual would probably be the best bet, but it’s not currently an option. So for lots of shifting and hard accelerating mid corner type of driving would any of the after market stalls offer anything over the stock one?
Cheers.
09-02-2005, 09:50 AM
#2
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i say just stick with the stock if you can't get a manual trans. i doubt there would be any benifit of using an aftermarket t.c. for that kind of use. and it wouldn't justify the amount of work you'll have to do to swap it out. but if you do want it using all gears and doing roadcourse type stuff... make sure you get a good trans cooler.
09-02-2005, 10:46 AM
#3
We sell converters for road race cars and the converter Will help as it gives less of a dead spot out of the turns
The mose popular model for your use is our ss3200 converter and the py3400 is also a great performer as it has a very high eff. rating and runs cooler when worked hard out of the turns
Mike
The mose popular model for your use is our ss3200 converter and the py3400 is also a great performer as it has a very high eff. rating and runs cooler when worked hard out of the turns
Mike
09-02-2005, 04:22 PM
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You may find it more responsive in gear especially
if you have not tuned the shifting settings. The
converter when properly selected, will let the RPM
"slide" proportional to your gas pedal and give you
pedal-proportional torque (where a low stall unit,
holding you down at 2500RPM, accelerates no
differently at 25% and 100% throttle).
One thing you want to watch, if you have a heavy
or tow vehicle, is that the higher stall converters
tend to be small diameter and have weaker lockup
clutches, unless you specifically look for one that
is meant for truck apps you might have trouble
there. Yank has a pretty broad variety of stalls
and diameters, including some that are near stock
with pretty stout clutches. My TCI on the other
hand, though only 1 - 1.5" smaller diameter, has a
pretty weak TCC (as others have also discovered).
I think 3000/2.0 is a pretty good place for road race
and 3500-up is more for showing off and drag racing,
unless you pick a lower STR. The higher you go in
stall and STR the higher your RPM will have to be
before you get efficient coupling, unlocked. The
truck and most drag racing units tend to have high
STRs which means they will "hit hard", not quite
what you want while negotiating a turn under power.
Low STR means less multiplication and less abrupt,
more control and easier on the tires and the traction.
if you have not tuned the shifting settings. The
converter when properly selected, will let the RPM
"slide" proportional to your gas pedal and give you
pedal-proportional torque (where a low stall unit,
holding you down at 2500RPM, accelerates no
differently at 25% and 100% throttle).
One thing you want to watch, if you have a heavy
or tow vehicle, is that the higher stall converters
tend to be small diameter and have weaker lockup
clutches, unless you specifically look for one that
is meant for truck apps you might have trouble
there. Yank has a pretty broad variety of stalls
and diameters, including some that are near stock
with pretty stout clutches. My TCI on the other
hand, though only 1 - 1.5" smaller diameter, has a
pretty weak TCC (as others have also discovered).
I think 3000/2.0 is a pretty good place for road race
and 3500-up is more for showing off and drag racing,
unless you pick a lower STR. The higher you go in
stall and STR the higher your RPM will have to be
before you get efficient coupling, unlocked. The
truck and most drag racing units tend to have high
STRs which means they will "hit hard", not quite
what you want while negotiating a turn under power.
Low STR means less multiplication and less abrupt,
more control and easier on the tires and the traction.
