Converter Efficiency by Dyno Results
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From: East Central Florida
Converter Efficiency by Dyno Results I'm interested in converter efficiencies but there is not
much data out there other than on Yank's site. I would
like to dig at this using same-car, same-session, locked /
unlocked dyno pull pairs. I have found only a few of these
in my searching but maybe there's more that just isn't
presented or doesn't match my keywords. I'm looking to
develop some charts of efficiency across the RPM band
(not just peak #s) for any converters I can get data on.
If you have back-back, locked-unlocked pulls in graphical
or tabular form can you post them up, or post a link?
Along with converter type.
much data out there other than on Yank's site. I would
like to dig at this using same-car, same-session, locked /
unlocked dyno pull pairs. I have found only a few of these
in my searching but maybe there's more that just isn't
presented or doesn't match my keywords. I'm looking to
develop some charts of efficiency across the RPM band
(not just peak #s) for any converters I can get data on.
If you have back-back, locked-unlocked pulls in graphical
or tabular form can you post them up, or post a link?
Along with converter type.
Last edited by jimmyblue; Nov 2, 2004 at 02:40 PM.
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Joined: Apr 2002
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From: Mahwah, NJ
Here you go: (Midwest 3200/2.0):
http://www.vettecaliper.com/TR224ONLYA4.jpg
This, unlike EVERY other graph I have seen, has the rpm scale correct for both (particularly the unlocked) run. I have tried to get files from people with back-to-back locked/unlocked runs with no luck. I am very happy with the very top end loss, but a little concerned about the loss at torque peak (5000)... kind of makes sense, but on the other hand, people talk about the loss should be way down that far past stall rpm, but I have never seen correctly scaled graphs.
http://www.vettecaliper.com/TR224ONLYA4.jpg
This, unlike EVERY other graph I have seen, has the rpm scale correct for both (particularly the unlocked) run. I have tried to get files from people with back-to-back locked/unlocked runs with no luck. I am very happy with the very top end loss, but a little concerned about the loss at torque peak (5000)... kind of makes sense, but on the other hand, people talk about the loss should be way down that far past stall rpm, but I have never seen correctly scaled graphs.
Thread Starter
Moderator
iTrader: (11)
Joined: Mar 2002
Posts: 12,604
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From: East Central Florida
Thanks. I transcribed the numbers as best I could
eyeball them, and it looks like that converter hits 95%
efficiency at 5500RPM and sees 97% before it's done.
That stall / STR combo seems more like what I'd pick
today, having tried a slightly lower stall / higher STR
myself (no dyno time yet).
Will be interesting to see what else comes around.
eyeball them, and it looks like that converter hits 95%
efficiency at 5500RPM and sees 97% before it's done.
That stall / STR combo seems more like what I'd pick
today, having tried a slightly lower stall / higher STR
myself (no dyno time yet).
Will be interesting to see what else comes around.
Teching In
Joined: Oct 2004
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I would also like to see some more information on this subject. I only put down 371 hp on a 150 shot wet with a 1998 Trans am. The car has a tci ssf3500 stall with a 2.5str (if I remember right), slp lid, true duals (no cats), free mods, and a granetelli maf. Anybody else have any dyno numbers with mods similar to this? Also the converter was unlocked during the dyno runs and the a/f was 11.8 to 11.9.
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I hate TCI. I burnt a tranny up messing with a TCI SSF 3500. Everyone told me that I should use Yank, PI, or Vigilante in that order, but my hard headed *** went with the cheap converter. I paid the price. My converter slipped constantly, locked and unlocked and acted crazy all the time. I have had ZERO problems with this Yank 2800
Cajun
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Originally Posted by ccajun4real
I hate TCI. I burnt a tranny up messing with a TCI SSF 3500. Everyone told me that I should use Yank, PI, or Vigilante in that order, but my hard headed *** went with the cheap converter. I paid the price. My converter slipped constantly, locked and unlocked and acted crazy all the time. I have had ZERO problems with this Yank 2800
Cajun
Cajun
Originally Posted by 99PewterZ28
I run the TCI SSF3500 in my car with 83,000mi. Never had one problem with locking & unlocking. Its only been in the car for around 20,000 miles & about 100 nitrous passes in a stock trany! Maybe you just got a bad one, or a poor tune..
