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high stall torque converters 

 

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 Post subject: high stall torque converters
Posted: Mon Nov 08, 2004 7:27 pm 
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im looking to get a high stall in a coupla weeks but i have no idea what stall i should get... i really wouldnt mind a 3500 but im not to sure how the auto will take to it. any ideas? oh and what is the stocker stall rate? like 1600???

e6

 

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Posted: Mon Nov 08, 2004 8:03 pm 
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A thing that Ive heard but never had the experience of is the ECU going into limp home mode with high stall converters. The BTR is apparantly tough enough to take it but if its always gunna go into limp home mode, it might be more of a pain in the a*** than what its worth. Surely someone else on here is running a highstall converter, and they can give you a better ideaof this and whether or not this is just a load of B/S

 

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Posted: Mon Nov 08, 2004 8:09 pm 
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I've heard that too, but I don't see the reason why they should go into limp home mode.
A 3500 stall would be a b**ch for a daily driver I reckon, maybe try 3000?

 

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Posted: Mon Nov 08, 2004 8:12 pm 
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Na I dont think so cause your standard stallie is 1800ish and even when you put into drive you still have enough converter lag to get it moving slowly, so Im assuming that around 1000rpm with a 3500 stallie would be similar to potter in and out of parking spots. Keeping in mind that you should get one with a lock up option like the standard one so that it doesnt affect you cruise rpm.

 

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Posted: Mon Nov 08, 2004 8:17 pm 
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I'm really not sure to tell you the truth, but I would have thought a 3500 stally would transfer f**k all torque to the gearbox until around 2500rpm at least - might make the car a little jumpy! :D

 

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Posted: Mon Nov 08, 2004 8:25 pm 
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Hmmmmm...............fun. I really dont think stallies are as bad as people think, its just that people who have them like jumping on the throttle cause its fun, and think about it, if you didnt want the thing to jump you wouldnt have fitted the stallie in the first place. Just control the right foot and it will be allright, like any form of mod really

 

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Posted: Mon Nov 08, 2004 8:29 pm 
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Hell yea, I'd want one if I wasn't going manual - probly something more like a 2500 though.
Be very interesting to see what people's experiences are with them, you don't really hear of many people with them in the BTR though do you?

 

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Posted: Mon Nov 08, 2004 8:33 pm 
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Yeah which kinda makes me wonder if the limp home mode myth is actually true. Who knows but, cause the humble E series falcon hasnt recieved the respect it deserves up untill recently

 

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Posted: Mon Nov 08, 2004 8:38 pm 
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3.9:1 LSD, 3500 stally and Nice Firm Shift kit would be f**k fast though.
Who knows, if anyone can tell us that it DEFINATELY WONT go into limp home mode I may reconsider it over a manual conversion...

Oh, by the way evil6 - get a huge transmission cooler if you do it. A high stall will generate a lot of heat.

 

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Posted: Mon Nov 08, 2004 8:39 pm 
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ive been wonderin about this for a while, but what does a high stall convertor actually do (or any stall convertor for that matter) :?:

 

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Posted: Mon Nov 08, 2004 8:51 pm 
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The basic nuts and bolts of it is that it substitutes for a clutch as it is a hydrolic link between your box and motor. A lockup converter has a clutch in it as well as the hydrolic turbine,stator and impellor. The clutch is engaged when the computer senses that the car is at cruising speed to save fuel. Torque converters also have the ability to have an infinite number of torque outputs generally up to about twice that of the motor, but they come with a lower output rpm, hence the taller ratios of the auto box. The stall speed is the point where the difference between the out put shaft and the input through the coverter housing can be no higher ie 1800rpm difference or 3500rpm difference. higher stall converters are used to get your motor up to its power band when you take off, a bit like revvinng your engine harder in a manual before stepping off the clutch. Thats probably about all you need to know about em.

 

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Posted: Mon Nov 08, 2004 10:18 pm 
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so whats this limp mode thing? would i need to get the chip redone? i spose 3500 would be a bit high maybe 2800 or 3000, i need someone with a high stall to tell me a little more, i dont wana dump it in and then find out its s**t house.

 

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Posted: Mon Nov 08, 2004 10:30 pm 
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thanks for the tip voxace, i might go price up a cooler first

e6

 

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Posted: Mon Nov 08, 2004 10:43 pm 
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The limp home problem is true, seen it on a number of Falcons. Max stall they cope with is around 2500rpm but even then it throws some cars into limp home mode. Honestly though anything higher will probably result in slower acceleration times anyway. The Falcons have great low down torque figures, you don't really want to get rid of half of your power curve with a high stall. I have a 2500rpm TCI convertor in mine and there is a big improvement mainly due to the fact that the stock convertor is designed to be smooth, the aftermarket ones are much more severe. I have also been in a lot of high stall (3500rpm and above) cars and they aren't generally very nice to drive and fuel economy goes to hell. There is a formula to work out what stall you need, it's not just throw in a larger one and thats it. Any trans place should be able to work it out from cam specs and if possible a dyno graph. My stall was matched to my cam and where boost comes in.
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Posted: Mon Nov 08, 2004 10:57 pm 
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Can you give us more details about this 2500rpm TCI convertor, where from, price, how much improvement there was?
Thanks.

 

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