absz Posted September 11, 2006 Share Posted September 11, 2006 Right i've been in touch with a local company to have my standard torque converter stall speed changed to 3800, but they tell me as the slipping of the converter is high it will send the box into limp mode. so my question is Has anyone fitted a high stall torque converter to a standard box and are there any mods that require doing apart from oil coolers. Quote Link to comment Share on other sites More sharing options...
Robert Posted September 11, 2006 Share Posted September 11, 2006 Im sure Justin is running a high stall on the stock box, its fine to do i believe. Cooling is important as ever though. Quote Link to comment Share on other sites More sharing options...
Jake Posted September 11, 2006 Share Posted September 11, 2006 loads of people. Dude, Justin, CJ, Charlie, MonkeyMark etc etc For drag racing a high stall TC makes the biggest difference of any mods you can do. Quote Link to comment Share on other sites More sharing options...
absz Posted September 11, 2006 Author Share Posted September 11, 2006 cheers guys:) Quote Link to comment Share on other sites More sharing options...
veilsideTT Posted September 11, 2006 Share Posted September 11, 2006 Me too, 3800 TC on stock box pushing 600hp through it daily Get a trans cooler and a fan though dude! Quote Link to comment Share on other sites More sharing options...
michael Posted September 11, 2006 Share Posted September 11, 2006 What sort of money are they asking for the conversion? Just wondering if it works out cheaper that buying in from the US. Quote Link to comment Share on other sites More sharing options...
MONKEYmark Posted September 11, 2006 Share Posted September 11, 2006 i thought you could not take a stock stall too high. Quote Link to comment Share on other sites More sharing options...
terribleturner Posted September 12, 2006 Share Posted September 12, 2006 PM sent Quote Link to comment Share on other sites More sharing options...
absz Posted September 12, 2006 Author Share Posted September 12, 2006 i thought you could not take a stock stall too high. i know that the standard converter is stripped out and the internals are changed in it. i'm sure the hi-stall converters you buy have the same thing done to them, as they are sold on a exchange basis only. Quote Link to comment Share on other sites More sharing options...
b_have Posted September 12, 2006 Share Posted September 12, 2006 i know that the standard converter is stripped out and the internals are changed in it. i'm sure the hi-stall converters you buy have the same thing done to them, as they are sold on a exchange basis only. No, they are new units. (smaller and lighter than oem.) Quote Link to comment Share on other sites More sharing options...
veilsideTT Posted September 12, 2006 Share Posted September 12, 2006 my local shop stopped re-flashing stock convertors as they could never garrantee the stall speed with them. I was told that anything over 3000rpm on a stock convertor was too much! Worth a go for £100 though (well, thats what my guy used to charge anyway) Quote Link to comment Share on other sites More sharing options...
absz Posted September 12, 2006 Author Share Posted September 12, 2006 my local shop stopped re-flashing stock convertors as they could never garrantee the stall speed with them. I was told that anything over 3000rpm on a stock convertor was too much! Worth a go for £100 though (well, thats what my guy used to charge anyway) well i,m confused now:blink: its £350+vat to have the standard torque converter stall speed change.which i thought was a good price. i was under the impression that it will be as strong as a aftermarket converter. Quote Link to comment Share on other sites More sharing options...
veilsideTT Posted September 12, 2006 Share Posted September 12, 2006 I was told it would not be stronger than an aftermarket unit if i had it re-flashed. If anything, more liable to break! Dude, your going to pay £410 for a stock re-flashed convertor. My suggestion is, sell the stock convertor (bout 50-75 sniffs) Speak to martin at MKIVSTORE. he was doing PI convertors for just over 550 sniffs all in i think. If its your first purchase you can also get 5% off. So thats £520 for a new convertor and possibly £75 for you old one! Do the math Quote Link to comment Share on other sites More sharing options...
b_have Posted September 12, 2006 Share Posted September 12, 2006 Spot on, I bought mine from MKIVSTORE, almost half the price they used to be. Quote Link to comment Share on other sites More sharing options...
ardasaliah Posted September 12, 2006 Share Posted September 12, 2006 Sorry guys- can some explain what stall speed is please as I am very thick. ArdZ Quote Link to comment Share on other sites More sharing options...
veilsideTT Posted September 12, 2006 Share Posted September 12, 2006 If you put the brakes on and hit the throttle the revs will rise up to a point where it stops (this is not advisable for long periods). This is called the stall speed. I,e. if it revs to 3800 then its a 3800 stall Basically its like the clutch bite of the torque converter. Us single guys go for higher stalls of around 3800-4000 to get into boost immediately. There just as useful on twin setups also. Stock stall is around 2500 i think Quote Link to comment Share on other sites More sharing options...
ardasaliah Posted September 12, 2006 Share Posted September 12, 2006 If you put the brakes on and hit the throttle the revs will rise up to a point where it stops (this is not advisable for long periods). This is called the stall speed. I,e. if it revs to 3800 then its a 3800 stall Basically its like the clutch bite of the torque converter. Us single guys go for higher stalls of around 3800-4000 to get into boost immediately. There just as useful on twin setups also. Stock stall is around 2500 i think I see- So what sort of damage can be done from doing this on a stock box? Quote Link to comment Share on other sites More sharing options...
veilsideTT Posted September 12, 2006 Share Posted September 12, 2006 If you brake boost (stall up the TC) like i mentioned for too long (like 4-5 seconds) you will rapidly heat up your trans fluid and boil it. in turn it will become burnt and start screwing up your gearbox. If you go high stall then you will still be heating up the fluid due to the TC slipping all the time whilst driving. Most high stall users, like myself, have another aftermarket trans cooler installed and a fan to cool the fluid. Quote Link to comment Share on other sites More sharing options...
kosmic Posted September 12, 2006 Share Posted September 12, 2006 How driveable are these hi-stalls for day to day driving? Im guessing they need a lot of revs before they "bite"? Quote Link to comment Share on other sites More sharing options...
veilsideTT Posted September 12, 2006 Share Posted September 12, 2006 Not too bad, i use my car daily in the summer. At first i hated it and was ready to rip it out. They do need a few more revs to get the car moving obviously. Got used to it now and wouldn't go back to a stock TC. I found my single too laggy with the stock TC and sometimes it left me with my foot planted at the lights and going nowhere! I think you need to weight up the pros and cons against your "own" specific needs and cars spec. and also what you want to get out of your car. If you want to drag race and want good times (single or auto) then high stall is the only way to go. If your not bothered about getting into positive boost fast from the line then stick with the stock TC. Quote Link to comment Share on other sites More sharing options...
terribleturner Posted September 12, 2006 Share Posted September 12, 2006 Sandeep, when are you free next?? If your bored tomorrow....... I have a PI 3800tc which i bought off supraforums brand new and delivered for less than £400. For a guide price there's a place in the US who will take your stock TC and convert it to the speed you want for $489 without shipping. I do have a question for other HS users though.......Do you all run with lock up switches?? And do you find it only changes to top gear rarely?? Quote Link to comment Share on other sites More sharing options...
veilsideTT Posted September 12, 2006 Share Posted September 12, 2006 my car will lock up on its own and will go into top gear at the right speeds. I have to be quite light on the throttle to get it to do either. I'm hooking up a lock up switch this week actually as it will benefit me loads for just light driving Quote Link to comment Share on other sites More sharing options...
terribleturner Posted September 12, 2006 Share Posted September 12, 2006 I'm hooking up a lock up switch this week actually as it will benefit me loads for just light driving Don't surpose you wanna slide the instructions my way? It goes in but pop's out. I don't mind it tbh but think my wallet would be slightly heavier if i could only get it to change and stay for a bit longer Quote Link to comment Share on other sites More sharing options...
veilsideTT Posted September 12, 2006 Share Posted September 12, 2006 there ya go bro Lock Up Switch Instructions Quote Link to comment Share on other sites More sharing options...
terribleturner Posted September 12, 2006 Share Posted September 12, 2006 Cool, may be my weekend work Quote Link to comment Share on other sites More sharing options...
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