Hey there guys,

Im just interested in knowing a little more about stall converters.

All I seem to know or think I know is that they dont let your car take off unless you have a certain RPM so that you launch more quickly but im sure there is more to it then that.

Does the car still take off smothly for normal driving and what happens when you go under the rpm the stall converters been set at and you want to accelerate again? does it not allow you to drive until you hit the designated RPM or is it disabled once the car is moving?

Does anyone have some knowledge on how these thing work?

Hey there guys,

Im just interested in knowing a little more about stall converters.

All I seem to know or think I know is that they dont let your car take off unless you have a certain RPM so that you launch more quickly but im sure there is more to it then that.

Does the car still take off smothly for normal driving and what happens when you go under the rpm the stall converters been set at and you want to accelerate again? does it not allow you to drive until you hit the designated RPM or is it disabled once the car is moving?

Does anyone have some knowledge on how these thing work?

Stall converters are used more for drag racing, as in you reach a certain rev limit....let say 3000rpm hold it there and then let go. It launches like a rocket.

As for driving it daily and normal it will take off like a normal car.

Hey there guys,

Im just interested in knowing a little more about stall converters.

All I seem to know or think I know is that they dont let your car take off unless you have a certain RPM so that you launch more quickly but im sure there is more to it then that.

Does the car still take off smothly for normal driving and what happens when you go under the rpm the stall converters been set at and you want to accelerate again? does it not allow you to drive until you hit the designated RPM or is it disabled once the car is moving?

Does anyone have some knowledge on how these thing work?

Stall converters are used more for drag racing, as in you reach a certain rev limit....let say 3000rpm hold it there and then let go. It launches like a rocket.

As for driving it daily and normal it will take off like a normal car.

Not too sure about that? I think if you have a higher stall then it takes more revs to engage movement? So it would not drive like a normal car as you would need more revs to get movement. Someone will have a concrete answer I'm sure.

It will drive like it has a slipping cluch. In normal driving.

The only thing is heat issue in the tranny as most city driving it will not be fuly engaged, slipping most of the time if you went to 3000rpm stall. Well that's how it was in the old days before lock up converters. Correct me if Im wrong. As for the moder lock up converters in the T's Um?

Hi-Stalls are an awesome addition to a streeter as well as a racer. They are built to a specific car & its gearing & ultimatley should lock-up around when the Cam/cams "Come in." Driving under the specified stall speed as Worpor stated will create a lot of heat but sound real cool. Depending on what you are looking for, but I wouldn't be changing the convertor in my T. With its stall speed of 2200rpm you can make plenty of power at those revs. Increasing your T's stall speed will just to it into a burnout monster & as much as I love burnouts the end result will have you pedalling the car off from the lights

I had a 4700rpm Allfast convertor (made in Perth) in my ZJ (which used to go to 7500rpm) & it was awesome the brake would hold it to 4700 for launches or if overtaking & giving it a bootful in whatever gear it would slip straight to 4700. When first fitted it would boil the oil so a second cooler was fitted in tandem with the first & presto (so the heat issue is easily rectified). On partial throttle it would engage what I called a second stall speed at almost 3000rpm which made it excellent for cruising, fantastic convertor.

Hope this helps,

Scotty

Here is an good explanation on how they work, with pictures and diagrams.

http://www.thrashercharged.com/tech_htm/to..._convertor.shtm

Exelent guys. Thanks for that

My gear box is getting ripped out soon and will be undergoing a mayor strengthening upgrade I might get the stall increased to 2500. I never knew we had a standard stall speed of 2200rpm!

Daniel.

I never knew we had a standard stall speed of 2200rpm!

Daniel.

Friggin hell Daniel. Try it out before you change it!!

Scotty

I would suggest a 2500rpm convertor is a waste of time considering that the standard convertor is 2200rpm. I would suggest getting at least a 3000rpm convertor, otherwise you are just wasting your money.

Personally I would go for a 3500rpm convertor and a beefed up auto transmission cooler to go along with it.

A T with a 3500 stally, that would be nice to see, I wonder how the driveline would handle the 450+ Nm when you really launch it from the lights. I have one in my XY and its all over the road :lol: