ok someone pelase explain how stall in converters works exactly ?

i cant think right for some reason and i cant figure out for sure if you lose any RPM( that you lose in higher stall) completely all the way through the RPM range,

lets say you are cruising at x amount of rpm at a given cruising speed and if you put in a higher stall converter, now do you have higher x amount of rpm at the same given cruise speed ?

im thinking that you do..


higher than stock stall speed= higher rpm across the whole "board" ?

just want to make sure., se eif im thinkign correctly ?


thanks

 

there is no such thing as a stall converter, all converters have some stall
changing stall speed will not effect the engines rpm limit, if i'm getting your question. if your engine spins to 5200 more or less stall will not change that

 

From what i have heard you can cruise around at 1500 RPM on a stock or 3000 stall.

The only difference is when you get on it, the TC will allow your engine to get up in its powerband right away without having to wait for the car to speed up.

 

Very light throttle will allow even the wildest converter to feel close to stock. Medium throttle input acts similar to a manual transmission car slipping the clutch. Full throttle acts similar to a manual transmission car dumping the clutch at whatever RPM the stall is rated at.

I have a 3800RPM stall TC in my 00TA, and medium throttle from a stop will spin the engine to around 3500RPM and hold it there until throttle input changes or the drivetrain requires higher engine speed. Full throttle will flash the converter to 3900RPM and hold it until the drivetrain requires higher engine speeds.

And its not only the stall rating of a torque converter that's so attractive, is the STR, or Stall Torque Ratio. Most stock converters have around a 1.8 to 1.9 STR. Quality aftermarket converters have anywhere from 2.2 to 2.5 like the converter in my 00TA. STR is basically torque multiplication. For example: An engine making 300 ft/lbs of torque at the flexplate would make 570 ft/lbs on a stock converter (1.9 STR) at the transmission input shaft, while a an aftermarket converter could make 750 or more (2.5) STR with the same engine.

And even with this loose 3800RPM stall TC in my car, I can cruise at 60MPH at only 1600RPM because it is a lockup converter.

Edit: Many people feel that the car becomes less responsive after installing a higher stall. The throttle input IS less responsive, as the torque converter's higher stall tends to "absorb" some of the engines torque. However, full throttle feels similar to a nitrous shot (more torque), and you'll soon become numb to the slushy throttle input. A quality torque converter is the second best SOTP mod you can make, second only to a power adder.