95 SmokinGreen
New member
- Joined
- May 22, 2007
- Messages
- 74
First gear for me using the ats box.
1st gear running mikes bolt together converter works very well
dont mean to derail guys but question here for ya..would i benefit at all with a lock up switch even though i have a tight t/q say 91%...thanks guys...
Just wanted to see when most people are locking the convertors?
Anyone lock it up off the line? When I do my trans swap, was thinking of using a momentary contact on the brake pedal so that when the brake is released the convertor locks, right off the line.
This is where the argument is bound to happen, but... Locking the converter when there is a large difference between the engine rpm, and the input shaft rpm, will put a large amount of stress on parts. Doing that lockup in a higher gear, will increase the stress. For an analogy (probably a really bad one), but if you strike something with a hammer that is hard to move, it will apply more force, then if you hit somthing with a hammer, that is easy to move. If you are in first gear then the input shaft has a mechanical advantage over the output shaft. When the converter locks up, it is easier for the input shaft to accelerate. In 4th it is much harder for the input shaft to accelerate.
If you lockup the converter too close to the shift, then the lockup is trying to accelerate the output shaft, as well as the shift is trying to accelerate it. And at least one is probably happening close to peak torque in the engine.
Lock it, let the engine recover, and then shift it. Or visa-versa.
Paul
:umno::badidea: ok, back in the day.........which has been a long time for me, but when we first built the truck we set the converter to lock up as soon as my foot came off the brake. I am pretty sure i wired it to the brake switch. Anyway, we were probably only around 1100 horsepower at the time and lets just say all of the planetaries exploded into shrapnel when we did this, we never even moved 5 feet. I would advise against it but at the same time if you could make it work i believe it could make for some fast passes. It's been a long time ago since i tried this, maybe 8 years. Anyway, carry on.
On my 47RH I have the TPV fixed wide open. This isn't recommended for daily drivers. But I have driven it on the street with no ill effects.