42RH advice needed

[Clelan]

I am in the same boat as you. I see little or no RPM drop when LU kicks on.

Cley

 

[str12-340]

It's just a lock up of the converter - don't expect more than 1-200 rpm drop. The OD should be the big drop.
I set mine up to actuate OD and LU manually with a coupe buttons and I love it! I just hit about 8000 miles on my 42 RH with a fresh rebuilt unit...

 

[AJ/FormS]

What is called the "forward" clutch isn't the front most one as mounted in the trans, that would be the high,/reverse. The "forward" clutch which is engaged in all forward driving gears is actually the rearward mounted one in position within the case. There are 2 clutch packs in that overdrive unit, I believe one is engaged all the time you're moving forward as well. I know that if one of the clutch paying the OD is bad you won't have reverse.

Yeah but we call the clutch that generates forward motion, the forward clutch, every body I know does it; and we don't care that Mopar called it something else. They started this mess.

 

[Headintheclouds]

It's just a lock up of the converter - don't expect more than 1-200 rpm drop. The OD should be the big drop.
I set mine up to actuate OD and LU manually with a coupe buttons and I love it! I just hit about 8000 miles on my 42 RH with a fresh rebuilt unit...

Good to know. I saw a Youtube video of a Jeep suggesting lockup was like a 5th gear. Perhaps it is if you have excess slip in the TC.

What about overdrive engagement? How quickly / hard should it come in and should it stay at lower RPM when it switches out until the gas pedal is pushed again?