Upgrade parts on tranny?

Craig · #1 (**permalink**) 07-28-2005, 01:10 PM

Hey. My tranny died on me yesterday. If I get it rebuilt is there any internal parts I should have upgraded while it's all apart?

Bounty__Hunter · #2 (**permalink**) 07-28-2005, 01:26 PM

Auto or manual? What model tranny? What year jeep?

Craig · #3 (**permalink**) 07-28-2005, 01:39 PM

Ya, I guess that would help. It's a 93 YJ 4.0L standard. I'm not sure what model tranny it has.

GaryMB · #4 (**permalink**) 07-28-2005, 05:26 PM

If it's a manual, then you have an AX-15. It's a decent 5spd. I don't know much about upgrading the internals, though.

Bounty__Hunter · #5 (**permalink**) 07-28-2005, 05:51 PM

Best upgrade you could do is convert it to an external clutch slave using parts from a '94+ AX15.

Second best upgrade would be using Redline MT90 for fluid.

Make sure all the synchronizers are replaced during the rebuild

southtj · #6 (**permalink**) 07-28-2005, 06:26 PM

Quote:

Originally Posted by Bounty__Hunter

Second best upgrade would be using Redline MT90 for fluid.

Can the Redline be used in newer model TJs as well?

Bounty__Hunter · #7 (**permalink**) 07-28-2005, 09:29 PM

Is it an AX15? Then yes, most definately. Not sure about the NV trannies.

TwistedCopper · #8 (**permalink**) 07-28-2005, 09:31 PM

What fluid does you TJ call for South?

southtj · #9 (**permalink**) 07-28-2005, 10:12 PM

I'm not sure, I'll have to check. If I remember correctly, the last time I tried to look it up in the manual I couldn't find what they specified.

TwistedCopper · #10 (**permalink**) 07-28-2005, 10:13 PM

What year is your TJ?

Craig · #11 (**permalink**) 07-29-2005, 03:19 AM

The transmission guy my buddy contracts all his transmission work out to swears by the GM synchromesh fluid. He told me to use it in my tranny when it started grinding in second and reverse. I've been using it for 2 years now and haven't had a problem with it grinding since the day I started using it.

TwistedCopper · #12 (**permalink**) 07-29-2005, 10:11 AM

Well considering it's unlikely GM actually manufactures their own product, I'd bet it's Pennzoil in a Goodwrench bottle.

southtj · #13 (**permalink**) 07-29-2005, 10:45 AM

Quote:

Originally Posted by TwistedCopper

What year is your TJ?

Mine is an 04 and nothing on the window sticker or related paperwork tells me what kind of tranny it is. Just a 5 speed manual HD. Who knows where the owners manual is.

Sorry to hijack, Craig.

Bounty__Hunter · #14 (**permalink**) 07-30-2005, 12:07 PM

Maybe a NV3550 if it's a 4.0L and a NV1550 if it's the 2.4L (not 100% sure). Not a TJ buff.

The GM Synchromesh is good for the AisinWarner trannies (ax5 and ax15), just as the Penzoil Synchromesh. Not as good as Redline MT90 since the Redline is a full synthetic.