Changing over to a 5spd

**rogerv** · 04-03-2012, 07:07 PM

Ok folks, my 89 TF999 is now a 2 speed (lost 2nd gear) are there very many mods needed to switch to an ax-15. Garage and equip are not a problem, just haven't done this swap on a jeep

**Que89YJ** · 04-04-2012, 07:31 AM

Strait swap. Remember to jumper the nuetral saftey switch.

**rogerv** · 06-02-2012, 02:54 PM

Just another quick question, should the input of the tranny have any play at all, the one I have has just a little. The last time I did this swap was with a sm465 on a full size chevy, and that's been a while ago

**Opihi59** · 06-02-2012, 05:03 PM

Quote:

Originally Posted by rogerv

Just another quick question, should the input of the tranny have any play at all, the one I have has just a little. The last time I did this swap was with a sm465 on a full size chevy, and that's been a while ago

If you're talking about wiggle of the input shaft of the manual transmission "while it is sitting on the bench" then that is to be expected. The component that stabilizes the front part of the input shaft is the pilot bearing in the crank.

Tell me more about what trans you're putting in, etc. Is this the 0.750" pilot or the smaller version that I can't ever remember but think it's 0.560". Are you going with a external slave version (this is recommended, very strongly) or the internal slave version from '93 and earlier (booooo...)

I would like to hear a bit about your plans if you don't mind.

Karma · 06-02-2012, 05:48 PM

Quote:

Originally Posted by Opihi59

If you're talking about wiggle of the input shaft of the manual transmission "while it is sitting on the bench" then that is to be expected. The component that stabilizes the front part of the input shaft is the pilot bearing in the crank.

Tell me more about what trans you're putting in, etc. Is this the 0.750" pilot or the smaller version that I can't ever remember but think it's 0.560". Are you going with a external slave version (this is recommended, very strongly) or the internal slave version from '93 and earlier (booooo...)

I would like to hear a bit about your plans if you don't mind.

HI,
X2 on the external slave. Internal slave-boo 2. Jeep had a terrible idea here and you might as well get rid of it.

Sparky

**rogerv** · 06-02-2012, 06:12 PM

Coming out is the TF 999, going in is a ax- 15 from a 90. Right now as it sits on the bench it has the internal slave, but it will have the external when I install it. My sons 93 has the internal- NO thanks- don't want that headache. I'll have to measure the pilot and get back to you on that. The bonus is the 231 comes attached to it, along with all of the pedals and brackets. All of this for $150.00

**Opihi59** · 06-02-2012, 06:32 PM

You suck. 150 bones. Yeah, you suck. Good on ya mate on the ext slave. Please strongly consider the one piece pre bled clutch master/hose/slave unit with this swap. I have a writeup in the FAQ on the internal slave, and Max added in a ton of photos and part numbers.
If you have the time and a good digital cam, please consider doing a photo write-up on the start to finish process and I bet it'll end up in the FAQ on this swap. AX15 is a good trans and a very straight forward chunk of steel. Let us know the blow-by-blow and we'll help you thru the tight spots.

**Mean Max** · 06-02-2012, 06:45 PM

Quote:

Originally Posted by Opihi59

If you're talking about wiggle of the input shaft of the manual transmission "while it is sitting on the bench" then that is to be expected. The component that stabilizes the front part of the input shaft is the pilot bearing in the crank.

Tell me more about what trans you're putting in, etc. Is this the 0.750" pilot or the smaller version that I can't ever remember but think it's 0.560". Are you going with a external slave version (this is recommended, very strongly) or the internal slave version from '93 and earlier (booooo...)

I would like to hear a bit about your plans if you don't mind.

Correct, as usual!

His "donor" AX-15 from a '90 will have a 0.590" input shaft tip.

Is it from a '90 YJ?

Max

**rogerv** · 06-02-2012, 06:47 PM

I'll check out the FAQ section, thanks for the heads up. I will take lots of pics, either with my iPhone or the wife's digital camera. If I can make this swap easier for someone else then it will be worth the extra time. My work schedule is 2 weeks on and 2 weeks off, so time is not a factor

**rogerv** · 06-02-2012, 06:48 PM

Yes max it's from a yj

**Mean Max** · 06-02-2012, 07:05 PM

Quote:

Originally Posted by rogerv

Yes max it's from a yj

Good deal. Otherwise, the clocking of the transfer case would need to be addressed.

Max

**rogerv** · 06-02-2012, 07:47 PM

Max- there is a 231 already attached to the tranny so I won't have to worry about it. I'll have to see which t-case is the better one, mine or the donor. When we agreed on the deal I asked about separating the two and his response was "nope the t-case goes with it.

**Mean Max** · 06-02-2012, 08:02 PM

Quote:

Originally Posted by rogerv

Max- there is a 231 already attached to the tranny so I won't have to worry about it. I'll have to see which t-case is the better one, mine or the donor. When we agreed on the deal I asked about separating the two and his response was "nope the t-case goes with it.

The clocking of the transfer case has nothing to do with the transfer case, and everything to do with the transmission.

YJ transfer cases are clocked at 13 degrees, while XJ transfer cases are clocked at 23 degrees. This is accomplished by the position of the 6 mounting holes in the rear flange of the transmission.

Max

**rogerv** · 06-02-2012, 08:16 PM

I see, that's why you asked if my donor was from a yj, I understand now. See you learn something new everyday- life is good !

**Mean Max** · 06-02-2012, 08:29 PM

Quote:

Originally Posted by rogerv

I see, that's why you asked if my donor was from a yj, I understand now. See you learn something new everyday- life is good !

One of the best aspects of this site!

Max