AX-5 to AX-15

[coronakid]

hey guys. I have a 95 jeep yj 2.5l I am having problems with the ax-5 tranny and was wondering. If I put a ax-15 into my jeep from another jeep or DC vehicle will it work? I mean as far as gears and correct ratio.:confused:

[FrenchChili]

Here's a link for the ax-15 specs:

http://www.off-road.com/jeep/tech/trans/ax15.html

"deleted comment/edit"


My ax15 has the syncros dying, well I think that's what it is:rolleyes: which if I remember right is typical.


EDIT!!!: Ok, I found more info on swaps and the bell housings are different so I don't know but maybe there is an aftermarket part on the market to make it compatible.


Although this thread is for a peugeot tran swap, the ax5/ax15 is mentioned somewhere in the middle of the posts. There is some valuable info check it out: http://www.snort4x4.com/forum/showthread.php?threadid=6097 (http://www.snort4x4.com/forum/showthread.php?threadid=6097)

[coronakid]

I have found a way to make the tranny do in my only consern is if the gear ratios are going to mess up everything:confused:

[FrenchChili]

No. Let's do a comparison:
Ax-5
1st 2nd 3rd 4th 5th Rev
3.93 2.33 1.45 1.00 0.85 4.74
Ax-15
1st 2nd 3rd 4th 5th Rev
3.83 2.33 1.44 1.00 0.79 4.22

the ax15's 1st gear is only slightly longer by .1, I doubt you'll feel the difference. 3rd, .01 difference, which really you won't feel anything.
when I mean longer think about it like your axle ratios. If you have 3.07s it means it takes 3.07 rotations of the driveshaft for one rotation of the tire. 3.73s, 3.73 turns of the driveshaft for one rotation of the tire. Basically, the ax15's 1st gear has slightly more of a top speed...just a tad.

So lets continue, look at the transmissions' final drive ratio and how close they are. ax5> 4.74 vs ax15>4.22...it's only about 10% difference (including reverse)... you'll be just fine.


Just make sure you get the right ax15, they made two types of it, just different size spline, thinner for older years, thicker for newer jeeps.

[SHNIPE]

LOl the final drive isnt 4.74 or 4.22 :P thats the rev gear ratio :P Silly french

Final answer: Shouldnt be an issue. do the swap

[1eagle]

He is still thinking about that waitress (Kristen) from Hooters:D I think she was checking him out. It must of been the hair:eek:

[coronakid]

thanks guys I will probaly cannabilize a tranny off a newer dakota{ the bell housing fits right up to a 2.5l it should be easy.

[coronakid]

the problem I am having with the AX-5 is the 5th gear.:( ... it doesn't have one any more:eek:

[FrenchChili]

LOl the final drive isnt 4.74 or 4.22 :P thats the rev gear ratio :P Silly french

Final answer: Shouldnt be an issue. do the swap


:D silly me :rolleyes: I swear it was only a misread :D The offset gave me that impression,,,oups!!! Thanks for clearing that up:eek:


Yea, my mind is somewhere else:D

[My1stJeep]

So did you get the girls number or what? When is your first date? When you got home did the parents approve the the girl who was flirting with you?

As for the 5th gear issue, going to the AX 15 will not gain you back 5th gear if your issue is a ratio problem. It will be stronger, so they say, so it might help keep you from having weak tranny issues. Have you checked a spline count? I know the AX15 in the Jeeps have a higher spline count than the AX5.

[FrenchChili]

no:eek:

but I picked up 2 girl's #s on Saturday night :D . I remembered when I was looking for a # on my phone :rolleyes: ya...crazy night I tell ya :D

[muddyjeep]

The output shaft does not have same spline count. Transfercase will not bolt up.

[coronakid]

So did you get the girls number or what? When is your first date? When you got home did the parents approve the the girl who was flirting with you?

As for the 5th gear issue, going to the AX 15 will not gain you back 5th gear if your issue is a ratio problem. It will be stronger, so they say, so it might help keep you from having weak tranny issues. Have you checked a spline count? I know the AX15 in the Jeeps have a higher spline count than the AX5.

the ratio is not the problem.. the 5th gear BROKE:eek: I mean I was driving down the free way and It just crapped out. If I put the thing in 5th it acts just like its in neutral.

[rvisokey]

The AX5 extends 0.5" past the bell housing face and the AX15 is flush with the face. So you'll need to use a different pilot bearing.

Also, the AX15 is about 2-3" longer than the AX5 so you'll have to do some driveshaft modifications.

[FrenchChili]

mmm...are there any aftermarket parts to make the ax5 a medium duty transmission as well as mounting it to a 4.0L? the 2-3" could help on driveshaft angle.

[rvisokey]

mmm...are there any aftermarket parts to make the ax5 a medium duty transmission as well as mounting it to a 4.0L? the 2-3" could help on driveshaft angle.

It 2-3" longer... your rear driveshaft would be shorter increasing the angle.

[coronakid]

damn this is just not worth it. I guess I will just rebuild the AX-5 i mean it has lasted 115,000 miles so I guess if I rebuild it it'll last another 115,000 right?:o

[Tom Schenk]

mmm...are there any aftermarket parts to make the ax5 a medium duty transmission as well as mounting it to a 4.0L? the 2-3" could help on driveshaft angle.

The ax-5 would not survive 100ft behind a 4.0L, upgraded or not. That would be like running a D35 for the ground clearance.:rolleyes:

[FrenchChili]

damn this is just not worth it. I guess I will just rebuild the AX-5 i mean it has lasted 115,000 miles so I guess if I rebuild it it'll last another 115,000 right?:o


I say don't rebuild the ax5! Might as well do the ax15 swap; and even if it might seem like hard work, you'll be glad you did it.

[FrenchChili]

It 2-3" longer... your rear driveshaft would be shorter increasing the angle.

the ax5 is shorter, I MEANT using the AX5 'cause it's shorter, but apparently upgraded or not it's a live grenade:rolleyes:

[coronakid]

yeah I think they use recycled beer cans to make the entire tranny. I will do the swap but will probably have a buddy figure out the hard stuff{ thats what friends are for right?} and just buy the right parts:D

[Tom Schenk]

yeah I think they use recycled beer cans to make the entire tranny. I will do the swap but will probably have a buddy figure out the hard stuff{ thats what friends are for right?} and just buy the right parts:D
Did you check to see if Advanced Adaptors makes a bellhousing that will mate the ax-15 to your 2.5? That will solve the pilot bearing issue. All you'll need then is to swap your NP231 with a 4.0 type 231 so the input/output will match up. Or, if you decide to replace the ax5, call Nacho at AMC Salvage in Glendale. He has good prices on rebuilt ax5's, just drop off yours and take home one of his.

[coronakid]

the dodge dakota has a 2.5l and a ax15 so I was jsut going to get one from a dakota:D

[Tom Schenk]

well there you go! :D
take pics and post up a write-up in the diy forum. good luck