Jump to content

What diameter on pre/post '92 ax15?

Recommended Posts

Pete stated on an earlier ax15 post by Jimoshel to check the diameter of the spindle to tell the 89-91 vs. 92+. I just picked up a 2wd ax15 with internal slave but don't know if I need to buy an appropriate pilot bushing before taking it to the tranny shop. If anyone knows what exactly I should measure, please let me know. I posted some pics, so this might help. There were #s on a metal tag on top but after three rounds of GUNKing it, I can no longer read the numbers.

Link to comment
Share on other sites

Ok so I literally just went through this and had to have a buddy use his lathe to turn down a bushing for me.


If the transmissions pilot shaft area (tip of the shaft) measures around .590-.560 then you have a 91 or OLDER AX-15. Now the question is: what year engine are you running? 92+ like I did and your crank should have a small pilot hole of 1.000. 91 and OLDER 4.0 should be 1.054. Doesn't seem like much of a difference but it is. If you have a .75 pilot on your transmission you have a 92+ AX-15. Depending on what direction you are going with the swap either the pilot is commercially available or you will need a custom job like I had made. I will save you the trouble of even trying the advance adapters or novak pilot bushings unless you specifically take the measurements they give you and they match what I have given you/you have measured. If you have an internal slave that doesn't mean much because you could have a 91 or 92 and that is on the cusp of the different transmission pilot and engine crank pilot hole measurements. At the end of the day its not a difficult swap but depending on your application you may need a custom bushing made.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...