johnr Posted July 20, 2012 Share Posted July 20, 2012 i have heard you can convert your 4 speed ax4 into a 5 speed and roomer has it most of the parts are already inside the 4 speed gearbox. is there ant truth to this and if so how hard is it to do, or am i just hopeing for a mirical :dunno: Link to comment Share on other sites More sharing options...
Geonovast Posted July 20, 2012 Share Posted July 20, 2012 Yes you can, I've done it. What do you have at your disposal? Link to comment Share on other sites More sharing options...
carnuck Posted July 20, 2012 Share Posted July 20, 2012 A: Remove AX4 speed. B: Install AX5 speed. Easy Peasy! C: Later wish you'd found a Dakota with 2.5L to get the AX-15 bell and clutch from for an upgrade! Link to comment Share on other sites More sharing options...
mvusse Posted July 20, 2012 Share Posted July 20, 2012 Easiest way to get the parts to turn an AX4 into an AX5 would be to get an AX5. But then why not swap the entire AX5 into the truck? You will need the 5th gear shift rail, gears, bearings shift collar and synchro. Also a different reverse shift rail, detent spring and ball (plus possibly other ones between rails, can't remember) and I think also the shift bracket. I just dismantled a partially good AX4 and a partially good AX5 a couple weeks ago to make one good AX5. Put the 5th gear shift collar on backwards so it just barely engages and pops out when coasting, but I've had enough to last me a while. Maybe next year some time I will feel like taking it out again to fix that. But that was my first time working on a manual transmission and there were too many parts for me to have remembered everything. Link to comment Share on other sites More sharing options...
johnr Posted July 20, 2012 Author Share Posted July 20, 2012 Yes you can, I've done it. What do you have at your disposal? right now i have the ax4 thats in the truck. but after reading mvusse's post i think thats more than i care to get into without having an extra one on the bench. Link to comment Share on other sites More sharing options...
Geonovast Posted July 20, 2012 Share Posted July 20, 2012 Ah, I was assuming you either had a toasted AX-5 sitting around, or a 2wd AX-5 or something. Yeah, it's not something worth part hunting for. You're better off finding an AX-5 to throw in and keeping the AX-4 around as a spare. Link to comment Share on other sites More sharing options...
johnr Posted July 21, 2012 Author Share Posted July 21, 2012 thanks all for the feed back Link to comment Share on other sites More sharing options...
carnuck Posted July 22, 2012 Share Posted July 22, 2012 AX5 is in a number of other Jeeps too. XJs, YJs and a few Eagles ('83-85 with 4 cyl only) Link to comment Share on other sites More sharing options...
johnr Posted July 22, 2012 Author Share Posted July 22, 2012 AX5 is in a number of other Jeeps too. XJs, YJs and a few Eagles ('83-85 with 4 cyl only)I'm overdue for a trip to the junk yard. i think its been 6 months :clapping: Link to comment Share on other sites More sharing options...
mvusse Posted July 22, 2012 Share Posted July 22, 2012 I know the AX5 out of YJs clock the transfer case higher. Enough so that the floor needs to be modified for the double cardan CV joint to clear in a stock MJ. Depending on amount of lift, it might work without mods in a lifted MJ. Link to comment Share on other sites More sharing options...
Geonovast Posted July 22, 2012 Share Posted July 22, 2012 Depending on his level of ambition, it wouldn't be hard to swap his current AX-4 rear case onto the AX-5. I believe the only difference in the AX-4/5 rear case is the clip/spring combo in the AX-5 to prevent going into reverse from 5th, but that should move over just fine. Link to comment Share on other sites More sharing options...
mvusse Posted July 22, 2012 Share Posted July 22, 2012 Actually, I believe all that is in the mid plate. Link to comment Share on other sites More sharing options...
Geonovast Posted July 22, 2012 Share Posted July 22, 2012 Nope, midplates are all the same. The clocking difference is where the 6 holes are drilled in the round flange on the very back for mounting the T-case. Link to comment Share on other sites More sharing options...
mvusse Posted July 23, 2012 Share Posted July 23, 2012 I mean the "clip spring combo in the AX-5 to prevent going into reverse from 5th". I believe that is all in the mid plate. Link to comment Share on other sites More sharing options...
Geonovast Posted July 23, 2012 Share Posted July 23, 2012 Nope, it's actually a small clip and spring just inside the hole where the shifter bolts to. It's set up so the only way to go into reverse is by going to the right, and down. When you go to the right, and up, it pops the clip back up, so you have to bring the shifter back to the middle before going into reverse. Link to comment Share on other sites More sharing options...
mvusse Posted July 23, 2012 Share Posted July 23, 2012 Must be a design difference between years. My AX4 (out of an unknown year YJ) I'm pretty sure what prevented the shifter from going up when in the rightmost position was in the design of the reverse shift rail. That is why I had to change over the reverse shift rail from the AX5 when moving the 5th gear stuff over to the AX4 mid plate. Link to comment Share on other sites More sharing options...
Geonovast Posted July 23, 2012 Share Posted July 23, 2012 Must be a design difference between years. My AX4 (out of an unknown year YJ) I'm pretty sure what prevented the shifter from going up when in the rightmost position was in the design of the reverse shift rail. That is why I had to change over the reverse shift rail from the AX5 when moving the 5th gear stuff over to the AX4 mid plate. Oh, it is. I see now we're talking about two completely different things. You're talking about the trans preventing you from putting it into 5th when there is no 5th. I'm talking about the safety feature that prevents accidental shifting from 5th into "6th" on an AX-5. Link to comment Share on other sites More sharing options...
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