Quick question on BA10 to AX15 - clutch & pressure plate

[Skorpyo]

Finally got around to pulling the BA10 from my 89 with a 4.0 and was inspecting the clutch and pressure plate and the one that was on my donor AX15 is in nearly perfect shape. I know the flywheel has to stay on the 89 engine but can I use the clutch and pressure plate from the 95 AX15?

 

Looking at them they are nearly identical and the one from the donor XJ had been replaced less than 5K before I bought it. TIA,

 

Tim

[87MJTIM]

I did the swap in '15 from the BA10 to ext-AX15. http://comancheclub.com/topic/48136-my-ax15-swap/  I kept the pressure plate that was for the BA10.  My shifting has gotten stiffer, especially from 1st to 2nd, but all gears require some pushing to change gears.  No grinding of gears.

 

I did research on rockauto for part number changes for the pressure plates.  The PP part number stayed the same when Jeep switched from the BA10 to AX15 (mid -89)(Sachs SC1675).  Both trans used an internal slave.  When Jeep switched to an external slave (93), the PP number changed (Sachs SC1890).  I would suggest you change at least the PP.  FYI - the clutch disk part number did not change for any of the years.

 

I have read that hard shifting like I am experiencing is clutch related, like the PP.

[Skorpyo]

Thanks for the reply, so from what you're saying the pressure plate should be matched to the 89 part numbers vice the 95? If I'm going to order a new pressure plate I may just get a new clutch kit and be done with it both. Thanks!

 

 

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[87MJTIM]

I am saying that the PP should match the year of the trans, especially if the trans uses an external slave.

 

You can use the PP from the 95, but you most likely will need to change the pilot bushing

[Skorpyo]

Ah, ok now I'm with you. So I can just use the clutch and pp from the 95 which is good cause they're in great shape, better than the 89s set.

 

As for the bushing, I bought one a while back in planning,for the upgrade, but now that I'm looking at it there is currently a bearing inside the pilot bushing on the 4.0 but I'm just supposed to put in a bushing to replace a bearing? Won't that cause friction issues over time? Perhaps I'm over thinking it. TIA,

 

Tim

 

 

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[onlyinajeep726]

there is currently a bearing inside the pilot bushing on the 4.0 but I'm just supposed to put in a bushing to replace a bearing? Won't that cause friction issues over time? Perhaps I'm over thinking it.

 

Grease... Lots, and lots of grease lol.