i want to know if i can use a crx tranny with my 91 civic si clutch or do i have to change the clutch and how about the 89 civic si tranny is that the same or what what do i have to do to make the crx or the 89 civic si tranny work with my 91 civic clutch

 

OK, the disks will match the tranny. The press. plate will match the flwheel. So, to use a 89 clutch with a 91 tranny, you need a 91 disk, and any 88-91 press. plate. You can use any 88-91 bearings i think. Ryan

 

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its been discussed multiple times on honda-tech, but i think this might help you out a little. its a link with most of the differences between the model years. https://honda-tech.com/zerothread?id=568024 it says a lot about clutches.