Quick tekkie question:

Can you list the spline pattern of the EF trannies for EX & Si in the 88-91 years?

Trying to figure out differences as we have a mismatch.
Can EX and Si trannies of the same year come with different spline counts?

I thought that 88-89 had fewer and 90-91 more, but is it possible that both spline patterns used in 90-91?

 

89-91 are the same, 88 is different. Only difference between 89 and the 90-91 is the clutch disk had a smaller diameter in 89, but spline count was the same.

 

88 has 21 splines on the input shaft, 89-91 has 20

 

Seems to me the Pressure plate differs from 90-91 and 89. Parts store gave us a 91 Clutch and PP, tried to install it into an 89 CRX Si and the PP wouldnt line up with the pegs.

 

hmmm what were they up to in st mary's ohio (site of the american honda factory)???

 

I'm pulling an 88 with a ZC swap clutch out now. I will post pics in a bit...

 

Jared has the correct info.

 

Cool.. Saves me from having to upload pictures.