ok i have a clutch that has been sitting in my room for about two years now i know that the 88 si tranny is the odd ball and will not work with 89-91 si clutches. how can i tell what year clutch i have?

 

21 splines = 88
20 splines = 89-91

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HumanResource &raquo;</TD></TR><TR><TD CLASS="quote">
21 splines = 88
20 splines = 89-91

</TD></TR></TABLE>

dont forget:
88-89 have a smaller disc than the 90-91

 

does that really mean anything though?

 

if you get a disc for a 90-91 and put it on a smaller 89 flywheel, well its not to hard to figure out

 

ohhh no i guess i should have been more clear, i have a full clutch kit

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by classciv &raquo;</TD></TR><TR><TD CLASS="quote">ohhh no i guess i should have been more clear, i have a full clutch kit</TD></TR></TABLE>doesnt matter, 89 disc was different from 90-91

88 - 21 spline, 190mm
89 - 20 spline, 200mm
90+ - 20 spline, 212mm

 

Just wondering... Assuming I don't really care, what if I re-used my 89' presure plate, and just trimmed 12mm's off a 90-91 clutch disk ?

This is going on a BONE STOCK 189K mile CRX daily drive, not a race car of any sore. I don't think the car has seen 7K RPMs in 3 years.

Of course I say this, b/c I got a free 90-91 clutch/presure plate, and have an 89'.