I was looking under the hood of my friend's '90 CRX DX auto today, trying to solve his rpm problem, when I noticed his brake master cylinder said 15/16 on it, and not 13/16 like I thought it would. So apparently there are more applications for the 15/16 master cylinder than the 90-91 Civic EX sedan. Anyone else know of other one's that utilize this same bore? Cause I'm thinking it's also the same one used in the 3rd gen prelude too.

 

CRX Si are normally 7/8 MS. 15/16 is possible tho, im no expert