Clutch died on my 90 CRX Si, that has a JDM B16/Y1 swap. Bought the car with the swap. Car is at a shop now just replacing with an OEM clutch, but the mechanic says they're having a hell of a time trying to fit a new OEM flywheel. Odd to me, because from what I understand all B-series OEM flywheels are the same. Am I wrong? He says the inner ring of the flywheel they took off is 8 3/4" diameter, while all the ones they've had delivered and tried are 8 5/8". Could this be because they're using the wrong clutch/flywheel? Or could there be a reason for the previous owner to modify the pilot bearing? Any insight would be helpful.

 

not all B flywheels are the same, you answered your own question.

 

'90 - '91 Integra should be the right clutch kit and flywheel.

 

Thanks for the help. They finally figured it out. '90-'91 integra cluthch & flywheel.