Hi, I have an engine I built from scratch that uses PX200 casings (i.e. the ones with the rear axle oil seal on the inside). For many miles I used a standard P200 clutch, but I recently bought the Newfren Cosa II clutch (23 teeth), SIP P/N 93040000.
After installing the clutch, I find that the clutch cover rubs on the basket. This is an engine with an oil metering pump, so there is the gear inboard of the clutch rather than a spacer. The clutch nut is properly torqued down, so I believe the clutch is fully home on the crank. (I have a small mirror on the way so I can look behind the clutch to verify.)
I am unsure of the source of the clutch cover - other than custom machined covers, are there different sizes for e.g. PX150 vs PX200?
Are there other things that can cause this interference?