Looking for any advice or experience of anyone who has sealed a primary case on a shovelhead, I'm working on a 84 lowrider and the guy wants to know if we should seal the primary? If so will I need to change the clutch also?
Thanx in advance,
Hogrotten.
Thanx Jack, according to the book there are two types of clutchs 1.Dry clutch(wich is on the belt drive primary models) and 2.Wet clutch for the chain drive primarys.This is a loaded question, if you are running a wet clutch you can seal it, if it is an older dry clutch then you could face slippage By sealing it you can shut off the oiler on the oil pump
On my 1982 FXRS, I removed the original primary case lube system plumbing after about 5000 miles when I saw the condensation and rust during chain adjustment - could not see any reason to feed that stuff into the engine oil. I would fill the case with oil to the bottom of the clutch drum when it was on the side stand with Mobil 1. Never had a problem - sold it in 1997 with 81,000 and it was still going strong. (Wish I still had it.) Never altered the clutch from stock - basically a splash system without submerging the plates.