Originally Posted by MarkSumpter
Please enlighten me how a cover equalizes pressure on the seal as the sealing action of crank seals primarily from crankcase pressure inflating the inner wall slightly expanding the ribbed surface to seal on the crank.I don't think there is enough internal pressure in the clutch compartment to affect the seal at all. The only reason there is a gasket on either the clutch cover or mag is keep out water which is detrimental to both.
By the grace of allah and the seal on my clutch cover I was able to run on a blown seal 30 miles to get home. Without that clutch cover on it wouldn't even idle. Trust me, not blowing smoke - that's all experience.