Reply to "Valve in new engine not seating"

LeMans850iMember

@stevebuchanan posted:
Great information all. I will lap the two valves and test with gasoline. After assembly I will do a leak down test with compressed air since it is already setup.
On the other head (driver side) there is a faint compressed air leak on one exhaust valve. It is unlikely that gasoline would leak through that valve since the 85 PSI air leak is only barely detectable.
Before assembly I will measure the volume of the combustion chamber.
Thank you all.

You can give the leaking valve a “gentle “ tap with a hammer while air applied..

hopefully cleaning the seat …

if it’s a dirt issue…

10/9/241:22 PM

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