Quote:
Originally Posted by Russ/40
If I recall correctly, it states to enlarge the 5/8" center hole in the head to 3/4".
B&S, that 99A in post 16 is mighty pretty, a true work of art! Those Cometic gaskets are amazing, and expensive, but with a choice of thicknesses could be very handy.
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Thanks Russ - you might say there are "a few hours" of work in that engine block - starting with a NOS engine from WWII.
I decided to use the Cometic gaskets as an expensive test - wanted to see how well they did as they are probably a viable option for a decent amount of boost, such that we don't have to do CNC O-Rings in the block and heads (which really help in high levels of boost, but are not easy to implement).
I built this engine as kind of my 'experimental' platform to try a few things out (like the really long duration roller cam, coatings on pistons, valves, bearings, nitriding a Merc crank, etc).