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372xp Is this too close? Cylinder Expansion?

jrwied

jrwied

ArboristSite Operative
Joined
Jun 8, 2019
Messages
122
Location
Arkansas
I ended up tossing my huztl cases. I’m transferring everything over to a 371xp case that had some accoutrements already the OEM flywheel seems mighty close to jug after base gasket deleted. Nothing rubs. Any body got a safe measurement (2,3....10 business cards) of a safe gap. what kinda cylinder growth I’ll get once hot? Should I grind down the cylinder a frog hair? I don’t want this thing blowing to pieces.
 

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trappermike

trappermike

ArboristSite Guru
Joined
Jun 18, 2011
Messages
966
Location
British Columbia,Canada
Ok,so your squish is a little big,I like .020" -.025",so reducing it .010' would be fine. Simply make yourself a thinner cyl. gasket,usually stock may be about .020",the cover of a phone book are often about .010",so that would do it. Measure your stock gasket with calipers then go find something .010" thinner and make a gasket. As for the flywheel getting close to the cyl.,just trim a tiny amount from the cyl.at the close spot,should be good.
 
Huskybill

Huskybill

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May 21, 2018
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6,266
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Has anyone measured the squish when the engine is cold and hot? To set a baseline for tolerance? Everything expands when heated.
 
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