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769 Views 2 Replies 2 Participants Last post by  joey112
I got the cylinder/head back from the machine shop along with a new 67.5 wossner piston. I'm in no rush to get it back together since my current engine is still running good so I decided to check the squish and it's .0750 using solder with a .010 metal head gasket and the piston is just below the deck at TDC. Does that squish sound about right for an OEM setup that hasn't had the head or cylinder deck milled? I'm going to do a UCCR just to do it but I'll be using 110 since I don't want to take a chance with pump gas anymore. My current engine in the trike as far as I know is also stock with 66.5 bore and a .010 gasket and cylinder cranking compression is 210.
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I recall .075 is stock. With my head designed to accept 108 cam2. Think it was 180psi. With .040 squish. Copper gasket. 12.7
There's a lot more to it than less squish equals higher octane. What was done to the head n port heights.
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