1/13/2024 0 Comments Cylinder head flycutIf the head had a step built in, would you set the piston to effectively 'zero' deck or do you still allow a section of space?Īlso to base shim I need to buy in some shims -If I'm doing that I may aswell get custom ones made up = something that I'm failing to find anywhere in the UK to do. Cylinder head height tolerances User Name: Remember Me Password: Register: Garage FAQ: Social Groups: Calendar: Search. I guess I'm asking the safe distance between the top of the piston and the shim, Fredster suggests 0.30mm which seems fair to allow for rock/expansion. Depends on the engine, piston, deck height, valve angle, head gasket thickness, Some people think you dont need a head gasket to flycut, this makes the. I was wondering what the tolerances are in height between the top and bottom of the cylinder head, i cannot find. Find many great new & used options and get the best deals for NICE USED ORIGINAL GENUINE PORSCHE 356SC 1600 SC CYLINDER HEAD NLA 61 FLYCUT at the best. Not using a paper base gasket would only then have around 0.20mm depth in the cylinder.my concern is not valves but the closeness to the head shim, this being wider obviously that the cylinder wall footprint No visual evidence - just trying to mke sure I don't see the piston side of the heads for a few thousand miles at least, and the PSI readings I had were all ok so reasonably confident it'll be fine.Īs it stands I can use 2 base shims a paper gasket, this will give me a depth in the cylinder of around 0.30mm, then my cylinder head shim of 1.02mm gives me a deck of 1.32mm which is CR of around 7.9:1
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