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Post by gy6fandan on Jul 18, 2014 13:59:54 GMT -5
I just did a Piston-to-valve Clearance test with modeling clay.
I don't know what the clearance measurements should be for intake or exhaust between valves and cylinder head.
Help would be greatly appreciated.
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Post by UniqueSP on Jul 18, 2014 14:08:48 GMT -5
you installing a stroke crankshaft?
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Post by gy6fandan on Jul 18, 2014 14:25:57 GMT -5
A9 camshaft on gy6 150cc stock cylinder
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Post by UniqueSP on Jul 18, 2014 15:03:45 GMT -5
A9 camshaft on gy6 150cc stock cylinder I have had many customers do that and they just install the regular head gasket. Your valves should not hit the piston since your running a stock crank and your camshaft is not a big one like the A-15 to A17 |
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Post by gy6fandan on Jul 18, 2014 16:01:01 GMT -5
The head is new - big port with stainless steel valves - the valves seem to be the same size as the original.
The clay test shows .13" clearance in and out.
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Post by UniqueSP on Jul 18, 2014 21:18:41 GMT -5
I have never in my life done a clay test or valve clearance test on any engine i have built with a stock crank. the big port valve head you got i know that head the valves are same size as stock just flat. You will be good. Put it together and turn the engine by hand if you want to make sure nothing is hitting.
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Post by gy6fandan on Jul 25, 2014 10:01:08 GMT -5
UniqueSP --> Thanks for the info  Still in the process of fine tuning... carb jet, exhaust, etc. |
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