big bore head or not
ive had a 80cc kit in for awhile. should i upgrade the head. will it give me a speed boost.
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The big VALVE head will improve performance, the big bore head with stock valves will just lower compression and decrease performance.
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OK that is what I've been looking at the big valve head. another thing is they say to check the valve to piston clearance what do i do if it is too tight, if anything? or should i just throw it on and hope i'm lucky? what do you think?
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use two base gaskets
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thanks
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I need one baddd
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You should always check for piston to vavle clearance |
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I have two base gaskets on my 52mm kit with a9 cam and big valve head, i think if i used one the electric starter wouldn't start it, due to the compression
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