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what is squish clearnance and how do I measure it?

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ok guys I read a couple of posts on the squish thread but Im confused as to what squish clearance is and what effect is has on a motor....can some body please elaborate? How do I measure it? Do I need a special tool? Thanks in advance guys...

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the solder works.. we have used non sticky clay to measure as well.. engine at TDC.. Clay in the combustion chamber, old gasket, tighten to spec.. remove and measure

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You will need a micrometer thats reasonably accurate to measure.

I did nto use clay as I thought I might have to ship it off. I thought solder would hold up better.

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What sort of difference will you see after milling it?

Is starting or reliability impacted?

I see from other posts that some people mill the dome to lower compression back to stock. Why would you do that rather than leave it alone?

Thanks,

Brent

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