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Bassman/NZ · 04-29-2014, 02:31 AM

I arrived at the 50thou by using the tinfoil ball system. The tinfoil spec'd out at 95thou. Ol Ron and JWL recommended a 45thou quench space, so there's the 50thou. There was heaps of space above the valve heads, so that did not enter into the equation.

04-29-2014, 02:31 AM	#13
Bassman/NZ Senior Member Join Date: May 2010 Location: Napier, New Zealand Posts: 2,001	Re: Results of milling iron heads. I arrived at the 50thou by using the tinfoil ball system. The tinfoil spec'd out at 95thou. Ol Ron and JWL recommended a 45thou quench space, so there's the 50thou. There was heaps of space above the valve heads, so that did not enter into the equation.