Posted by David on Thursday, August 13, 2009 at 19:41:36 :
In Reply to: Re: Spitfire engine posted by mannyc on Thursday, August 13, 2009 at 16:12:09 :
I milled 80 thousands (.080) for about a point in compression. I first checked valve clearance with clay and it wasn't an issue. I found I needed a cooler plug or I burned the electrodes off. I went from a R45 to a R43 Delco plug at the time.
I also changed to an electronic distributor, a reground cam, and an exhaust header.
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