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Old 05-22-2022, 08:04 PM   #142
Bored&Stroked
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Join Date: Jan 2011
Location: Central Ohio
Posts: 5,062
Default Re: Spark Plug Protrusion into Head?

Quote:
Originally Posted by Tim Ayers View Post
No, repop Cyclones. The hole depth is +/-.625". I tired to post a pict, but the file was too large. I have a set of new block letter Edlebrocks on the shelf in case I need to swap.

For a number of reasons, I would not have used these Cyclones if I was to do it again. They have some porous areas and are weeping at the two casting nubs on each head. I'm going to run some silicon silicate to hopefully stop those weeps coming from the casting nubs.

I wanted pre-war heads and these were originally made just before the war.
Yeah, there were not many heads made before WWII. I have a set of Eddie Meyers, but I just didn't want to work the Hell out of the combustion chambers to handle the big-ass cam that I'm running . . . so I put a set of my Navarro's on instead (not pre-war). Sometimes one has to compromise!
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