05-14-2017, 01:11 PM
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CC Member
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Join Date: Apr 2016
Location: Phoenix,
AZ
Cobra Make, Engine: Ex owner of a polished Kirkham 427 S/C. Now Cobra-less and driving a mid-engine German hot rod.
Posts: 828
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Quote:
Originally Posted by moore_rb
Hmmmmm.... Would I re-use that piston?
In a 200 HP, 4000 RPM truck engine: yeah, probably. A little work with the file to knock down all those rough edges (those are future pre-ignition/detonation risks) and I could live with one cylinder that is 1/4 point off in the compression ratio.
But in a 6000+ RPM hot rod engine? Hmmmmm... 
Considering that it looks like a generic Sealed Power piston, it's only gonna add about $30 more to the repair bill if they're cast pistons, and maybe $60-$75 more if they're forged... Cheap insurance. JMHO 
(Side-bet: I'll wager that those are cast pistons, and that what you got there is a generic parts-store rebuild long block- I can't imagine a performance engine builder using inverted dome pistons on a street/strip performance engine build- again, JMHO) |
My FE has dish pistons (Diamond) to keep the compression at 10:1. It would have been closer to 11:1 with flat tops. Mike may have the same issue depending on his heads. |