Fine, I change my orginal statment to...
"A PI head swap can yield impressive gains. I just don't like it because it raises your compression to the point that it's not really fesable to run a power adder on a daily driven Mustang from a reliabilty standpoint."
Happy?
Quote:
Originally posted by fiveohpatrol
You changed the focus by saying the raised compression makes the use of any power adder not an option.
Your focus was on compression and power adders, not the rods.
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The higher compression of PI headed 4.6's PLUS the increased cylinder pressure of a power adder is directly related to the first-gen 4.6's weak rods and pistons. It's the weak bottom is that pretty much rules out a PI swap AND a power adder because the increased cylinder pressure is hard on the stock bottom end.
A PI swap AND a power adder isn't a good idea because it raises cylinder pressure to a area that is risky for a weak stock bottom end. Not to meantion the increased chance of detonation.