I get 9.2 Static & 8.1 dynamic for compression. My question comes in because I'm 2nd guessing doing the smaller stroker vs this bigger stroker..
But will the Kb forged pistons hold a 25cc dish?
Desertjr wrote:So my only option would be short rod with 2229 silvolites right?
Nope. You could still use the KB944s with 4.0L rods and try to gain a few cc by polishing up the combustion chambers instead of dishing the pistons.
Opened to 62cc then redecked the head because I accidentally went past the head gaskets edge. Still overhangs a hair but not enough to effect it. So I think I'm down to 61-ish. I think it was .008 removed.
I just decked to keep the 4.2l though. The extra cost just doesn't seem worth it for my needs, and id rather have a complete 4.2l to my wants vs 4.7l with sacrifices. i want roller rockers, dual roller timing set, this that & the other. easily 4000 with the bigger motor lol. Could always dish my pistons now to lower the comp some for a turbo 4.2l. Man how the brain wonders and how the wallet (& other half) yell in grief
I think 5-7psi is safe with just a map adjuster? I saw turbotpi running like 7psi on a stock 4.0 zj with nothing but a map adjustment and wideband..but then that's premium fuel, 1 more thing to fail on me.
