4milstrkr Posted November 21, 2012 Report Posted November 21, 2012 The last time I put a new top end in my banshee was in march of 2009. It is stroked 4mill, bored .40 over slight port job, cool head with 18cc domes. I haved noticed a loss of power and my compression has droped to 160 psi. and it still has the spacer plate under the cylinders. My big question is what whould i replace if i rebuild it and will removing the spacer plate and have a set of cut domes thrown in will I notice a difference. The crank was put in summer of 2008, how long do the bearings last on a hotrods 4mill crank Quote
rjdgriff Posted November 22, 2012 Report Posted November 22, 2012 With that much compression you shouldn't need a rebuild... Is it breathing well enough? I'd check filters, jetting etc. and go from there Quote
Jereme6655 Posted November 22, 2012 Report Posted November 22, 2012 What was your compression after your rebuild compared to now? You have or have NOT noticed a power difference since then? Quote
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