cj7den Posted January 25, 2012 Report Share Posted January 25, 2012 I picked up a set of used jugs and head and need to figure out head clearance. I have read about the squish test. How do I get a good start on how to figure out the thickness needed. The jugs are 69mm bore and the stock head has less of a ridge then my other stock head. So I would guess that it has been milled. The guy that I got this setup from does not know anything about the head as he never run it. The piston does come out of the cylinders when at tdc and hits the head. I am a newb at all this please send me in the right direction on how to go about this. Thanks Quote Link to comment Share on other sites More sharing options...
Surfrjag Posted January 25, 2012 Report Share Posted January 25, 2012 so do you have a 4mil crank? if so you need domes cut for a 4 mil. also would help if you have the cylinders ported for the 4mil as well.. Quote Link to comment Share on other sites More sharing options...
cj7den Posted January 25, 2012 Author Report Share Posted January 25, 2012 stock lenght crank I belive. Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted January 25, 2012 Report Share Posted January 25, 2012 How far do they stick out? You talking on the edge or at crown of piston? Quote Link to comment Share on other sites More sharing options...
cj7den Posted January 26, 2012 Author Report Share Posted January 26, 2012 Banshee is at friends shop. The piston edge comes out maby a 1/16 inch. Quote Link to comment Share on other sites More sharing options...
cj7den Posted February 9, 2012 Author Report Share Posted February 9, 2012 So i used a dial indicator and the piston comes out of the jug on the edge .043". So if I aim for .05 head gasket thickness that should be a good start? Quote Link to comment Share on other sites More sharing options...
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