badbattery Posted March 1, 2010 Report Share Posted March 1, 2010 Hi what is the best squish angle? Dune ported stock cylinders with vitos power forged pistons. My goal is 155psi compression and run 93 oct. Thanks for your input. Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted March 1, 2010 Report Share Posted March 1, 2010 you've only got one option and its 13 degree, those piston have the standard dome angle (13degree) and 21cc should get you up to 155 or so. Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted March 2, 2010 Report Share Posted March 2, 2010 (edited) uh, if you got a 13deg crown angle on your piston, then you will need like a 14.5 to 15 deg dome angle, especially if running 93 octane. rule of thumb is to have an squish band angle of 1 to 3 deg greater than piston crown angle. if angle is like only 1 deg greater, than be sure to run higher quality fuel. if running 3 deg greater angle, pump gas would be just fine....of course if compression ratio is within pump gas reason. Edited March 2, 2010 by mopar1rules Quote Link to comment Share on other sites More sharing options...
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