smokin 421 Posted November 17, 2009 Report Share Posted November 17, 2009 just built a 421 vito's cylinders, vito's hemi head II with 19cc domes im only getting 125psi... im running .060 of squish from piston to head vitos says that is good but somthing isnt right... 2000ft elevation... please help i dont know what to try next tighter squish? Quote Link to comment Share on other sites More sharing options...
blowit Posted November 17, 2009 Report Share Posted November 17, 2009 just built a 421 vito's cylinders, vito's hemi head II with 19cc domes im only getting 125psi... im running .060 of squish from piston to head vitos says that is good but somthing isnt right... 2000ft elevation... please help i dont know what to try next tighter squish? Did you kick until the gauge maxed out? How is your gauge doing?? Take a picture of the adaptor tip that goes into the head and post it up. Mull Engineering Quote Link to comment Share on other sites More sharing options...
smokin 421 Posted November 17, 2009 Author Report Share Posted November 17, 2009 Did you kick until the gauge maxed out? How is your gauge doing?? Take a picture of the adaptor tip that goes into the head and post it up. Mull Engineering yea kicked it till it wouldnt go any higher... my adapter is the same length as my spark plug so theres no drop there.. any other ideas im not sure.. im gona go to a thinner base gasket and take the motor down to .040 of squish i know that will bump it up but it shouldnt be as low as it is right now Quote Link to comment Share on other sites More sharing options...
blowit Posted November 17, 2009 Report Share Posted November 17, 2009 yea kicked it till it wouldnt go any higher... my adapter is the same length as my spark plug so theres no drop there.. any other ideas im not sure.. im gona go to a thinner base gasket and take the motor down to .040 of squish i know that will bump it up but it shouldnt be as low as it is right now Do you have a schrader valve in the tip of your comp adapter? Does it work correctly. B Quote Link to comment Share on other sites More sharing options...
smokin 421 Posted November 18, 2009 Author Report Share Posted November 18, 2009 Do you have a schrader valve in the tip of your comp adapter? Does it work correctly. B actually im not sure if it has the valve in the end i want to say it does but i will have to check when i get out of work im going to try a diff. gauge as well ill get back with ya when i find out Quote Link to comment Share on other sites More sharing options...
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