what should i shoot for for compression ratio
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From: Allen Park, MI
what should i shoot for for compression ratio plan on spraying a big shot on the new motor soon, getting ready to get my heads, i plan on pump gas in the tank with race fuel in a stand alone fuel system when i do spray the motor.
my question is should i try to get my cr as high as i can on pump gas, or should i keep the compression down slightly. i dont plan i giving it the hit all at once, it will be progressively controlled.
thanks for the help
my question is should i try to get my cr as high as i can on pump gas, or should i keep the compression down slightly. i dont plan i giving it the hit all at once, it will be progressively controlled.
thanks for the help
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From: East Side Performance! mASShole
dude, if you are going 300 shot, add some race gas to the tank for safe keeping. but i wouldnt go over 11-1 with pump gas.
shiz didit withgreat sucses, but he is one of the few
shiz didit withgreat sucses, but he is one of the few
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From: Allen Park, MI
Originally Posted by Noyzee
dude, if you are going 300 shot, add some race gas to the tank for safe keeping. but i wouldnt go over 11-1 with pump gas.
shiz didit withgreat sucses, but he is one of the few
shiz didit withgreat sucses, but he is one of the few
just trying to figure out what i want my compression to be so i can order my heads
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From: East Side Performance! mASShole
Originally Posted by JDP
ya, ill definately put some race gas in there if im spraying all 300 ponies through it, i should have said that, but i just want to make sure setting it up for the typical high compression pump gas motor is fine if im going to throw that much nitrous with race gas at it
just trying to figure out what i want my compression to be so i can order my heads
just trying to figure out what i want my compression to be so i can order my heads
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From: Allen Park, MI
Originally Posted by Noyzee
that said i would say with a nitrous tune with lower timming 12-1 is about as high as i would go with pump gas, and even they you may bea tad high. 11.5 is probably mint for street use and making good na power
time to figure out what cc i need my combustion chambers
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From: East Side Performance! mASShole
Originally Posted by JDP
alrighty, ill take your advice cause it seems like youve messed with nitrous a couple times
time to figure out what cc i need my combustion chambers
time to figure out what cc i need my combustion chambers
if so you are better off imo to make compresion with the pistions rather then cutting the heads. these cars needall the deck surface they can get once you start making big power
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From: Allen Park, MI
already have flat tops with -2cc reliefs, i am studding the heads and praying to god that there is enought meat on them bad boys to hold up, but im probably going with a shitty head to spray because there isnt a ton of meat on them, but im going to give it a shot.
dont want to say my setup because there are a few people on here that i dont want to know my setup so i guess ill keep that quiet
dont want to say my setup because there are a few people on here that i dont want to know my setup so i guess ill keep that quiet
Originally Posted by Noyzee
that said i would say with a nitrous tune with lower timming 12-1 is about as high as i would go with pump gas, and even they you may bea tad high. 11.5 is probably mint for street use and making good na power
Robert
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From: East Side Performance! mASShole
Originally Posted by JDP
already have flat tops with -2cc reliefs, i am studding the heads and praying to god that there is enought meat on them bad boys to hold up, but im probably going with a shitty head to spray because there isnt a ton of meat on them, but im going to give it a shot.
dont want to say my setup because there are a few people on here that i dont want to know my setup so i guess ill keep that quiet
dont want to say my setup because there are a few people on here that i dont want to know my setup so i guess ill keep that quiet
good luck.
robert, when is the new setup done?
Just waiting basically on the high tensile strenght ARP head studs. the short block is done and heads are ready. can't wait, as I am sure you understand, waiting on your new trick set-up to be finished. 
Robert
Robert
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From: East Side Performance! mASShole
Originally Posted by Robert56
Just waiting basically on the high tensile strenght ARP head studs. the short block is done and heads are ready. can't wait, as I am sure you understand, waiting on your new trick set-up to be finished.
Robert
Robert
If you are going to run NA on pump gas I wouldn't go over 11.5:1. There is a local guy with a 15:1 CR motor and its setup for a 250 shot but it won't run on pump gas NA and its also got the block and heads Oringed.
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From: East Side Performance! mASShole
Originally Posted by KCFormula
If you are going to run NA on pump gas I wouldn't go over 11.5:1. There is a local guy with a 15:1 CR motor and its setup for a 250 shot but it won't run on pump gas NA and its also got the block and heads Oringed.
