more than one way to get a specific CR which is best
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B*a*n*n*e*d
Joined: May 2005
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From: Hessian Aggression
more than one way to get a specific CR which is best
from what i understand a b16 block with PCT pistons and a pr3 head will yeild around about an 11.4:1 CR. that same bllock and head with p30s wit hthe head milled .030 will yield almost the same CR. is any one of the 2 desireable. does it make absolutely no difference how you get the CR you want?
also...how much would one need to mill a pr3 head if they used ITR pistons in that setup to get to 11.8:1?
id ratehr use OE honda stuff than turn to an aftermarket piston manufaturer especially since i can get the rings with the pistons and itll all be honda.
also...how much would one need to mill a pr3 head if they used ITR pistons in that setup to get to 11.8:1?
id ratehr use OE honda stuff than turn to an aftermarket piston manufaturer especially since i can get the rings with the pistons and itll all be honda.
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Joined: Apr 2000
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From: Atlantis
Re: more than one way to get a specific CR which is best (CRXofPain)
.....if you can get the c/r you desire without milling or decking, then that is preferable. There is more room for clearance between the pistons and valve - and this is good when you have bigger cams, which like higher compression.....
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B*a*n*n*e*d
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From: Hessian Aggression
Re: more than one way to get a specific CR which is best (Black R)
i think i heard differently form mike sarr who heard from omni man. yea. weird. he used p30s in his build. he milled .030 and had the pistons modified for clearance. im basically just wondering why he did that as apposed to just using CTR. its looking like ill leave my head alone as far as the mill and just use the PCT pistons and rings. maybe omni can chime in. my dvd is on its way to iraq. cant wait.
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From: medium pimpin
Re: more than one way to get a specific CR which is best (CRXofPain)
PCT slugs are heavier, and more weight is located above the pin, which, iirc, is located a bit lower in the piston than on the other B slugs. so, there's more weight to move, and possibly a greater moment arm, which means more leverage on the skirts, and more friction.
what you want is the best quench; if you can get the same compression with less surface area in the chamber (including piston domes), you'll get a a faster, more complete burn, and reduce the chance of detonation.
what you want is the best quench; if you can get the same compression with less surface area in the chamber (including piston domes), you'll get a a faster, more complete burn, and reduce the chance of detonation.
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Joined: Jul 2003
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From: western, PA
Re: more than one way to get a specific CR which is best (slofu)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slofu »</TD></TR><TR><TD CLASS="quote">PCT slugs are heavier, and more weight is located above the pin, which, iirc, is located a bit lower in the piston than on the other B slugs. so, there's more weight to move, and possibly a greater moment arm, which means more leverage on the skirts, and more friction.
what you want is the best quench; if you can get the same compression with less surface area in the chamber (including piston domes), you'll get a a faster, more complete burn, and reduce the chance of detonation. </TD></TR></TABLE>
what he said
what you want is the best quench; if you can get the same compression with less surface area in the chamber (including piston domes), you'll get a a faster, more complete burn, and reduce the chance of detonation. </TD></TR></TABLE>
what he said
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