B18A block/crank
JDM B16 head

im wondering what combination of pistons, headgasket, block decking, head machining, and valves, etc, would be the best/most reliable way to make 12.1 compression with OEM parts.

 

USDM b16 pistons. Stock headgasket; stock head; stock valves

11.9x:1

 

this compression thing says 11.3 to 1. not sure how reliable it is. any other sugestions??? anyone know how much it would be with CTR pistons or P30s??

 

http://www.c-speedracing.com/h...c.php

 

p73 or p30 pistons. p30's will put you closer I believe.

 

P30's will do it.

 

P30's with a bit of head milling and a 2-layer gasket will get you there. What is your reasoning for wanting 12:1? P30's will yield around 11.5-11.7:1...nothing wrong with that. Actually, that's just about perfect for a daily driver.

 

im trying to go as hi as i can for a daily driver and that is about it. but my motor would be more manigable with a little less like 11.5-11.7:1. so that with stock 3-layer and no head milling??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redrusch &raquo;</TD></TR><TR><TD CLASS="quote">im trying to go as hi as i can for a daily driver and that is about it. but my motor would be more manigable with a little less like 11.5-11.7:1. so that with stock 3-layer and no head milling??</TD></TR></TABLE>
Yes.

 

two more things, like everyone else while, on the subject i just would like to know what cams would run in this set up the best as i was looking to run some sort of stage 2s, and the other thing is i just want to make sure its safe to use used pistons out of a running motor, or do you recammend new???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redrusch &raquo;</TD></TR><TR><TD CLASS="quote">two more things, like everyone else while, on the subject i just would like to know what cams would run in this set up the best as i was looking to run some sort of stage 2s, and the other thing is i just want to make sure its safe to use used pistons out of a running motor, or do you recammend new???</TD></TR></TABLE>

Don't ever use used pistons. Could you get away with it? Maybe. But why risk it? If there is one scratch or nick in those pistons, you could scratch your cylinder walls resulting in burning oil.

 

just figured i would ask as i have a donner jdm b16 motor, it is safe to use used LS rods though after shotpeening them though right???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redrusch &raquo;</TD></TR><TR><TD CLASS="quote">just figured i would ask as i have a donner jdm b16 motor, it is safe to use used LS rods though after shotpeening them though right???</TD></TR></TABLE>

it's not necessary to shotpeen them. But yes, it's safe. The shop you are having do the work should inspect the rods for out of roundness on the big ends.

 

cool thanks for all the help man, one other thing got any suggestion for cams in a set up like this??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redrusch &raquo;</TD></TR><TR><TD CLASS="quote">cool thanks for all the help man, one other thing got any suggestion for cams in a set up like this??</TD></TR></TABLE>

If you're going to use the P30 pistons...any stage 2 cam will work good....or comparable: Rocket M22x, Buddy Club spec 4, etc.

 

cool thanks again

 

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