aight guys i have an OEM all motor build. i am running ek9 cams on my head. i had a question about the bottom. as i am starting to gather parts for the bottom end, i wanted to know which OEM honda pistons are best to use???
EK9, USDM Type R, or JDM Type R???
i think only the USDM Type R pistons will pass smog correct?
thanks guys i appreciate it!

 

itr or p30 pistons give you a more reasonable compression ratio for pump gas. which engine are you building?

 

building a b16a2...head is all done up and now i got the bottom end to work on. i am still debating if imma swap out the crank or not for something else.
is p30 the JDM B16a pistons? will that pump more power than ITR or EK9 pistons?
i pretty much the best OEM honda b series pistons

 

with stock ecu and any of those piston you will pass smog.
got ctr piston on itr motor running stock ecu and passed.

 

oh ok kOo...so what are the best OEM pistons i can get??

 

list your mods please.

 

I would run JDM P30 pistons.

 

so the p30 pump out higher compression than Ek9 pistons?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by YoungMoneySi &raquo;</TD></TR><TR><TD CLASS="quote">so the p30 pump out higher compression than Ek9 pistons?</TD></TR></TABLE>
edit:
no. lower. ctr compression is not as high in a b16 block due to the smaller stroke, unlike a 1.8





Modified by Brick Top at 5:25 PM 10/12/2007

 

ek9 = ctr?

if so, no, the p30's are not as high as the pct's, but they provide a more useable compression ratio for low octane gas.

 

they are gonna go in a 1.6 block

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by YoungMoneySi &raquo;</TD></TR><TR><TD CLASS="quote">so the p30 pump out higher compression than Ek9 pistons?</TD></TR></TABLE>

CTR pistons are too much of high compression. thats why i said JDM p30.. close enough. a little better then ITR compression wise i believe.. unless I'm wrong someone correct me.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by meots98itr &raquo;</TD></TR><TR><TD CLASS="quote">list your mods please. </TD></TR></TABLE>

 

if all the smog components are good (o2 sensor, catalytic converter, timing ), CTR pistons in a b16a should be able to pass smog. im not sure how much more compression those pistons will bump.

 

p30 pistons would probely be the best right now...bumps up the compression a little bit more then the ITR

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1.8L_allmotormilitia &raquo;</TD></TR><TR><TD CLASS="quote">

CTR pistons are too much of high compression. </TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Brick Top &raquo;</TD></TR><TR><TD CLASS="quote">
ctr compression is not as high in a b16 block due to the smaller stroke, unlike a 1.8 </TD></TR></TABLE>

 

pm'ed