P30's to raise compression
Thread Starter
Member
Joined: Aug 2002
Posts: 3,864
Likes: 1
From: Wilmington, De, USA
P30's to raise compression
My current motor is a JDM ITR motor.
According to http://www.zealautowerks.com/ my compression is ~11.3 (although, all published data says a JDM B18c(R) is 11.1.
That same calculator says that P30's would drop comprssion a little. I was under the impression it would raise it to 11.5-11.7ish.
Can anyone shed some light for me.
Thanks!
BTW, I have no interest in hearing about PCT's and I know there is a thread in the archives about them. The info about P30's is pretty vague from that thread.
According to http://www.zealautowerks.com/ my compression is ~11.3 (although, all published data says a JDM B18c(R) is 11.1.
That same calculator says that P30's would drop comprssion a little. I was under the impression it would raise it to 11.5-11.7ish.
Can anyone shed some light for me.
Thanks!
BTW, I have no interest in hearing about PCT's and I know there is a thread in the archives about them. The info about P30's is pretty vague from that thread.
Honda-Tech Member
Joined: Sep 2005
Posts: 1,191
Likes: 1
From: little place called HELL, us
Re: P30's to raise compression (88 rex)
the p30 does have a higher dome but a lower compression hight than the p73 so compression should stay about the same, someone correct me if i am wrong...
Honda-Tech Member
Joined: Oct 2004
Posts: 1,654
Likes: 1
From: cincinnati
Re: P30's to raise compression (mx621)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mx621 »</TD></TR><TR><TD CLASS="quote">the p30 does have a higher dome but a lower compression hight than the p73 so compression should stay about the same, someone correct me if i am wrong...</TD></TR></TABLE>
i believe the p30's still raise the compression more than the itr's. the amount depends on the head and milling.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 88 rex »</TD></TR><TR><TD CLASS="quote">So, if I HAVE to change pistons p30's should fit fine with no problems? Even if they are same compression, they are a tad lighter.
</TD></TR></TABLE>
they will fit fine on the itr rods. and your better off using the wrist pins that went with the p30 pistons
i believe the p30's still raise the compression more than the itr's. the amount depends on the head and milling.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 88 rex »</TD></TR><TR><TD CLASS="quote">So, if I HAVE to change pistons p30's should fit fine with no problems? Even if they are same compression, they are a tad lighter.
</TD></TR></TABLE>they will fit fine on the itr rods. and your better off using the wrist pins that went with the p30 pistons
Thread
Thread Starter
Forum
Replies
Last Post
