Stock B18C1 block, All stock GSR p72 head w/ skunk2 pro 1 cams, skunk2 valvespring/retainers, ferrea valves.

Will P30 pistons drop in fine on the OEM P72 rods.???? I know the c/r will be around 11.8 . thats what i want.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EG6 Poe &raquo;</TD></TR><TR><TD CLASS="quote">Stock B18C1 block, All stock GSR p72 head w/ skunk2 pro 1 cams, skunk2 valvespring/retainers, ferrea valves.

Will P30 pistons drop in fine on the OEM P72 rods.???? I know the c/r will be around 11.8 . thats what i want.</TD></TR></TABLE>

Yup

 

I know they drop right in in. My question is will the piston hit the valve?

 

No won't hit unless the block/head has been milled down alot. You should look into flat faced valves also for a .2 bump in compression.
Pretty sure you won't be at 11.8 maybe a hair under that unless again block/head been decked.

Pretty fun motor though but go with the JDM ITR pistons for a little more compression. I went with P30's and could have done bigger. Cost like 12.00 to have pistons swapped over at the machine shop but make sure to get new wrist pins and don't count on the old pistons to be much good when they are removed.

Don't know specs on the Pro 1 but they may want a little more compression to be fun. Stage 3's or crower 4's may put you in a fun zone depending on what you are doing with the car.

Should be fun street car though. Good luck on your motor.

 

i ran b18c1 with buddy club IV with pct, civic type r pistons. you will be fine.

 

without milling the head, and without a thin head gasket, doesnt P30 pistons give higher cr in the B18C1 than P73-00 pistons? someone clearify this for me. i am planing a rebuild and i would like to know.


Modified by krazy one at 11:34 AM 7/9/2008

 

Thats why I ended up going with p30's but I wanna say I found out that the jdm P73 pistons were just a touch more.

I didn't have any problems with around 11.8:1 compression though even on 90 - 91 octane gas.

 

thanks for all your input. I just ordered the P30 pistons with H-motors.

 

Thats where I got mine from. They come with new pins and you should get the rings for 100.00 more while your at it.

Steve takes care of people.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sauceja &raquo;</TD></TR><TR><TD CLASS="quote">Thats why I ended up going with p30's but I wanna say I found out that the jdm P73 pistons were just a touch more.</TD></TR></TABLE>

how so? the P30's have a higher dome, giving it a tad more compression. even on the compression calculator it says the P30's give more compression. how did you find out that the P73-00 gave more compression?

 

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

how so? the P30's have a higher dome, giving it a tad more compression. even on the compression calculator it says the P30's give more compression. how did you find out that the P73-00 gave more compression?</TD></TR></TABLE>You're absolutely right. P30's do yield a higher comp than P73s
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sauceja &raquo;</TD></TR><TR><TD CLASS="quote">Thats where I got mine from. They come with new pins and you should get the rings for 100.00 more while your at it.

Steve takes care of people.</TD></TR></TABLE>Yes!!! Steves the man. $289 shipped with rings and pins!!!

 

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

how so? the P30's have a higher dome, giving it a tad more compression. even on the compression calculator it says the P30's give more compression. how did you find out that the P73-00 gave more compression?</TD></TR></TABLE>

Somehow when doing some research like 2 years ago I read that on here somewhere. But I did have alot more results with p30's being the highest right under pct's. Thats why I went p30's.

Anyhow I am on to bigger better things with an H2B.

 

what engine management are you going to use?

 

Crome or VAFC piggy back or both together

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EG6 Poe &raquo;</TD></TR><TR><TD CLASS="quote">Crome or VAFC piggy back or both together</TD></TR></TABLE>

Lol, VAFC and 12:1 Compression.

Crome will work. Netpune or Hondata will be even better.

 

I run crome pro and it does fine. The injector pulse ratings are off though but that is something I can deal with.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mar778c &raquo;</TD></TR><TR><TD CLASS="quote">

Lol, VAFC and 12:1 Compression.

Crome will work. Netpune or Hondata will be even better.</TD></TR></TABLE>
So I should go Hondata huh??

 

i would definitely go with Hondata over crome.

 

Find a tuner and go with the system he prefers.