Hey
I just purchased some CTR pistons

I heard that the rods need to be machicned a total of 1mm at the top, is this true?

Also I will be running a GSR head with a 2-layer OEM head gasket, should I worry about clearence issues? if I do, does anyone know of any good sites that show you how to properly clay a block?

Thanks in advance

 

I did do a search, but I didnt find the answers I was looking for.
I did find that, you shave off 1mm on each side for a total of 2mm on the rods, and another member suggested that you take 1.5 off each side for a total of 3mm

 

well man...
i know the proper way is to put pistons in but if ya just shave ur head u will save money.
and get the same out come.
just my 2 cents...

 

how is shaving the head cheaper?

 

you would have to shave the head about .035 to get same results as using pct and a 2 layer head gasket......

not good to shave head that much!!! in a daily driver setup

 

I dont want to shave the head, im keeping the head fairly stock, changing only the springs, reason why, for a future setup that I will be running.

this is just a quick setup that I will be building to keep my sane while everyone else I know is kicking *** out here

 

You shouldn't have to worry about clearance issues with that setup.

 

even with the de-shimmed head gasket?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hybridnorth &raquo;</TD></TR><TR><TD CLASS="quote">even with the de-shimmed head gasket?</TD></TR></TABLE>


even with a 2 layer headgasket....

i milled the head .035 and ran a 1 layer and had no clearance problems!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hybridnorth &raquo;</TD></TR><TR><TD CLASS="quote">Hey
I just purchased some CTR pistons

I heard that the rods need to be machicned a total of 1mm at the top, is this true?

</TD></TR></TABLE>

Im taking a stab in the dark about the pistons here. Just when you remove your old rod-piston combo measure how much clearance you have in the area you are unsure about, maintain this clearance by shaving the proper amount off so you have the same clerance with the CTR pistons.

-Eric

 

you are correct to remove 1mm per side on any B16A/B17A rod to fit any ITR or CTR piston to it.

you could mill the piston's pocket instead but the rods are easier for most shops to clamp/hold.

http://www.c-speedracing.com/howto.php shows how to clay a motor.

 

awesome thanks guys

yea I checked out the c-speed site on how to clay a motor, seems very simple and straight forward

thanks for the tip on measuring the clearence in the pocket

 

I wanna do the samething. Can i use my b16 rods with the ctr pistons? also i must have the head shaved for clearance?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jmorin &raquo;</TD></TR><TR><TD CLASS="quote">I wanna do the samething. Can i use my b16 rods with the ctr pistons? also i must have the head shaved for clearance?</TD></TR></TABLE>

have you read the posts in this topic?

-Eric

 

the guys at the machine shop had to shave a little bit more than 1mm on each side of the rod

no you dont have to shave the head

ill be claying the block with a used 2 layer hg, i still got the other one in the package

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hybridnorth &raquo;</TD></TR><TR><TD CLASS="quote">ill be claying the block with a used 2 layer hg, i still got the other one in the package</TD></TR></TABLE>

This is probably pretty obvious, but if you'll be using adjustable cam sprockets, be sure to set them as far as you foresee adjusting them to be certain you'll have adequate clearance when you're tuning.

 

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

This is probably pretty obvious, but if you'll be using adjustable cam sprockets, be sure to set them as far as you foresee adjusting them to be certain you'll have adequate clearance when you're tuning. </TD></TR></TABLE>

oh yea diffenatley

im just worried later on this year when the wallet heals ill drop a set of cams in, i guess i should write down what i find and do lot of reshearch on how much lift the cams have

assembling the block this weekend, ill post up pics as i work on it

 

would u have to worry about clearance issues with .25 oversized ctr pistons into a jdm b16 sir2?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JdM_Eg_6 &raquo;</TD></TR><TR><TD CLASS="quote">would u have to worry about clearance issues with .25 oversized ctr pistons into a jdm b16 sir2?</TD></TR></TABLE>

no, boring oversized will lower compression slightly. It in no means increases stroke, therefor if they clear fine with a stock b16, then they will clear a bored out b16.

 

thank u so much for the info. so do you think this would be a nice street set up?

jdm b16 sir2:
ctr cams and skunk2 ecu
ctr pistons oversized .25
plus all the other little bolt ons etc.?

please give me all the info you guys know about this thanks a bunch!

 

bump.. bring on all the info please

 

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

no, boring oversized will lower compression slightly. It in no means increases stroke, therefor if they clear fine with a stock b16, then they will clear a bored out b16.</TD></TR></TABLE>
overboring will increase compression. im suprised none of you guys are having head to piston clearence issues w/negitive flushness the ctr pistons yeild in the b16 blocks.

 

You dont touch the rod it's the piston that needs to be milled on both sides if not the rod will lose its structural integrity and crack and you don't have to worry about clearance unless you deck the head i have the exact same setup b16a2 jdm with ctr pistons which shoudn't be any different on a b18

 

always clay your engine to make sure !

 

how do u clay ur engine without gettin clay in the valves and pistons.. where can i get some instructions on this? never knew how to do it