my motor is apart now and in process of getting rebuilt but before i go ahead and put my CTR pistons on my B18C5. i'd like to clearify few things.

i bet this has been covered enough times here but i couldnt find the straight answer. everyone just says clay the motor and check it for yourself. i know i have to do it but before i actually build my bottom end with ctr pistons i'd like to make sure again.

i'd like to hear from people that actually has the CTR pistons. not just by guessing or assuming

please help me out

thanks alot

 

There is only one way to give you an exact answer, and that is to clay the motor.

There are too many variables, including how the cams were degreed in and if the head or block has been milled, so even if someone else on this board has CTR pistons and M22XX, their clearances may differ from yours by a few degrees.

FWIW, I would opt for the P30 pistons rather than the CTR's. The CTR's, while yielding a higher compression ratio, have a very high dome which stunts flame travel and hinders power. A flatter, less domed piston can make more power with less compression. We have built many 200+whp 1.8L's using JDM ITR or JDM P30 pistons.

 

damn. i think it's little too late for me. i took the bottom end to machine shop with my ctr pistons to be installed.

my head is not milled. using stock head gasket.
i'm just hoping it will clear.

 

I dont know anything about the cams you are going to run, but I will say that I had CTR pistons with JUN3s and a slightly milled head after a valve job and had no clearance issues. So if the cams you are going to run are anything like the JUN3s you should be fine, especially if you havent had any milling done to the head.

But like said before, only way to know FOR SURE how much clearance you have, is to clay.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by clip the apex &raquo;</TD></TR><TR><TD CLASS="quote">I dont know anything about the cams you are going to run, but I will say that I had CTR pistons with JUN3s and a slightly milled head after a valve job and had no clearance issues. So if the cams you are going to run are anything like the JUN3s you should be fine, especially if you havent had any milling done to the head.

But like said before, only way to know FOR SURE how much clearance you have, is to clay. </TD></TR></TABLE>

ok. i see where you are coming from.. yeah i dont think my cam isnt too much more aggressiver than jun3's so i am guessing it's ok to put them on but still should clay it..

when it's all going good. i will update on my rebuild

 

With stock head gasket and timing belt installed properly you should be fine. Just clay it so you know how much adjusting you can do on the dyno.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Aquafina &raquo;</TD></TR><TR><TD CLASS="quote">With stock head gasket and timing belt installed properly you should be fine. Just clay it so you know how much adjusting you can do on the dyno.</TD></TR></TABLE>



cant wait for this thing to be done