Looking to build a mild NA setup, still wanna make pretty desent power but nothing to crazy for daily street use. With the rebuild i will be replacing most everything: new balanced Crank, Rods, Pistons, Oil pump, and every possible bearing and seal to ensure a full rebuilt bottom end. To start things off here are list of mods on the civic:

-JDM B18C block completely stock.....
-'99 PR3 head machined w/ new ITR valve train, CTR cams, new valve seals, and adjustable cam gears
-Stock head gasket
-ITR TB
-SK2 intake mani
-Hondata intake manifold gasket
-'99 SI AEM cold air/short ram combo
-DC sports 4-1 ceramic (lookin to get a stainless 4-1 JDM ITR, Mugen, etc.)
-High flow cat
-Apexi N1 cat back exhaust
-P06 chipped w/ untuned uberdata (about to get tuned before the rebuild)

As of now my car smokes on hard acceleration, and burns more oil than necessary due to my rings going bad, so i intend to replace the rings for a rebuild.
Thats the mods list on the mota, a few things are gonna change with the rebuild but most will stay the same. I was just wondering w/ the head being milled tweny thousandths what pistons would be safe enough to run without the chance of valve to piston contact. I know the CTR pistons have a really high dome on them. Will at the least have the block honed out ot ensure cylinder walls are straight.

But i was thinking of going with JDM ITR pistons, Eagle rods, new balanced ITR crank, new Oil pump........

Would going oversized be to an advantage or disadvantage ?????

Would the CTR pistons still be safe to run on a milled head of .020 ???????

Comments are welcomed as always

TIA

 

Don't forget about decking the block a little to make sure it's straight as well. I have srp pistons with a 5.7 dome volume and have no problems. You can have the machine shop set your valves in some to give you some more clearance. However, I don't think .20 is enough to cause any major problems. I wouldn't recommend oversized valves. They arent worth it and will me more trouble than anything else, especially if your worried about clearance issues. Just have your machine shop clay your motor so you'll know your exact clearances and where you'll be able to move your cam gears.

The main problem with ctr pistons and a milled head isn't the piston to valve clearance, its that you'll be running over 12:1:1 compression. That's going to require high octane, above pump gas, or hondata tuning. When you get the cyliders honed, you can get them bored. This won't result in a major hp difference, however if you haven't got your pistons yet, why not. Good luck

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSVtecITR &raquo;</TD></TR><TR><TD CLASS="quote"> When you get the cyliders honed, you can get them bored. This won't result in a major hp difference, however if you haven't got your pistons yet, why not. Good luck</TD></TR></TABLE>


Yeah well as far as boring the block to run oversized pistons, i didn't know what the advantages/disadvantages are good or bad. Haven't bought anything just yet, but about to start gettin things together peice by peice.

thanks for the reply, anyone else

 

Bump for the sedan & Jonathan

 

.020 is not that much and shouldnt be a factor. if i were u id run ITR pistons and if youre really concerned clay the motor to make sure you have enough piston to valve clearance

PS ITR pistons will not fit onto eagle rods with out piston modification

 

'-P06 chipped w/ untuned uberdata (about to get tuned before the rebuild)'

if you plan on doing this soon, why would you waste the money to get it tuned?rather then do it after its finished

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by athoughts &raquo;</TD></TR><TR><TD CLASS="quote">'-P06 chipped w/ untuned uberdata (about to get tuned before the rebuild)'

if you plan on doing this soon, why would you waste the money to get it tuned?rather then do it after its finished</TD></TR></TABLE>

yeah, just wait johnathan my 4doe gsr killer isnt going anywhere

good luck with rebuild

 

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

yeah, just wait johnathan my 4doe gsr killer isnt going anywhere

good luck with rebuild </TD></TR></TABLE>

Ha Ha......did someone bring this back from the acrhives, lol j/p This was when i was debating on what exactly i wanted to do

I'm not gonna use uberdata now, going w/ the good stuff......Hondata