i am thinking of rebuilding my B18c5. that has CTR pistons in it. the CR is too high for me i want to lower it to around 11 something. i was thinking jdm itr pistons .. or some forged piston/rod combo. i want to make around 200 whp which i make right now. but i want it to be more reliable. so what's the pros/cons on forged pistons/rod over oem honda ones?
btw i'm running rm m22xx cams and 310cc injectors

 

forged pistons, stronger, and may be an overkill for your setup imo.

 

so how would i build it with forged and NOT make it a over kill

 

If you just want to lower CR, why not go a thicker cometic headgasket?
Forged should be bullet-proof, but again it seems like more trouble than its worth -taking apart a good bottom end.

 

oh and i do have bad ring from bad initial start up of the motor. it has to be replaced

 

it's simple...

rebuild stock motor-stock cast

build stock motor-forged

 

You could go with the forged SRP's, their mearly an econo grade forged piston thats "lowboost" friendly as advertised. Personally I dont think there worth the money because there roughly ~$400 a set, and for another $100 you could just get regular JE's

 

A thicker headgasket is a bandaid approach to running too high a comp level. Changing out the pistons, although more expensive is the proper way.

How many people do you know that have piston failures on all motor builds? what about rod failures? Most if not all of any you might see are usually caused by another part failing or poor tuning. Forged internals like rods and pistons do not really make any sense on your average street performance build or weekend warrior racer unless you're running boost or N20 or very competitive level racing.

You may not know this but some forged rods will be heavier than the more than adequate stock rods and cast pistons. Lighter weight internals tend to be an advantage. Piston to wall clearance is trickier with forged pistons and they can make a little more noise on startup.

In short, why pay all the extra money for something that is going to be heavier, require more attention to detail when assembling and is really no more reliable in the typical build than good quality stock parts?

 

went from stock itr pistons and got ctr pistons.. now i need another rebuild cuz the ring are shot.. so i only came up with nippon and rs machine cast pistons. but they are same as the itr pistons. i dont want to go back to itr pistons because it makes me feel bad and stupid. and what's the point of going back to the same pistons.. but i dont really like forged pistons because it's gonna stay n/a and i won't like oil consumption problem with forged pistons.. and noise and what not.. so is there anything out there i could use that is better than oem. ??any other options?

 

if youre building a 190-200ish hp motor on a budget and your bore is 81 or 81.25 there isnt a better bang for the buck piston than an over the counter P30

 

Go vote for obama.

clown.

 

i wasted my vote on your mammy, maxwell j. kind of pennsylvania.

 

ITR and CTR pistons are not the same at all. Do some reading on here and you will see that CTR pistons are considered a poor choice by most people and builders because they are the heaviest of all the B-series pistons and have large domes. JDM ITR pistons or even JDM b16a (p30) pistons would have been a much better choice.

 

Go OE and spend the difference on a header like the one Vteckidd is selling.

 

got a decent header already.. anr long tube.


and yes i know ctr pistons is not the same as itr.. i got around 12.5 + cr now..

 

hy i got this set up in my 2001 itr
jdm itr pistons oversize & rods
mugen head gasket
port head w/skunk2 valvetrain
skunk2 stage pro 2 camshaft


anyone can toll me if aneed forged piston or the jdm irt are fine

 

Forged is unnecessary unless you boosting, spraying, or getting 400 horse plus out of your engine


What you could do if all your looking for is lowering cr is take your slugs out bring the block and pistons to a machine shop with some new rings and tell them to hone your block and machine down the dome on your piston then assemble it. Your cr is lowered and you didn't have to dump cash on new slugs

Stay away from cometic gaskets imo