i just bought a b18c1 hatch, and i would like to build all motor. it already has a 4-1 header,intake, exhaust, blox intake manifold, and street tuned on crome pro. i would like to add high compression pistons and cams.

i would like be around 200whp and reliable.

do i need to upgrade the rods and valvetrain at 200whp? i would like to leave them stock since i have a limited budget as does everyone else, i know my h22 with a stock block used 100 shot of nitrous for about 2 years, then turbo @230whp for about a year before i built it. i don't know much about the b18c1 though.

if i can, what do you guess will be the whp. which cams and pistons should i use? i will be using 93 octane everyday.

thanks in advance for the replies

 

You need to search, there's plenty of information available to you if you're willing to look for it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00Red_SiR &raquo;</TD></TR><TR><TD CLASS="quote">You need to search, there's plenty of information available to you if you're willing to look for it. </TD></TR></TABLE>

Second that!!!

 

use buddy club +3 cams they can be use with stock bottom-end , hytech or such header 2.5 exaust and tune the hell out of it.. you wont be at 200whp but you will make some serious power for a stock bottom-end..!!

 

ya a nice header and mild cams would make that work... if you want to go higher.. buy my parts :D

 

will the buddy club+3 cams be fine with the stock valvetrain? and will there be enough piston valve clearance if i use itr pistons or ctr pistons?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 18gLUDE &raquo;</TD></TR><TR><TD CLASS="quote">will the buddy club+3 cams be fine with the stock valvetrain? and will there be enough piston valve clearance if i use itr pistons or ctr pistons?</TD></TR></TABLE>

BC3 should be fine fine with stock VT, altho i would recconmend u to get a set of aftermarket ones.. about the P2V clearence, i have use Sk2 Pro2 cams w/CTR pistons, no clearence issue whatsoever on a Full GSR set-up, with the head being decked like 5 times...

 

how much difference is the itr and ctr compression ratio on a b18c1? thanks for the quick relpy, i'm trying to search for all my answers right now.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 18gLUDE &raquo;</TD></TR><TR><TD CLASS="quote">how much difference is the itr and ctr compression ratio on a b18c1? thanks for the quick relpy, i'm trying to search for all my answers right now.</TD></TR></TABLE>

i think CTR pistons in a gsr is around 12.5:1-12.8:1cr
ITR's in a gsr is 11.5:1-12.0:1cr someone plz correct me if im wrong!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b20vtech &raquo;</TD></TR><TR><TD CLASS="quote">

i think CTR pistons in a gsr is around 12.5:1-12.8:1cr
ITR's in a gsr is 11.5:1-12.0:1cr someone plz correct me if im wrong!</TD></TR></TABLE>

Yep those numbers are a little off and he will find his answers if he spends a little time searching...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b20vtech &raquo;</TD></TR><TR><TD CLASS="quote">

BC3 should be fine fine with stock VT, altho i would recconmend u to get a set of aftermarket ones.. </TD></TR></TABLE>

I wouldn't reccomend anyone using stock gsr valve springs with BC3 cams, maybe, at the bare minimum stock itr valves springs, but not stock gsr's

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00Red_SiR &raquo;</TD></TR><TR><TD CLASS="quote">

Yep those numbers are a little off and he will find his answers if he spends a little time searching...</TD></TR></TABLE>

maybe if i wasn't in iraq right now, and had to wait 30 minutes just to get on a computer i can use only 10 minutes it would be easier to search, but i'll keep trying....hey i got an idea, since you keep reading my thread and typing useless answers, why don't you just answer the damn question? it would be shorter than what your typing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 18gLUDE &raquo;</TD></TR><TR><TD CLASS="quote">

maybe if i wasn't in iraq right now, and had to wait 30 minutes just to get on a computer i can use only 10 minutes it would be easier to search, but i'll keep trying....hey i got an idea, since you keep reading my thread and typing useless answers, why don't you just answer the damn question? it would be shorter than what your typing.</TD></TR></TABLE>

Obviously you have a legitimate reason for not being able to spend time searching but there was no way for me to know that. As I'm sure you already know, too many people come on here looking for easy answers and aren't willing to do a little work to find the information they need. That being said, I'll try to give you some answers:

You want 200whp with your setup, forget the CTR pistons period. It's not that you can't make that power with those pistons but there are better options. Use OEM Pr3 (USDM Civic SI) pistons which will give you compression of around 11.3-11.6:1. Its a relatively safe comp ratio that will work well on pump gas, will allow you ro run lots of timing and will work well with most any aftermarket cam suited for your engine. Skunk 2 stage 2 tuner series (not pro) will work very well on that setup and not cost you a lot to tune. Rocket M22x is another good option but will cost a little more. BC 4 and S2 pro1 cams are also good options but will require more tuning ($$) to get them right for drivability and power. Any and all these cams listed are capable of getting you into the 200whp range if built right. You WILL need valvetrain with ANY of these cams listed but you'll never come close to 200whp without upgrading them. You don't need to upgrade rods, GSR oem rods are forged. You're going to need a decent header like the Rage/Hytech style at least and a decent flowing 2.5" cat back. An AEM type R CAI is a good intake to use or a short ram with a velocity stack. Good tuning will also be mandatory.

I've given you lots of information to work with, the rest is up to you.

 

^ exactly the setup i'm shooting for
good info and knowledge...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00Red_SiR &raquo;</TD></TR><TR><TD CLASS="quote">

Obviously you have a legitimate reason for not being able to spend time searching but there was no way for me to know that. As I'm sure you already know, too many people come on here looking for easy answers and aren't willing to do a little work to find the information they need. That being said, I'll try to give you some answers:

You want 200whp with your setup, forget the CTR pistons period. It's not that you can't make that power with those pistons but there are better options. Use OEM Pr3 (USDM Civic SI) pistons which will give you compression of around 11.3-11.6:1. Its a relatively safe comp ratio that will work well on pump gas, will allow you ro run lots of timing and will work well with most any aftermarket cam suited for your engine. Skunk 2 stage 2 tuner series (not pro) will work very well on that setup and not cost you a lot to tune. Rocket M22x is another good option but will cost a little more. BC 4 and S2 pro1 cams are also good options but will require more tuning ($$) to get them right for drivability and power. Any and all these cams listed are capable of getting you into the 200whp range if built right. You WILL need valvetrain with ANY of these cams listed but you'll never come close to 200whp without upgrading them. You don't need to upgrade rods, GSR oem rods are forged. You're going to need a decent header like the Rage/Hytech style at least and a decent flowing 2.5" cat back. An AEM type R CAI is a good intake to use or a short ram with a velocity stack. Good tuning will also be mandatory.

I've given you lots of information to work with, the rest is up to you. </TD></TR></TABLE>

thanks that's exactly what i needed. no more searcing for me.

 

Im curious about this set-up, im going to be building a gsr with the pr3 pistons, and for the bigger cams and needing to upgrade the valvetrain, do you need all springs/valves/retainers or can you get by with just springs?

 

springs but they often come matched with retainers.

 

you will need both springs and retainers. theres no way of getting around that.

like he said, pr3 pistons will work just fine. personally, i went with jdm p30's, which gave me a little bit more compression for my pro 1 cams. in all the experience and knowledge that i have gained through building and talking with various shops, its not about what parts you buy necessarily, its the parts you pick that work the best with eachother.

for instance, i have a highend header that i picked up for 400 dollars and it ended up making more power and more torque than the smsp header i had. buddy club cams may work better for you in reaching your plans than skunk2 stage 2's.

the only way to know that is to talk with other people who have the same modifications, i.e. how the driveability is, how reliable it is, what power goals they've achieved, and most of all, who <U>tuned </U> it and what did they think of them.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by anothersickhatch &raquo;</TD></TR><TR><TD CLASS="quote">for instance, i have a highend header that i picked up for 400 dollars and it ended up making more power and more torque than the smsp header i had. </TD></TR></TABLE>

Just a question for you. Are you saying that the highend header which appears to be a direct copy of the SMSP header made more power than your SMSP header?

 

it has the same design, but the tubes from both the head and merge collectors have a smaller diameter, which is why it is designed to work better on 1.8l engines.

the smsp header that i had on the same motor was built for a 2.0l. motor. the high end power may have been a little better, but my stock port and pro1 cams werent making power high enough to notice.

its a lot like the differences between the rage headers. does this answer your question?

 

Yes it does, thanks

 

2oo whp, you will succeed with a good tuner