10PSI stock will be fine, anything more need to move up
2nd that.
stick to the basic rule of 10psi on stock internals.
thats for a daily. day in day out no problems.
the internals of our hondas arent so great when it comes to handling big boost.
if you take a look of some turbo build threads here, im sure youll come along a comparison picture of the OEM conrod compared to a forged I or H beam conrod.
the width and thickness of it is so great of a difference.
the beaut of our engines.
is our cranks.
D series cranks (yes i said D) can handle 400hp+ with only a balance, and aftermarket big end bearings.
if youre going turbo, even planning to run 10 psi, i reckon change some internals while youre at it. better for the long run.
head gasket is just a gasket after all, generally speaking, and changing a compression ratio only makes your engine more tollerant to knocking or less tollerant to knocking.
Well just consider how well maintained your motor is and how good the person that tunes your car is. If the person tuning your car is good I've seen a stock b16a take 30psi and lasted probably about 25 passes on the track but safely i'd run about 13-14. if your not running a ems.
honestly man dont lower ur compression! run lower boost instead! ull thank me for it later i garentee it!
say u werent turboing it, u wouldnt lower it! why? cause by lowering the compression you will lose power! AND it will lag alot more because of this! ur better off keeping the motor as honda intended it, just only running bout 7psi like i am... that way ur only adding more power instead of trying to make up for power uve lost by lowering it... do u get me?
ITR motors can handle 9psi very well so i suggest u do that.
and make sure u get a reputable person to do the tuning
oh, and nothing is better then an OEM head gasket... if i ever blow my mugen one ill definatly go back to oem. (cause my mugen one is for higher compression) lol
run lower compression if your going to run more boost through your motor, such as 12psi +
it's safer.
using a t28bb on a standard motor is fine on 10psi, spooling with be quick and reaching full boost under 3000rpm on 10psi.
or even 10psi + you might lower the compression.
on a t28bb, just leave it on 10psi, and you should make approx 160kw atw.
depending on setup of course and tune.
lol did u read what i wrote johnny?
why run more boost just to make little gains? theres no point lowering compression just through a head gasket JUST so u can tell ur mates ur running 12psi of boost etc.. when u could possibly make the same power, on higher compression on say 7-8psi? if uwant lower compression buy a nissan motor LOL
yeah, did you read what i wrote? lol hahaha
what i'm saying in conclusion.
lower compression if your going to run more boost
but on a b18c7 standard compression with a t28bb with 10psi
you should see 160kw atw.
maybe more.
IF you want to run more boost lower the compression ratio.
lol hairy muff my friend...
im just trying to stress the point that hondas are made for high compression and thats how it should remain dont lower compression and try and make up for the power loss, leave the higher compression and run lower boost... it works out the same and will be more fun to drive for sure... if u want a lower compression honda motor, buy a VTi-R motor ot b16a im runnin about 11.4CR if i remember correctly
Originally Posted by fatboyz39
dont lower compression and try and make up for the power loss, leave the higher compression and run lower boost... it works out the same and will be more fun to drive for sure... if u want a lower compression honda motor, buy a VTi-R motor ot b16a 
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