gsr block, .25mm overbored type r spoon balanced pistons, type r shotpeened rods, type r knife edged crankshaft, b16 head, skunk2 stage2 cams, skunk2 retainers/springs, 5 angle valve job, skunk2 IM, jdm itr tranny (4.785 final drive), act heavy clutch/lightened flywheel, cylinder wall honed... those are all the engine mods... it was built solely for n/a, but ive been learning and researching as much as i can to see if turbo would be possible (obviously with changing things..) and what i would need to change.. c/r ratio is probably upwards of 12 and r/s ratio should be 1.58 (type r)... am i crazy/would this just be a dream, or would it be possible, if i were to change out the pistons and cams to go turbo...?

 

change your pistons, cams and trade me your final drive and go turbo JK, just do the firts two

stan

 

ok that's the first step lol i know a lower r/s ratio is o.k. for FI, and i would need lower compression pistons.. what specs should i look for in a cam that would go well with turbo?

forgot to mention, the engine has 110k miles on it.... all of the engine rebuild was done 1 year ago, maybe 20k miles ago..

 

I liek to stay higher in a turbo range, what I meant by higher is 10:1, higher to some and others.

get a lower lift on the cam, stock GS-R works very very well

stan

 

I would redo it completely...with a combination of high miles, stock internals and high compression, its not a good candidate for FI in my opinion...tuning will a bitch with no window for errors

 

Change the cams and just run low boost but make sure you buy some EMS of some sort with some big injectors.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MiraiZ &raquo;</TD></TR><TR><TD CLASS="quote">I would redo it completely...with a combination of high miles, stock internals and high compression, its not a good candidate for FI in my opinion...tuning will a bitch with no window for errors</TD></TR></TABLE>

im worried about the high mileage.. all that pressure on the sidewalls after 110k miles... does anyone think it would hold for very long? (5-6 lbs of boost..) as far as CR, i'd look to get new pistons.. thanks for all the replies guys

Edit: what about resleeving to take care of the high mileage? or is that just a on me since i don't know much about resleeving?

 

rebuilding and replacing worn parts + honing the cylinder walls will help the high miles part. A cr of 12 is way high, IMO...you willhave to dump fuel and retard timing like a mother until you can get it tuned...cr of 10 migh be better.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MiraiZ &raquo;</TD></TR><TR><TD CLASS="quote">rebuilding and replacing worn parts + honing the cylinder walls will help the high miles part. A cr of 12 is way high, IMO...you willhave to dump fuel and retard timing like a mother until you can get it tuned...cr of 10 migh be better.</TD></TR></TABLE>

cylinder walls were honed when everything was replaced.. crank, rods, pistons, head, everything... i dont hafta hone again, do i?? and i know i hafta lower cr, ive been hearing a lot about wiseco pistons..? but what specs for cams should i look into? ive heard lower lift is better for turbo, correct me if i'm wrong.

 

when you're replacing your pistons, chcek your cylinder walls, if they are still intact and honed are still visible, you'll be fine.

PS: I have a wiseco pistons for sale if you;re interested, 81.5mm 9.8: CR

stan

 

This is what honed cylinders plus new pistons will look like My turbo project is coming along.... It's all about the benjamin's though!




BTW - These are 9.2:1 compression.

Grr...can't seem to get damn pictures to work

 

hey thanks man.. how much you askin? keep me updated, i'm still not 100% sure if i'm going to do this, but i want to get serious about it..

 

Lol, finally! ...

I know I have a better picture of the cylinder walls.. let me try to find it for ya.

 

mm shiny

 

Lol. yup, cause it's honed out But, you should lower your compression if you plan on running turbo.

 

ok so figure i get lower compression pistons and lower lift cams, will my rods, crank, and block be able to hold all the pressure?? my r/s ratio should be 1.58 so that does put a bit of extra pressure on the sidewalls as there's more angle... it's a daily driver and i don't want it to blow up on me anytime soon

i just remembered, my hondata s200 just came in.. now i'm looking to run boost.. lol it's not installed yet, so can i buy an upgrade for it, or do i hafta sell it and buy a new hondata?

 

Lower lift cams aren't necessary (your choice though) I'm running stock ITR cams and they rock!!!

 

open deck is gonna be risky with alot of boost.

 

ehh sorry, whats open deck??

Edit: on me


Modified by lke2drvgsr at 4:16 PM 6/23/2003

 

yup, the only thing you can do is block-guard. Unless of course you want to spend a lot of money to put sleeves in.

 

ive heard lots of bad things about block guard..

 

Personally, I'd either get it sleeved or leave it as is...block guards aren't worth it and they're pretty permanant one they are in.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TraKtioN &raquo;</TD></TR><TR><TD CLASS="quote">open deck is gonna be risky with alot of boost.</TD></TR></TABLE>

what do you consider a lot of boost? im lookin for maybe 7 psi lol 110k miles on open deck is kinda harsh if im going turbo.. does anyone think it would hold?? sleeves are really pricey

 

all b-series engines are open deck! we turbocharge all of them....don't stress. but the point is....if your going to remove everything and change out the pistons....just send out your block and sleeve it......and boost more......but with all the N/A app stuff that you have jeez.....stay N/A.....well you could probably sell all that for you FI app.....good luck!

 

i dont' need excessive boost.. all i was looking to do was lower cr pistons, maybe some cams (if i need 'em) and go straight to boost... resleeving block is a lot of $, but my question was, could my block, as is - with the miles it has on it, withstand maybe 7 lbs of boost? could i put together the turbo now, and resleeve later when i got some more $? (sorry for the dumb questions )