i have a jackson racing super charger on my gsr running at 10 psi. a month ago my engine started to smoke and i got an advice that i should rebuild and the smoking problem was from the piston rings. i got a good deal on arias forged 12:5 compression, if i rebuild the buttom end would i be able to run that compression ratio and the 10 psi with boost with no problem?

 

U should learn about cars if ur gonna mod one..Honestly thats one of the dumbest questions i read on H-T.thats why im posting back to u..

Lets see..Ur stock compression is 10:1..U basically fucked up ur engine by blowing ur rings at 10psi..And ur asking if u UP your compresssion if it will run fine at the same boost??LMAO..12:5 is way to high for the SC...

On forced induction u want lower compression pistons for it to run safer..

Do research b4 modding a car,dont just slap on parts that u have no clue about

 

or u can just sell ur supercharger to me...

 

You might want to do some searching on this subject.

You can run boost on a high compression motor but it's all in the tuning and quality of the fuel you run to avoid detonation.

Good luck!

 

While you have it torn apart, carefully consider your engine management.

 

Wtf is 12:5 mean. If it was a compression ratio, wouldnt it be 12:1? Help me if im wrong. Or is it supposed to be 12.5:1?

 

He probably means 12.5:1

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94DOHCGsr &raquo;</TD></TR><TR><TD CLASS="quote">12.5:1?</TD></TR></TABLE>
You can't even run a NA setup on pump gas with that CR.

 

i am new at this so please try to understand. like i mention the new piston was a very good deal just needed some advice from you all the "tech"


Modified by gvc_muneca at 9:35 PM 9/30/2005

 

the highest you are going to want to run is 10:1
better choice if you wanna boost higher is 9:1
do your reearch in the forced induction forum, lots of good info to be searched. I have done quite a bit of reading over in that section.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fergy016 &raquo;</TD></TR><TR><TD CLASS="quote">the highest you are going to want to run is 10:1</TD></TR></TABLE>

10.6:1 stock ITR compression runs 10psi reliably when properly tuned.

 

so for a daily driver, run my jacksonracing s/c at 10 psi . comperssion of 10:1 forged piston
is safe

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .swanny &raquo;</TD></TR><TR><TD CLASS="quote">You can't even run a NA setup on pump gas with that CR.</TD></TR></TABLE>

With good tuning you can.

 

My personal opinion for what it's worth. I have a supercharged integra running 10psi. Get some good forged pistons about 10:1 and run water/methanol injection. If the tune is good you'll run 12's all day long reliably and it will drive like a stock teg.

 

I wouldnt run any lower than ~10:1 with the JRSC. Youre going to need all the power per PSI you can get, as you will be limited by your supercharger, not by your motor.

 

ok now that i got the compression . what size of piston to git the most power ?while keeping it safe for a daily driver ,an tell me about sleeves, an is my JRSC
limited at just 10 psi?

 

No need for sleeves.

Without modification to the blower, youre going to start seeing ridiculously high IATs probably around ~12 PSI. Also at that point youre spinning the blower @ a high speed that could decrease its life significantly.

84mm is a nice common size with lots of options. Bigger is better.