I have arias piston with 8:5:1 comp. What is your opinion on this topic regarding making power and overall driving. I got these real cheap and am on a buget but if I have to change them I will if it will affect making power. I am shooting for 500whp. Thanks for all your recommendations! (Its for a Gsr engine stock bore)

 

Depending on your overall set-up, 8.5:1 compression can easily yield 500whp. It depends on where you want to make your power; pump gas or race gas. The lower compression allows you to run more psi on pump gas, but limits how much power the engine can make on race gas. I personally like 8.8:1~9:1 range, running 14-18lbs on pump gas. I like to make my power on pump gas, to me its real everyday horsepower that I can maintain by filling up at any gas station.

 

Well I would like to make alot of power on pump gas since it is a daily driver. But how much will this compression affect the whp on race gas?Will my low end driving be ****?

 

It depends on what kind of engine management you are running, as well as the turbo that you are running to answer that precisely. To achieve 500whp+ you'll need to run alot of psi to achieve your goal. Most compressors arent efficient past 30psi range that would be driveable on the street. Most engine management systems support 3bar map sensors, or 28psi maximum pressure, if you need to boost more than 28psi you'll have to go with more advanced EMS's like AEM that can support 4-5bar map sensors. Compression is a trade off with engine management and compressors.

 

I will be running the aem ems due to all the options. I have a 60-1 t3/to4s turbo stage 5 exhaust wheel .63. Jg mani, 70mm tb, 1000cc inj. and piping etc.... I yet to choose the exhaust manifold which I am almost certain will be a love fab. Does this help.? I got all the other stuff like rods etc...

 

The 60-1 stops being efficient around 26-28psi. As long as you are running a straight 3" exhaust systems with no restrictions, and good tuning your set-up should be able to support 500whp before 28psi. Equal length manifolds will aid in creating more power, as well as quicker spool. With your compression being low, the equal length will give a bit more usuable powerband by aiding in faster spool.

 

Thanks boosted hybrid for your time. You sound like you have a monster turbo'd honda? Do you mind sharing info of your setup and hp?

 

you should just chunk the turdbo and get something better suited for your needs

and besides..the 60-1 comes in efficency around 10psi, compared to say....an SC61 which comes in around 8psi or so. just food for thought

 

My dyno graph, and set-up is listed on my website. First dyno graph on page:

http://www.boosted-hybrid.com/....html

 

sorry, but I have to ask....500whp "daily driver"??......WHY?? even 300whp is barely streetable..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MiraiZ &raquo;</TD></TR><TR><TD CLASS="quote">sorry, but I have to ask....500whp "daily driver"??......WHY?? even 300whp is barely streetable..</TD></TR></TABLE>

I was thinking the same thing. Thats when things break all the time.

 

aroudn 375 seems to be the sane limitation to street hp

and that has difficulty in 4th even

 

I would have to agree. I am VERY content at 350whp level, I can beat or keep up with all the street bikes I have encounter so far.

 

I would think that a 500whp FWD car would yield negative results. Just 'cause you have a lot of HP doesn't mean its going to be fast. As a matter of fact, I would even argue that on a normal street setup (street tires, no traction bars, etc), you would get whooped by a car with only 300whp. Most guys aiming for 500whp are strip racers with full drag setup ( drag radials, gutted interior, fiberglass frontend, and traction bars)

Budget-wise and to keep driveability, I would personally aim for 300-350whp...that's more than enough for a daily driver!! but its your money dude!

 

You will not be able to make 500whp on pump gas. Inorder to achieve 500whp you will have to run on race gas. Try 200whp before you go for 500whp.

Everyone wants to come out running, why not start walking first?

 

And 500whp on stock sleeves...it won't last long-

 

boosted hybrid - i like your philosophy on running pumpgas and making big power. I have little respect for people who can only make power with race gas and/or nitrous. Neither of which you can just fill up anywhere. You really play with street bikes? that must be cool. I beat a crappy 80s cruiser bike the other day...man was he pissed it was funny when he looked over as i pulled on him.

 

Thanks guys for all your opinions. I know I wont be able to drive or put down 500whp on the street. I just want to have a dyno sheet that says that has been achieved. My second goal is running 10's in my delsol! x-ratedsi; no I wont be running stock sleeves.

 

Actually 500whp on stock sleeves will last along time. Its been proven before, jinxproof's old hatch has been running for a few years making 500+whp and raced all the time by the guys at inlinepro.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted hybrid &raquo;</TD></TR><TR><TD CLASS="quote"> jinxproof's old hatch has been running for a few years making 500+whp and raced all the time by the guys at inlinepro.</TD></TR></TABLE>

yup

 

So if you guys had a chioce to make it the best I can make it regarding pistons for a high race and pump gas setting what compression would you choose and brand? Je, CP, .......

 

I prefer to run flat top piston. JE and CP are execellent pistons but I prefer CP.