which pistons for a Garrett T3/T4 turbo kit

[LsrRStyle]

I have a '91 Plymouth Laser RS turbo FWD and i am going to get the Garrett T3/T4 turbo kit from www.diamondstarmotorsport.com and I was wondering if the stock 1g pistons could hold up to that much power, I have many other mods also I want to get mid to high 300's hp. Should I upgrade to '95 pistons? or even better the evo's?
Thanks for all your help!
Joe

 

[Bigwilly6754]

Id run you got till somethign goes.. then once it goes do the whole thing!! thats what im doing i drive a 2g gsx i just bought a fp green im gonna run that till i blow the motor then im dropping a built 6 bolt in!! thats my 2 cents!!

 

[Unreal]

Bone stock pistons have no issues on my AGP t3/t4 kit making well over 400hp.

 

[dsm_illicious]

Your stock bottom end internals should handle up to 22psi.

 

[Unreal]

Boost numbers don't mean anything. I've had this bottom end up to 32psi no issues. PSI doesn't equal power.

Stock pistons/rods should be good for 500hp. If you run 10psi or 40psi to get there doesn't really matter.

 

[BigBADGSX]

you should have absolutly no problem making well over 300hp with a stock bottom end man. But if you wanna take the cheap rout i would invest in some 95+ pistons, or if you wanna make sure you have a really nice setup, you could invest in some ross or JE's. I personally would just build the whole bottom end if you have the cash sitting around, but its all up to you.

 

[dsm_illicious]

Originally posted by Unreal
Boost numbers don't mean anything. I've had this bottom end up to 32psi no issues. PSI doesn't equal power.

PSI doesn't equal power? right, you're absolutely right. So if i run 1 psi i'll have the same amount as power as running 20psi? Geez i'll save gas and my motor, thanks for the tip. Gee why did they ever design boost controllers? What a waste...

 

[RocketBoy]

PSI does not equal power. What equals power is the amount of air you're pushing in. If there was a turbo that flowed massive amounts of air at 1psi, then yes, that is all you would need. Listen to Unreal, he knows what he's talking about.

 

[Boost Addict]

The larger the compresor housing gets, the more surface area u have to fill up with air. I agree with rocketboy on that one.

But 32 PSI, u might wanna get around to checking ur head gasket, not to mention most (note-i said MOST) turbos have lost their efficiency by then and they r only cramming in a bunch of hot air!!

 

[2-0turbo]

You guys are confusing the facts once again. PSI and CFM DO NOT MATTER. You confuse the issue when you talk pressure and CFM. Please understand that density is what drives power. With a relatively fixed displacement (2.0 liters) and relatively fixed volumetric efficiency (can be changed with cams, porting, etc.), the maximum density will create the most power. Treating air as an ideal gas and neglecting some other effects, air at 32F and 1psig PRESSURE has the same density as air at 980F and 32 PSI. So, there would be no difference in power (very simplified approach).

DENSITY, DENSITY, DENSITY is what matters!

 

[dsm_illicious]

Roite...

Anyway, I think everyones throwing too many technicalities for the simple question of whether or not LsrRStyle should upgrade the bottom end for a bigger turbo. I say it's better to be safe than sorry. So yes, get them, especially if your doing more upgrades in the future.

And I understand that psi doesn't directly correlate to hp output, i'm just keeping things on a 'generally speaking 1+1=2' basis since the origin of the first question was simple-not a turbo tech 101 course.

 

[Thalomos]

You will handle the t3/t4 kit just fine on stock bottom end.

And no psi does not equal power. What will make more power, a Green on 10psi, or a T-25 on 16psi... gee i wonder (all other factors being the same)