I wanna know how much HP can be gained with out piston, rods, cams, and head work, just plain turbo mods, intake exhaust, etc..

10hp. Who knows?

give or take some people breaking the curve and living to tell it
most stock internals run between 5-8psi, and its usually a given that sooner or later your gonna bust a ringland on the cast pistons.
if you can controll your right foot and be happy with 5-8 then fine but just start saving now for the forged internals your gonna replace the busted ones with.
once you put forged in there is effectivlly no upper boost limit (given the rest of the system is equally upgraded)

Some people have run 10 psi on their engines, but all turbos are different and the amount of air each push can be different at the same boost level.

It all comes down to the condition of the engine and the fuel setup you have.

Well fisrt of all thanxs for the reply. but I alredy knew about that i really was intrested in the horse power achived with those set up's.
and thanxs in advanced.

i don't think it's posible to get even close to 250whp on the stock spaghettioh can pistons. i ran 10psi with decent supporting mods for like 7 months before cracking 2 pistons. you could proly acheive decent #s once or twice but not daily or relaiably.

443whp. :)

Let's not forget this guy:

http://www.dsmtuners.com/forums/420a-turbo-conversion/245278-re-update-420a.html

Can that be achieved reliably? Maybe not, but the 420A's got some potential if you really wanted to push the envelope.

A guy I know just got his car tuned with a safc2 and 450cc injectors on a stock engine and made exactly 250whp on 9psi. Now all he needs is the money for when the engine goes boom.

Interesting.

Very.









Doubtful the guy on dsmtuners is making 400+ on a stock bottom end consistently. No fucking way in hell.

I raise the bullshit flag as high as I possibly can.

I've seen those threads on Tuners. I thought he had a built bottom end on the 440+whp setup. I may be wrong though. I do know that the car in those threads has posted dyno sheets and dyno runs. But i just can't remeber if it was built or not.

Originally posted by eclipserst3
i don't think it's posible to get even close to 250whp on the stock spaghettioh can pistons. i ran 10psi with decent supporting mods for like 7 months before cracking 2 pistons. you could proly acheive decent #s once or twice but not daily or relaiably.

What r the supporting mods you had? And how much HP did you get?

Shrrrraaaaaaaaa, tst, shrraaaaaaa, BANG!

That is what is going to happen to your engine.

Forgies are the way to go. $800 for the rotating parts. $100 for arp stuff, $30 for a new head gasket, $150-200 for a decking, boring and washing of the block, $50 for acl/clevite bearings and $5 for a diy mbc.

That's not bad at all.

You want the edge, Brian O'connor? You're going to pay for it one way or another.

yeah, i would hate to crack the welds on my intake mani! lol. uh, idunno how much power i made but my setup was: 30# inj. 45mm t3. 2-1/2" open dp. 2-1/4" cai. 2" ic. 10psi. i could kill stock srt's. never ran that setup on the track though. now everything has been swapped for bigger and better and soon, verry soon, i will get the ms&s. i'm so excited, hee hee! btw, if you read far into the vid. thread, a dude says the 4XX whp guys bottom end is forged.

Never put the car on the dyno, but I ran 13-16psi on a s16g for 2 years before eventually cracking a ringland on cyl #3.

That was a long time ago...

Originally posted by RyaN95i4
Never put the car on the dyno, but I ran 13-16psi on a s16g for 2 years before eventually cracking a ringland on cyl #3. That was a long time ago...

And what was your set up back then?

Originally posted by Cyexmaster

Originally posted by RyaN95i4 Never put the car on the dyno, but I ran 13-16psi on a s16g for 2 years before eventually cracking a ringland on cyl #3. That was a long time ago...

And what was your set up back then?

s16g, FMIC, sfmu and 30lb injectors tuned very rich.

After cracking the rng land, went to a forged bottom end and 8inj setup -- was running 22psi on pump gas with s16g before i decided to upgrade the turbo.

22psi on a stock ignition?

Originally posted by eclipserst3
22psi on a stock ignition?

Yes, stock ignition, stock computer. 93 octane. Ran that 22psi on the s16g for 2yrs if not longer. I did eventually have a small coolant leak through the headgasket, but it leaked out the back of the head, not into the cylinder or oil galley. Head was stock as well, save for ARP head studs torqued down to ~92 lbft


Im never easy on the car either.

That's really impresive! So you think I could make 200+ horses on stock engine? with good tunnig?

Originally posted by Cyexmaster
That's really impresive! So you think I could make 200+ horses on stock engine? with good tunnig?

Yeah sure you can. But its dangerous. Yeah, it might work great for years. Or, it might blow up the first time you push it. Like mentioned above, go crazy... but make sure you can afford to buy forged in the event you shatter a piston.

Originally posted by Cyexmaster
That's really impresive! So you think I could make 200+ horses on stock engine? with good tunnig?

The only time I ever had the car on a dyno when was when it was still an automatic and running bitch boost. The car made 200whp/200wtq on 8psi through an automatic. Wow, that was so long ago, haha.

Its been a long time since ive been on 2gNT, but old consensus was that the stock motor was capable of holding 300 crank hp, but any type of detonation at that power level would cause damage -- most often cracked ringlands on the piston. Push the stock motor at your own risk. The stock cast pistons are very brittle.

well I guess I'll keep it safe for now.. When I have the money for the internals I'll oush it to the limit to see how much can be squeezed out of the stocker! If I bust a rinf lad or something while boosting, is some boreing or something need to repair it or do i just replace the internals? thanxs in advanced~!

Originally posted by Cyexmaster
well I guess I'll keep it safe for now.. When I have the money for the internals I'll oush it to the limit to see how much can be squeezed out of the stocker! If I bust a rinf lad or something while boosting, is some boreing or something need to repair it or do i just replace the internals? thanxs in advanced~!

It depends on the condition of the cylinder walls. The cylinders will have to be honed at the very least, but if they're scored deeply you'll have to bore and get oversized pistons (not a big deal). My block was in great condition but I still opted for .020 overbore and bigger pistons.