Can stock 1g pistons hold 450whp?????

[91gvr4gsr]

ok i was just reading and im hearing stock 6 bolt rods can handle about 450whp and thats just were i want to be at .....but now i want to find out if the stock pistons will hold safely at that hp... if not will aftermarket pistons fit stock 6 bolt rods??/

 

[talonDSMerr]

Stock pistons aren't as efficient to that power level, their compression ratio is only 7.8:1, although I'm sure they can handle that kind of power. If you have a stock 6 bolt right now, I would just run the stock motor as far as I can and when something gives, build the engine then, since either way you'll be building the engine whether you do it now or later. It'd be better to run the engine you have now til it's done and use the money you save now on other supporting mods. Just my 2 cents though!

 

[91gvr4gsr]

Stock pistons aren't as efficient to that power level, their compression ratio is only 7.8:1, although I'm sure they can handle that kind of power. If you have a stock 6 bolt right now, I would just run the stock motor as far as I can and when something gives, build the engine then, since either way you'll be building the engine whether you do it now or later. It'd be better to run the engine you have now til it's done and use the money you save now on other supporting mods. Just my 2 cents though!

i have to take every thing out of my block because the ear on it cracked so im getting a new block but the pistons and rods look fresh so if they will handle at leat 400whp for a while ill just rebuild the new block with those rods but if not i will wait a little longer and get some aftermarket pistons and rods

 

[snakeyes711]

I'd be more worried about the rods, or crank.

 

[talonDSMerr]

1g rods and crank are both good for well over 450whp. A stock rebuild is cheaper, but if you have the money, you mind as well go balls out while your in there.

 

[niddydsm]

The rods can hold up to 500hp and crank will hold up as well so to answer your question of 450hp yeah the internals will hold up if you tune right

 

[Dserge]

It is all in the tune man all in the tune.

 

[2gGSX]

Of the stock components, the 1g rods are stronger, not the pistons. As far as the stock crank goes, the fastest people still use them so they must hold some decent power. In the end, it generally does come down to how well you tune though.

 

[karl GSX]

The rods can hold up to 500hp and crank will hold up as well so to answer your question of 450hp yeah the internals will hold up if you tune right

i have a buschur stage 2 block and all thats done is stock 6 bolt rods and crank with 2g pistons and i have had it 4 a year making 475 awhp and i drive the car every day to work and every where else and keep in mind the car runs 11.50. would go faster but still on stock trans. but yes a stock block will hold that 4 a lil bit.

 

[Nihad]

The crank and the block are the strongest parts inside the 6bolt...

 

[Winglessflight]

When it comes down too it, yes, the internals can handle 450 whp. But were they designed for that? A resounding 'NO'. You can make 450 whp, or maybe even 550+ whp on your bottom end, but your margin for error is a whole lot slimmer. All it could take is a hot day, pump gas, a heat soaked intercooler and just enough timing for just enough detonation to occur to burn a hole in your piston, or send a stock rod through your newly acquired block. I'd just spend the money and do it once. The chances of overbuilt aftermarket parts withstanding that scenario are a whole lot better.

 

[BkzProblem]

A wise choice would be stock rods with 8.5:1 wiseco pistons or whatever piston of your choice.... or you can get piston/ rod combos for as cheap as $700.... You will need a very good tune if you want to make 450 on stock components....

 

[91gvr4gsr]

were can i get 2g pistons from

 

[Colt4G63 also]

I would say that you want at least 2g pistons and a good tune to do what you want reliably. The ring landings on 1g pistons have been known to shear off. Keep in mind you'll need to get your rods machined to accept larger wrist pins. You could certainly get 2g pistons from Mitsubishi, but are they worth the cost to buy them and have the rods machined? You may as well get a set of aftermarket forged pistons that use the same size wrist pin as you have already.

 

[dsm-onster]

^^^How much thicker are 2g piston ringlands than 1g? How is the 2g piston designed differently other than having a shallower dish (raised compression).

Not all 1g rods are the same. 6bolt rods are stronger. There are plenty of 7bolt 1g cars out there, all though the OP has a car that originally came with a 6bolt.

600+whp Stock bottom end GSX!

 

[nlzn]

Stock pistons aren't as efficient to that power level, their compression ratio is only 7.8:1, although I'm sure they can handle that kind of power. If you have a stock 6 bolt right now, I would just run the stock motor as far as I can and when something gives, build the engine then, since either way you'll be building the engine whether you do it now or later. It'd be better to run the engine you have now til it's done and use the money you save now on other supporting mods. Just my 2 cents though!

Don't take this personally but this has the possibility for ignorance all over it, not to mention the possibility of having to spend more time and more money. (ya.. the the rod that got thrown and created that little hole on the block isn't really repairable.)

When it comes down to it you are either one of two type the people:

1: You do things the right way and build for reliability if you are doing big upgrades
2: You don't care about your 4g63, quality or your craftmanship and you gradually destroy your car and repuation from lack of the above.

Goodluck in what you decide to do

 

[Colt4G63 also]

^^^How much thicker are 2g piston ringlands than 1g? How is the 2g piston designed differently other than having a shallower dish (raised compression).

I have no idea how I know that, I read it on DSMtuners forums:
http://www.dsmtuners.com/forums/bolt-tech/103731-differences-between-1g-2g-pistons.html

and here:
Need Opinions.....2g pistons on 1g rods? Or go with FORGED?? - DSM Forums: Mitsubishi Eclipse, Plymouth Laser, and Eagle Talon Forum: DSMtalk.com

I can't find it now, but I'm pretty sure I saw a picture of 1 and 2g pistons side by side somewhere, and the guy was comparing the thickness of the 2g piston ring landing to the broken ring landings on his 1g pistons. That's not to say his tune wasn't the culprit.

 

[dsm-onster]

I know the 1g n/t ringlands are not thick. But I was under the impression that 2g ringlands and 1g ringlands are the same thickness, from the top of the piston to the ringland atleast. I'm not doubting that you read that somewhere. So can someone prove me wrong? I'd like to have a better set of cheap pistons to go with my stock 6bolt build. It would be nice since I have cracked ringlands frequently (my tuning could be the problem there too).

 

[Colt4G63 also]

I mean the material between the compression rings is supposed to be thicker, and if I recall correctly, the material below the upper compression ring too.

I knew they have a diferent compression ratio too, but I was always under the impression that the main reason people use the 2g pistons was for the added durability.

I reasearched the whole thing like a madman before I did my build, and finally said, "the hell with it" and bought CP 9:1 pistons and Eagle-H rods. Done!

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[BkzProblem]

2g pistons are strong but I don't think that that used 2g pistons will be safe for a 450 awd tune.... and for the price of new 2g pistons, you can just go forged.....

 

[UGOT8UP]

The reason you want to go with a 7bolt piston is because of the higher compression, more streetable low end torque when not in boost and more power at the same psi because of the higher cylinder pressures.

 

[blownturbotsi]

2g pistons are strong but I don't think that that used 2g pistons will be safe for a 450 awd tune.... and for the price of new 2g pistons, you can just go forged.....

I know of a person that has ~580awhp actually on 2g pistons/1g rod combo. It can happen.

 

[91gvr4gsr]

I know of a person that has ~580awhp actually on 2g pistons/1g rod combo. It can happen.

well im going with that combo hope i can get 400whp out of it on my 20g turbo

 

[91gvr4gsr]

ok 2g pistons it is til i can afford my stroker motor

 

[ryanman]

I've ran a 490whp 1g rod/2g piston car for several years, never had an issue with it and beat on it daily.