1g pistons or 2g pistons

[Whiteshadow]

Im rebuilding a 6 bolt motor and its taking the place of my super powerful 1.8...my question is should i just replace the stock 1g pistons or should i put 2g pistons on the 1g big rods, which i already have rings for....are 2g pistons worth the money to have them machined and fitted compared to the 1g's in terms of hp? I dont plan on going over 350hp so i know im sticking with the 1g big rods for now

 

[Enigma_Man]

If you're only planning on 350-400 horsepower or so, I'd go with whatever's cheaper. I have 2g pistons in my car, it's fairly stock otherwise, and I don't really notice any differences than from when it had the stock pistons.

Basically, unless you're really working on a super high performance car, go with whatever's cheaper and/or stronger, and both 1g an 2g pistons are supposedly similar in strength.

-Jesse

 

[greyforestgst]

2g pistons > 1g pistons

 

[slowpokin699]

well, it all depends....easier to tune with lower compression and high boost than with higher compression and high boost

 

[Nomad666]

I'm going with Ross street pistons so I dont have to machine anything for it to fit(I think) and setting the CR to 8.7:1(EVO). Turbotrix sells them for a good price.
http://www.turbotrix.com/parts/engine.shtml

 

[WhatsADSM]

Honestly I would run the 2g pistons with metal headgasket, so that the compression comes down a bit from 8.5:1. Right now my motor is around 8.5:1 and I dont even like tuning very much on higher boost levels.

From dealing with DSMs anywhere from 7.5:1 to around 10:1 (it cranked out 275 psi in a compression check... dont ask) in general the lower compression always seemed to be alot better mannered in the way of knock and you could always squeeze a little more boost out of the lower compression motor.

In any case if you are only looking for 350-400 either choice would be okay. But my suggestions is the 1g big rod 2g piston combo which has been proven time and time again =]

Good luck