Weight is a big thing ,the less amount of weight i have flying around the more HP i will free up..

now there are the ultra light pistons 344g can you run this light of a piton on the street

What would be the diff from a SRP flat top piston that weighs 444g to the ultra light that weighs 344g other then the weight..

could the ultra light piston take a shot of nos 100max....

thx

 

Sounds like a question for advanced tech.

 

Weight doesn't mean much until you throw piston speed into the equation. So then then question goes to... How fast are we planning to rev the thing and what kind of bang for the buck are we getting here?

If you plan to turn 7000rpm or better, the lighter pistons are a good idea IMO. They take a load off the connecting rod. Then again... ask yourself how many street engines turning ~7k break connecting rods/bolts. And also keep in mind I'm talking "lighter" but not necessarily the "Superfly" stuff.

For an NA street car, pistons in the 400g range (1.2 comp height and shorter) are just fine. You might as well go with a thinner ring set (1.2mm, 3/64 etc) and skip the gas porting if it's a street engine. If you go gas port, the cylinder bore wear goes up. If the ring isn't too thin (no nitride coatings) and the machine work is on the money, the bore will seal just fine without gas ports and a vacuum pump.

I wouldn't worry about a 100hp shot on a "midweight" piston like I described. Would not even consider it for a real lightweight though.

-Mindgame

 

Well i am thinking of 7000rpm and a street eng..

So 400g is good , and it could take a 100hp shot of nos

For an NA street car, pistons in the 400g range (1.2 comp height and shorter) are just fine. You might as well go with a thinner ring set (1.2mm, 3/64 etc) and skip the gas porting if it's a street engine. If you go gas port, the cylinder bore wear goes up. If the ring isn't too thin (no nitride coatings) and the machine work is on the money, the bore will seal just fine without gas ports and a vacuum pump.


I don't understand "gas porting"

 

http://www.circletrack.com/howto/34098/

When you get stuck on terminology, fire up that search engine. "Piston gas porting" would be a good first search.

Good luck.

-Mindgame