if your going to be rebuilding it why not just replace them while its all apart?

Many folks have pushed a lot more than 8lbs of boost on hypereutectic pistons myself included

 

I have done it but when it went boom it cost me more than I really wanted it to 22psi on a 70mm Turbonetics unit it took the block cylinder heads and turbo with it however it is live for almost 2 years 98 explorer 5.0 from pull a part $225 if its a budget build is there any way you can get around to replacing the pistons I think if that's all you want to do with it that you will be very happy but if in the future you want more it will always be in the back of your mind

 

Hmm, I think running 22 psi was a little much to ask out of ANY component from a junkyard motor.

Hypereutectic pistons will work great, as long as the tune is good. They just don't react well to being abused. Forged is more tolerant.

 

Been running my stock 93 pistons with 6-7lbs. boost for 3 seasons now, no issues just make sure your tune/a/f ratios are safe (just a weekend cruiser).
Just upgraded my s/c should put out around 10lbs. still need to tune it when the weather warms up.

 

Yes!!!

 

I'm running stock hyper pistons in my boosted 351W (96' roller motor) now that peaks at about 13lbs. As said, it's all in the tune. Detonation will eat up forged pistons so hypers will go quick.

 

I ran 15psi with hyper pistons and a vortech s trim with no issues

 

Thanks for the responses.

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