piston weight

[turbo buicks]

considering reusing stock pistons in my new build. bore looks clean, no rodge as well as pistons, all on a 130k+ motor. whats the weight difference b/w trw forged and stock pistons? if not much if any ill prob reuse the stock slugs to save money as i hear they are pretty strong. btw new combo will be a 10 sec one but i hear stock pistons are still good if tuned right.

 

[trbodon21]

Stock pistons are pretty good for your 12 second everyday car, but do yourself a favor and go with a set of forged pistons. The stockers may hold up, but you never know. After a rebuild the last thing you want to do is to have to take everything apart again becasue you craked a stock piston.There are many manufacturers out there and you should be able to get a decent set for about $450-$500 if you motor is a 3.8. Also stay away from the hyper-eutectic pistons.

 

[Ormand]

Also stay away from the hyper-eutectic pistons

No exactly... Stay away from BAD pistons. Good hypers are better than bad forged, and the other way around. There is nothing wrong with hyper-eutectic aluminum as a piston material, but not all pistons use the same alloy, and not all pistons are made to the same quality. If you use the stock pistons, you won't have to re-balance, but if you go with forged or cast (hyper-eutectic or otherwise) which are more than a few grams different from stock, then you should get a balance job to go with the rebuild.

 

[bruce]

Originally posted by turbo buicks
considering reusing stock pistons in my new build. bore looks clean, no rodge as well as pistons, all on a 130k+ motor. whats the weight difference b/w trw forged and stock pistons? if not much if any ill prob reuse the stock slugs to save money as i hear they are pretty strong. btw new combo will be a 10 sec one but i hear stock pistons are still good if tuned right.

From what I've seen, if you want to reuse the stockers, you'll probably go 1/2 the distance the second time around. So if you went 130 the first time, look for around 65 the next time. There are certainly exceptions to this, but once you figure in the ones that don't last very long, the average drops way down.

I'm not a fan of TRWs. or BRCs.

Tuned Right, means exactly that. If this is your first 10 sec engine, you have two choices IMO, a cheapy to use as a mule and learning experience, or go top dollar, and hope it's right.

10 sec is where your gonna really need to have things not only right, but CORRECT, IMO.