non turbo pistons?

[Sandman817]

well i have been looking aroudn on craigslist for a 6 bolt motor that i could swap into my 99 eclipse gst. i came across one that had a few thousand miles on it, but the guy says he has the N/T pistons in it....Should i stay away from this motor??

This is part of the listing.

The block is out of a 91 GSX and was completely rebuilt by me after being cleaned up and checked at the machine shop. The motor runs strong and does not smoke at all. The block comes with 92 N/T pistons (9.0:1 compression), 1g rods, ARP head studs, ARP main studs. It has the oil pan, 90 oil filter housing (w/ AN fittings), all newer timing components, 2g poly motor mount (bracket trimmed for 6 bolt in a 2g), almost new alternator, power steering pump, AC compressor, and unorthodox racing crank pulley.

 

[ramsack]

Turbo pistons are cast, too.

 

[9!'clipseDOHC]

Turbo pistons are cast, too.

I know, I didn't say they weren't.

 

[Sandman817]

well since they are both cast they are technically as strong as eachother, but the placement of the ring lands on the turbo pistons are lower, correct?

 

[ReYnd]

The material for stock turbo and non-turbo pistons is the same, and of equal strength. But taking the design differences into account, non-turbo pistons aren't as strong. Why? Because they didn't have to be. Having ring lands higher up is an advantage, but the cost of production would be increased if they were used for production of the turbo models since the pistons would have to be made of more durable material. Now that the Evo is such a goldmine for Mitsubishi, they can afford to offer up the half-and-half pistons.

That turned into more of an economics lesson than I'd intended.