I bought a set of these Diamond Racing Pistons for my Ecotec 2.2L, but i dont know if they are forged pistons where they could take the abuse and tough...
I know that they are 8.9:1 compression ratio..
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I'm running Diamond pistons on Wiseco H-Beam rods. Not sure of what other "choices" they have, but mine are forged and built (custom) to handle 22psi+
IIRC Diamond only makes forged pistons, they are a lesser known brand but quaility parts none the less
Diamond ONLY makes forged parts.
For those who have never heard of them.....they are the brand of choice for KB Racing, aka the team of Greg Anderson and Jason Line. They be good @!#$.

I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
Do they make these pistons for 2.4 or only for 2.2
Here is a few pictures for the Diamond Racing Pistons...
You guys call it the Diamond Pistons, are you refering the same company? Diamond Racing Pistons???
http://www.diamondracing.net???
I dont know if they are FORGED or not... If they arent, like if they are just cast with a lower compression, im gonna get rid of them...
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BTW, i bought these off Snowman on here, but i dont know if they are forged... also i need to buy pins and rings for them too cuz snowman didnt have any...
If someone can point where i can get the pins and rings would be great!!!
Thanks!!!
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They are forged pistons, about the same quality as wiseco.
Also Agent Omega Wiseco does not make rods, you mean Eagle I am sure...
-Aaron
www.TurboTechRacing.com

Performance Parts For Cavalier, Sunfire, Cobalts and More!!!
Lol...yes, Eagle H-Beams. Can you tell I'm stressed this week?
those will work great. I believe DR is also what the stg2 balts use as well

-Chris
Great! I will put these in along with a set of Forged Eagle H-Bean Rods, ARP Head Studs, Cometic Head Gasket, what else should i get for my build up?
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Also, when snowman sold these pistons to me, he didnt include the Rings and Pins, i heard that i need to get them from Weisco, anyone know the part number for them?
Thanks!
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you would get them from diamond racing pistons....not wiseco
I have DR pistons in my 02 Z. I am very happy with the way the handle customers (hence my 3rd set, there were a few miscommunications). You should be very pleased with them as long as you get the correct rings and pins/retainers.
I only have to drive a short distance to get mine when I order them. I love dealing with local companies.
Edited 1 time(s). Last edited Monday, September 03, 2007 2:48 PM