Originally Posted by zipper06
Robert, i'm probably going to get blasted for this post, but i don't care. Most of the engine builders on this site are just trying to sell their product and that's O'k, but they don't always offer the best advise. First of all you can't run a piston with over a 150 shot of nitrous, when the ring land is between .150 and .187 down from the piston top, coated or not coated, and a lot of the pistons have the top ring land raised for gas and a quick seal. It's the same with a blower motor which i run sometimes. The heat is extreme on nitrous and a blower moter. I personally like the Probe pistons because the top ring land is down .437, and good for nitrous or blower, you also can't run a 1/8" top ring, due to distorsion, and they have to be steel, due to the heat involved with nitrous.
I've built a couple nitrous motors in the last couple yrs and i used Probe pistons due to the lower ring land and they are both surviers with 250 shots.
I personally don't like nitrous, but i'm in LOVE with blown alcohol motors, and they are close too the same.
JMO
Zip.
Zip thats what i want to here. I have ran nitrous for 30 years or better with very little problems, most of them were small blocks and a ton of nos. I have allways had the ring land moved down on bb. I love to gruge race and there is races that i run that i dont run the nos.
I know a lot of guys say thats the only way I can make a motor run, i really dont care what they say because its what i like. I have seen guys run on motor for years and try nos for the first time and love it.
The coating on the pistons is what i really would like an honest opinion on. I know there is always i chance of burning a piston on a bbc because of the intake valve release in the piston is close to the ring. I also seen were the the head was coated.
I would like to also say that i built a ls5 into a ls7 with oval port heads ran trw lead sled pistons 3/8 rods two bolt block stock steel crank 620/640 solid lift cam and put 250 on plate and put 350 passes on her with out one problem and every pass was on the button. The car was a 69 ss chevelle that i ran nmca 1991 9.40 at 3810lbs with out me all factory car. To me racing is all about having fun nomatter what you have (no rice burners) so each to there on as long as your having fun!