Poopy power, poor piston performance?
Posted: Thu Sep 16, 2004 7:33 am
Ok, for those who didn't know it, I damaged the top of #4 piston and destroyed the ring lands of said piston. I did damage/scratch the cylinder wall, but nothing close to disasterous. I did this by running too much boost and too much nitrous combined with no aftermarket fuel enhancement and no timing management. This was done on a NA 1990 2.2 that had just had new rings and rebuilt heads on it. I was then branded with the word "idiot" on my forehead. I was greedy and impatient.
I replaced the pistons with a brand called "Rock" and the rings with a quality japanese brand (cant remember the name). Absolutely no problems when I finally restarted the motor. Runs and idles like a dream, maybe a weird dream, but a dream none the less.
But....... I have about 225 miles on this engine so far. I am not hammering on the engine at all and have yet to hit 5000+ rpm. But when I do floor it, there is a nice smooth power but it feels like shit compared to my old engine. There is NO punch now. Car can easily go fast, but not accelerate fast. When running up to 80 in 5th, the car doesnt complain in the least, no stuttering just no oomph.
My question is, could I have gotten pistons that are lower compression that OEM stock pistons? So lets say my compression ratio drops from NA compression (which is what 9.5-1 9-1?) to lower, somewhat nearer to turbo 2.2 compression ratio. Would this rob power but still run well?
Thanks.
I replaced the pistons with a brand called "Rock" and the rings with a quality japanese brand (cant remember the name). Absolutely no problems when I finally restarted the motor. Runs and idles like a dream, maybe a weird dream, but a dream none the less.
But....... I have about 225 miles on this engine so far. I am not hammering on the engine at all and have yet to hit 5000+ rpm. But when I do floor it, there is a nice smooth power but it feels like shit compared to my old engine. There is NO punch now. Car can easily go fast, but not accelerate fast. When running up to 80 in 5th, the car doesnt complain in the least, no stuttering just no oomph.
My question is, could I have gotten pistons that are lower compression that OEM stock pistons? So lets say my compression ratio drops from NA compression (which is what 9.5-1 9-1?) to lower, somewhat nearer to turbo 2.2 compression ratio. Would this rob power but still run well?
Thanks.