I've broken my motor on n2o (Long)
This comes as no suprise to anyone I'm sure. .060 over stock bottem end running n2o what was I thinking?!
I was trying really hard to make the ff heathcote day. My new trans had a few gremlins and had to be rebuilt again. Left me short of time but I managed to fit the new fuel setup for the n2o. Even managed to get a last minute dyno run on the Saturday morning to check everything was safe.
Ran it up several times it was making more and more power and still rich! I had to go so we left it there. On the last run the dip stick popped up and gave a little puff of smoke. Just blow by we thought, but I must have broken rings in number 8.
I had shut the bottle off so on the freeway I emptied the n2o in the line.(Read pressed the button) The van took off then made some unfamiliar noises then started blowing smoke. I pulled over check under the hood and oil out every orifice. So closed the hood and drove home on 7. I was calm, I knew this day would come, but it would have been nice to get one run down the quater man it felt strong.
Well I've pulled it down and I have not cracked the bore! I didn't even hole the piston! Ok there is a fair section of the ringlands in the sump and some broken chrome moly rings.
Gentlemen we can rebuild it! It's .060 up on it's second set of rings, what have I got to lose? I can get another piston the same. And I actually know how much n2o will hurt it, I'll just back it off a little and I'm sweet? Right?
Addicted to n2o me, pufft I could give it up anytime, honest. lol
Side bar, while checking the compression I'm up around 200psi ( except number 8, 0 psi) does this seem a little high to anyone?