Originally Posted By pittsburghracer
Do you think the failure to regap the rings played into this too Monte with the 2 stage 300 hp hit? I would think with it being a used engine that itself would open the ring gaps some
Not likely. The motor made 500 hp on the hose. Would you think a 500hp N/A motor needed way more gap than a 300hp motor?.......NO. They just strictly missed the timing and it was on cylinder 2. Number 2 is ALWAYS the first problem child to raise it's hand on most motors. He never really explained how they were coming up with their timing numbers, but if he was trying to apply some "formula" per HP, that simply doesn't work.

On a side note, I found some of David's comments on nitrous and tuning familiar. We have had several conversations over the years about nitrous and tuning. Sounded like he was reading from my cliff notes..........LOL!!!

Chad at Bangshift did a somewhat similar test a few years ago with a stock bottom end motor, but it was a 350. His test was jetting. He utilized the SAME nitrous jet for all pulls. But on the fuel side, went from "old" NOS chart jet, to square, to what we suggest now and finally to one of my "race" tunes. I coached him on timing for each change and there was a 150hp swing from first to last pull, with SAME nitrous jet. That motor made a good bit over 600hp and didn't kill any pistons or push a head gasket out. Chad finally quit as he didn't really want to break it and thought the power level was too close to breaking the crank or a rod.