quote:

Originally posted by WHOMPWHOMP:

quote:

Originally posted by DragRaceResults:
So Bell, what does your builder think?

Got to get it apart first….but I guarantee it’s a cracked piston doing just like the last time….leaning toward the fuel being in the back with an electric pump….My argument is how would it make it 200+ runs if it was detonating…

Do you log fuel pressure or AFR?

quote:

Originally posted by SP 124X:

quote:

Originally posted by WHOMPWHOMP:

quote:

Originally posted by DragRaceResults:
So Bell, what does your builder think?

Got to get it apart first….but I guarantee it’s a cracked piston doing just like the last time….leaning toward the fuel being in the back with an electric pump….My argument is how would it make it 200+ runs if it was detonating…

Do you log fuel pressure or AFR?

I have fuel pressure

quote:

quote:

Do you log fuel pressure or AFR?

I have fuel pressure

O2 sensor and even a single EGT sensor might help show what is possibly happening… just saying

Bent pins happen most from a hydraulic incident.

Best money I ever spent when switchinmg to alky was a Inovate Mototsport digital AFR gauge

quote:

Originally posted by vetman:
Best money I ever spent when switchinmg to alky was a Inovate Mototsport digital AFR gauge

I have debated this in my mind whether it's possible or not. Mostly because I may have done it once. Broke an imput shaft mid run under a lot (for me)of boost and hit the ignition only rev limiter. In the end, the pin and the piston were destroyed. Alky combo. One would think as long as the valves are going open and closed, that the raw alky would pump out each cycle. Maybe not.