Ron C. wrote:Sever detonation lifted the ring land at it's weakest point which is right where it failed. "Most" of the time it's caused by to much timing for the octane or effective compression ratio running. It also looks like you had oil migration into the combustion process which can also be a major contributor to detonation in a blown application. The detonation unseats or rattles the rings which make oil migration even worse so it goes from bad to worse in a hurry.
I would also suggest you not run the gas ported pistons on the replacement set if the blower is continued.
mmmitch588 wrote:Were the other pistons damaged near the Intake area.Detonation will usually occur around the coldest part in the cylinder, & thats what it looks like.
Engguy wrote:So is that upper portion of the cylinder discolored or is it just bad lighting?
Was it run with no coolant?
Abbottracingheads wrote:Looks like you have got too much compression for the fuel you are running. Blown alcohol engines run 10.5 to 11.5 on alcohol, not 94 octane pump gas. Looks like you need better fuel to me.
richyrich wrote:-3370lb stock suspension 67 Camaro
- Best motor only 9.64/140.77mph
- Best with 22n 20f fogger shot 9.17/147.08mph
- Chevron 94 octane only
Is this not the engine or car we are talking about?... I think someone is confused.. mainly me