360 LA turbo exhaust question
Updates:
So I tore the engine down.... Number 2 piston was completely trashed. Skirt was cracked and so was the entire pistone. Definitely from detonation like suggested above. Number 6, 7, 8 had cracks in the ring lands as well. The cylinder wall on number 2 is cracked in 2 spots...block is junk.
Picked up another engine to do a quick hone and throw together with new bearings and rings. I CCd the block and heads. I'll be rite at 8.5:1. I will be controlling timing with the computer this time around as well using a new MSD billet dizzy.
I completely failed to realize my timming was way to much with the rush of getting it built in time for my trip. My total advance was around 33-34.... lol. Live and learn and like they say, the first engine you add a turbo to will not last long.
With the computer able to control timing, I'll be pulling timing as boost goes up. Also, I can have it pull timing when the intake air temps go up. Another feature I like is I can have it protect against over boost by cutting fuel and spark together.
Updates:
So I tore the engine down.... Number 2 piston was completely trashed. Skirt was cracked and so was the entire pistone. Definitely from detonation like suggested above. Number 6, 7, 8 had cracks in the ring lands as well. The cylinder wall on number 2 is cracked in 2 spots...block is junk.
Picked up another engine to do a quick hone and throw together with new bearings and rings. I CCd the block and heads. I'll be rite at 8.5:1. I will be controlling timing with the computer this time around as well using a new MSD billet dizzy.
I completely failed to realize my timming was way to much with the rush of getting it built in time for my trip. My total advance was around 33-34.... lol. Live and learn and like they say, the first engine you add a turbo to will not last long.
With the computer able to control timing, I'll be pulling timing as boost goes up. Also, I can have it pull timing when the intake air temps go up. Another feature I like is I can have it protect against over boost by cutting fuel and spark together.
