Just wanted to post real life experience of broken ring land so it can help others with their tuning. A lot other forums can be too much of a echo chamber of hearsay .
Afr's were around high 9s to low 10s with 450cc injectors. I was about 90% injector duty cycle at 40psi of fuel pressure. Stock timing map. Engine felt really strong and consistent. Then after a hard pull It felt down of power with a different exhaust tone. Pulled into a gas station and there was a lot of blow-by. The OEM head gasket appears to be fine with no signs of failure. Not sure how much power I was making but I only have enough fuel for between 350-375 hp. Seems low for what others have reported breaking ring lands at.
Off to build a forged bottom end now.
Only piston #2 failed the clean piston pic is how the other ones look like. No signs of detonation anywhere.
Afr's were around high 9s to low 10s with 450cc injectors. I was about 90% injector duty cycle at 40psi of fuel pressure. Stock timing map. Engine felt really strong and consistent. Then after a hard pull It felt down of power with a different exhaust tone. Pulled into a gas station and there was a lot of blow-by. The OEM head gasket appears to be fine with no signs of failure. Not sure how much power I was making but I only have enough fuel for between 350-375 hp. Seems low for what others have reported breaking ring lands at.
Off to build a forged bottom end now.
Only piston #2 failed the clean piston pic is how the other ones look like. No signs of detonation anywhere.
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