Prechamber Mod "Flame" Front
Prechamber Mod "Flame" Front
(11-27-2015, 11:21 PM)raysorenson It's most likely the head cracked when the cooling system boiled.
This is the way I see it. Heat of combustion goes 3 ways. Out the exhaust, into mechanical energy to move the piston and into the cooling system. Advancing the timing or increasing the speed of the combustion event results in lower EGT's, which means the heat is going in 1 or both of the other directions. Since everyone who opens up the PC's say there's a power/torque benefit, it obviously raises BSFC, which means some of the heat removed from the exhaust is going to pushing the piston down. It would be dumb to think none of that heat goes into the cooling system too. That's all I'm saying. It may not be the main reason the cooling system boiled, but it didn't help.
(11-27-2015, 11:21 PM)raysorenson It's most likely the head cracked when the cooling system boiled.
This is the way I see it. Heat of combustion goes 3 ways. Out the exhaust, into mechanical energy to move the piston and into the cooling system. Advancing the timing or increasing the speed of the combustion event results in lower EGT's, which means the heat is going in 1 or both of the other directions. Since everyone who opens up the PC's say there's a power/torque benefit, it obviously raises BSFC, which means some of the heat removed from the exhaust is going to pushing the piston down. It would be dumb to think none of that heat goes into the cooling system too. That's all I'm saying. It may not be the main reason the cooling system boiled, but it didn't help.