I've seen people discuss cracked 3B heads, even for naturally aspirated engines. If this is the case, how are people getting away adding boost and such? Is head longevity simply a matter of EGTs? I would think that total volume of heat matters too (BTUs). Surely a completely stock 3B at 550 C EGT is having an easier time (thermally speaking) than one pushing a significant amount of fuel and boost but with the same EGTs.
Another thought: It is said that an increase in boost (without altering the fuel supply) will generally lower EGTs, can this reduction in EGTs translate to lower engine temperatures or less load on the cooling system? I would think that if the engine is burning the same amount of fuel and doing the same amount of work, that the cooling system still has the same amount of work to do.
Another thought: It is said that an increase in boost (without altering the fuel supply) will generally lower EGTs, can this reduction in EGTs translate to lower engine temperatures or less load on the cooling system? I would think that if the engine is burning the same amount of fuel and doing the same amount of work, that the cooling system still has the same amount of work to do.