Whats the derence between an unpressurized system that boils at 223'F and a pressurized system that boiles at 260+'F?
Nucleate boiling.
Just because the temperature guage says 200'F or 220'F doesnt mean that is the hottest part of the engine. In side the water jacket inside the heads surfaces around the combustion chamber and exhaust port routinely hit 250'F and can easily climb to 280'F.
Then this can happen:
And then your cylinder head cracks.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
Last edited by oil pan 4; 03-24-2014 at 11:54 AM..
Reason: more and then
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