Antifreeze?
#21
Le Mans Master
Another vote for Zerex G-05. I have been using it for probably at least 10 years between my small block and big block. Works great.
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Aggitated Monkey (08-25-2016)
#22
Pro
http://www.google.com/url?sa=t&rct=j...W0uIzrr1VNZ76A
http://www.google.com/url?sa=t&rct=j...POnX-unIvgPmFQ
For those who want more than anecdotal evidence.
http://www.google.com/url?sa=t&rct=j...POnX-unIvgPmFQ
For those who want more than anecdotal evidence.
#23
Pro
Engine compartment heat may be way too much for hood paint on a very hot day, IF you have uncoated headers and poor airflow through the engine compartment.
If the coolant is "boiling in the heads", then the pressure inside the cooling system had increased to the point that the pressure cap would be relieving itself. If it did not, there was no internal boiling.
My take is that your engine compartment just got to higher than 300*F (but not the coolant).
If the coolant is "boiling in the heads", then the pressure inside the cooling system had increased to the point that the pressure cap would be relieving itself. If it did not, there was no internal boiling.
My take is that your engine compartment just got to higher than 300*F (but not the coolant).
#24
Race Director
Member Since: Mar 2003
Location: Eustis ( Area 51 Bat Cave ) Fl
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http://www.norosion.com/evanstest.htm
Other info,
99% of shark owners love the 50/50 pre mixed as recommended by top end radiator manufactures like Dewitts...
Other info,
99% of shark owners love the 50/50 pre mixed as recommended by top end radiator manufactures like Dewitts...
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Aggitated Monkey (08-25-2016)
#25
Team Owner
If engine had a thermostat and pump and radiator were sized appropriately and compatible with each other, there should not have been any boiling in the heads. Might there be some kind of mismatch between cooling port holes on heads/block/gaskets that might limit cooling flow? Is there a suitable mix of water & antifreeze to elevate boiling point as much as possible? Could the pressure cap be defective and not allowing pressure to build up to rated pressure before dumping?
If you have a hi-flo water pump on the engine, it could be cavitating and allowing steam to form in the coolant. That would surely mess with the system.
If you have a hi-flo water pump on the engine, it could be cavitating and allowing steam to form in the coolant. That would surely mess with the system.
#26
Pro
http://www.norosion.com/evanstest.htm
Other info,
99% of shark owners love the 50/50 pre mixed as recommended by top end radiator manufactures like Dewitts...
Other info,
99% of shark owners love the 50/50 pre mixed as recommended by top end radiator manufactures like Dewitts...
It does not surprise me that Norosion found their product to be superior to Evans. I have not experienced the increased temps, increased fan running, increased octane requirements and loss of power the Norosion study claims.
DeWitts' will not tell my why Evans voids their warranty. However, Evans has it's own warranty covering water pump, thermostat, hoses and radiator for as long as you own the vehicle.
I don't mind being in the top 1% of Corvette owners.....
Last edited by lurch59; 08-26-2016 at 01:51 PM. Reason: addition for clarity
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1974CorvetteJimCr (08-26-2016)
#27
Pro
If engine had a thermostat and pump and radiator were sized appropriately and compatible with each other, there should not have been any boiling in the heads. Might there be some kind of mismatch between cooling port holes on heads/block/gaskets that might limit cooling flow? Is there a suitable mix of water & antifreeze to elevate boiling point as much as possible? Could the pressure cap be defective and not allowing pressure to build up to rated pressure before dumping?
If you have a hi-flo water pump on the engine, it could be cavitating and allowing steam to form in the coolant. That would surely mess with the system.
If you have a hi-flo water pump on the engine, it could be cavitating and allowing steam to form in the coolant. That would surely mess with the system.
The following users liked this post:
1974CorvetteJimCr (08-26-2016)