Posted by Dan H on 4/29/2008, 1:51:25, in reply to "Re: heater core"
76.91.229.118
Randy was the one that brought up the bubbles not me. Give credit were it's due. And he is right on some cars and trucks.
I have a lot of cars and trucks with the core higher then the radiator. My Abarth has the radiator mounted under the bumper. All of my Triumphs and Healeys are at least 8 inches higher then the radiator as well as many other trucks and FC's. The funny thing is there is no purge tank on most. If your system is correct it works. You do have to fill the system while running and hot with the thermostat open. On British cars there is a turn off valve for the heater core that helps in the filling.
Part is the system. It has to be large enough. But the other end is the octane on original cars. Higher octane is a cooler motor. We now have cXXp gas. But when we had good old high octane leaded fuel they ran great.
I live in Los Angeles. We have high heat. All of my motors are original not new crate engines. I either use high octane leaded race fuel mixed with pump gas if I have original valve seats or add octane to the pump gas for hardened seat motors.
I don't even want to get into what the new low sulfur diesel fuel does to an injector pump without a treatment added on my Cerlist.
--Previous Message--
: The Fan pushing air around the heater fins,
: that have water in them, that is pumped by
: the water pump, is moving that warmed air,
: regardless of where the radiator is mounted,
: as long as the engine is running at
: operating temperature, the heater cores will
: have the water that is in the motor, on FCs
: they are similar to some older large Cab
: over engine Semi trucks or a newer Corvette,
: they do have heaters that work. I agree with
: Dan, to purge the air bubbles, the puke tank
: or a vent plug need to be higher, look at
: your FC, look at where your radiator and
: heater is and look at at the elevation of
: where you have your radiator cap on your
: expansion tank.
:
: --Previous Message--
: Yes and no. It's best to be below the
: expansion tank, not radiator, to avoid a
: "bubble" in the cooling system.
: The bubble can cause overheating ... already
: a common problem. If you are looking at
: "Red Dot" heaters, one of the more
: common ones, they have vent valves available
: to compensate.
:
:
: --Previous Message--
: Who ever told you the core had to be lower
: then the radiator was correct. I also have
: ocean front property for sale in Arizona.
:
: All FC heater cores are higher then the
: radiator. Though not the best heaters ever
: made they do work as all heater cores
: installed above the radiator. BTW, most are.
:
: --Previous Message--
: I am instaling an after market heater and
: was
: told the core has to be no higher than the
: top of the radiator to get any heat .Is this
: true?
:
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