I plugged both of the heater core hoses. Is that OK? All I have is in from the radiator and out to the radiator.

as long as they don't leak. they have no effect on cooling the engine.....no harm in plug hoses or hooking together with a splicer pipe.

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Mark
In the Great Northwest!

quote they have no effect on cooling the engine

Really? You can gain about 10 to 20% by just turning the heater up on high and running the blower, it is not plesant, but it will cool off a hot car faster than anything else you can do. Larry

quote Originally posted by Merlinhaggard: I plugged both of the heater core hoses. Is that OK? All I have is in from the radiator and out to the radiator.

U don't plan on using ur heater?

I was not addressing the efficiency of the heater core removal, rather the hazard to the system. Lets take a pole....who drives with the heater on full blast (except in the winter).....to cool the engine......(well maybe Los Angeles Freeway parking).....taking out the thermostat would have a greater cooling effect and comfort level I would think.

I was think along the lines that the heater core was leaking and rather than run the system at full blast and deal with a constant drip on the passenger side carpet. disconnect the hoses and plug them until it can be fixed........but hey.

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Mark
In the Great Northwest!

[This message has been edited by NW-Fiero (edited 04-28-2014).]

It is my understanding that they should not be plugged but conntected together, essentially bypassing the heater core. But I guess it really depends on what year. 86 and earlier uses the return of the heater core to complete the coolant flow.