Heater core bypass

[hi pinion]

Theoreticly, can a guy bypass a heater core, and loop the lines, together, while awating parts for the heater core install? Or would that hurt anything? Someone told me to just loop the lines, until my new heater core parts get in.Thanks guys , jake

 

[big83chevy4x4]

yep, do it all the time here in the SUMMER.

 

[darkshadow]

they are different sizes so that might interfer.

i had my core wired up under the hood when swaping over to non ac

 

[big83chevy4x4]

oh, i forgot about that.

seems to me i streched the little hose over the big fitting, then just cut that little bit off once i hooked it back up.

 

[hi pinion]

Thanks guys, i have an array of copper fittings to loop the 2, so that wont be a problem, later jake

 

[R72K5]

yep no big deal, or install water pipe plug fittings in intake and waterpump

or maybe you have port on radiator tank instead of on water pump

hmm

 

[hi pinion]

It was just a general question about bypassing the heater core (cough) (furd) cough....

 

[rjfguitar]

Still working on it huh....

Someone told me to just loop the lines, until my new heater core parts get in.

So now you are doubting my advise? Napa sells a fitting that can go from one size hose to the other. I have a coupling do bobber mating the 1/2" inlet to the 3/4" outlet on the heater core. For some reason if I plumb in my heater core my engine overheats.

 

[88sub4x4]

For some reason if I plumb in my heater core my engine overheats.

Have you checked to make sure the heater core is not plugged/clogged?

 

[mikey_d05]

Someone correct me if I'm wrong here but a heater core is basically a second, albeit much smaller, radiator that vents into the passenger compartment. If your truck overheats with the heater core plumbed in, it's almost certainly plugged or obstructing flow of coolant somehow.

 

[RustBuket]

That sounds logical to me. And yes you're right about the "mini radiator" theory.

 

[Muddytazz]

Someone correct me if I'm wrong here but a heater core is basically a second, albeit much smaller, radiator that vents into the passenger compartment. If your truck overheats with the heater core plumbed in, it's almost certainly plugged or obstructing flow of coolant somehow.

Yes it is basically a second rad, but you CAN have a plugged heat core and NOT have your engine overheat

 

[rjfguitar]

Have you checked to make sure the heater core is not plugged/clogged?

Nope, it's clear and clean. It is probably not worth discussing because I made numerous threads about it months ago when I was trying to get it to not overheat. No one could figure it out pretty much because actually it doesn't overheat....it screws up the flow of the coolant somehow because the guage will jump up to 260 in about 3 minutes, shut the engine down, start it up 30 seconds later and it reads 170 again. It is like the coolant flow stops for some reason as the pressure builds in the cooling system, but when the engine shuts down it releases the pressure and the coolant can flow freely until the pressure builds back up after a minute or so of the engine running again. I originally thought the air from the heater core was being pushed into the engine as it fills with coolant so I primed the heater core first one time, didn't make one bit of difference. That is the best I have come up with.

 

[hi pinion]

Excuse me Bobby, but, this isnt about you, and YOUR truck overheating, its my thread, and my heater core bypass thread, NOT yours, so butt out.What do you think this is anyway? A public forum? j/k , later, jacob

 

[rjfguitar]

I'll mow over your topic whenever I feel the need, punk. SO did you get the lines plumbed together? Pinhead.

 

[dirtwarrior17]

diggin through the thread graveyard

If you complety disconect the heater core and block off the intake hose from the radiator it will be fine. Won't overheat.

 

[rjfguitar]

If you complety disconect the heater core and block off the intake hose from the radiator it will be fine. Won't overheat.

Um, yeah. It's been that way for 2 years.