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Heater core replacement


Pomorza

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Hey guys.

What is involved with replacing the heater core? Can it be done without removing the dash. At the moment my heater core is disconnected from the rest of the system as it was "leaking" according to the previous owner. I want to replace it and put in a new one as I need heat in the winter. Any tips/trick?

Secondly I have A/C in the car but am in the process of removing it. Are there differences in the heater cores of car with/without AC?

Thanks

Jan

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Jan,

You don't have to remove the dash. You will have to remove the stereo, heater controls and duct work above the stereo. Once all of this is out of the way, remove the heater core box. It comes out the passenger side. You will need a few short or angled screwdrivers. It will take a couple hours to get it removed. Becareful where you get a replacement. I bought one from the local parts store and it ended up being about 1/4 inch to wide. Good luck and let us know if you have anymore questions.

Rod

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You might also consider taking your old one to a radiator shop to be repaired. I had a tough time finding a new (not rebuilt) one 6 years ago so it might be impossible now. On a side note, I can't see living in Tucson, Az. and not wanting A/C. I hope you're not doing that just to make the car lighter as I've read so many times over the years. That's such a waste of time considering how much weight you'd actually have to remove to make a difference. Both of the old systems in my 280Z and 810 were fully functional and actually cooled quite well.

Edited by sblake01
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At the moment my heater core is disconnected from the rest of the system as it was "leaking" according to the previous owner.

Before pulling the heater core, make sure it isn't just the shut-off valve that's leaking. I though my heater core was bad because I saw water on the passenger floor, and I assumed the core leaked.

After close inspection, it was the shut-off valve that was leaking, not the heater core. Replacing the shut-off valve took me about 20 minutes.

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You might also consider taking your old one to a radiator shop to be repaired. I had a tough time finding a new (not rebuilt) one 6 years ago so it might be impossible now. On a side note, I can't see living in Tucson, Az. and not wanting A/C. I hope you're not doing that just to make the car lighter as I've read so many times over the years. That's such a waste of time considering how much weight you'd actually have to remove to make a difference. Both of the old systems in my 280Z and 810 were fully functional and actually cooled quite well.

It has nothing to do with weight reduction. To begin with the A/C system on the car isn't work. It needs to be recharged and fixed as it keeps blowing the fuse. The cost to fix is pretty high also. Secondly, I've never really used A/C in either of the cars I've owned. I just never saw the purpose of it if I can just open the window. Heat really doesn't bother me at all.

Jan

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It has nothing to do with weight reduction. To begin with the A/C system on the car isn't work. It needs to be recharged and fixed as it keeps blowing the fuse. The cost to fix is pretty high also. Secondly, I've never really used A/C in either of the cars I've owned. I just never saw the purpose of it if I can just open the window. Heat really doesn't bother me at all.

Jan

I agree with sblake's idea of taking the core to the radoator shop. New one, from venders(Nissan parts) are basically the core for pick ups in Mexico, and are slightly larger than original. You have hard time sqeeze it into the box.

Esprist

www.jdm-car-parts.com

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It has nothing to do with weight reduction. To begin with the A/C system on the car isn't work. It needs to be recharged and fixed as it keeps blowing the fuse. The cost to fix is pretty high also. Secondly, I've never really used A/C in either of the cars I've owned. I just never saw the purpose of it if I can just open the window. Heat really doesn't bother me at all.

Jan

That's cool (no pun intended!). I've often heard of people removing things from their cars for weight reduction. May be important for a race car but I just can't get to that reasoning for the street. I'm an AC tech and didn't have any problem getting the old systems to work and work rather well if I might say so. Me? I live in Southern California and heat does bother me, especially the 100+ degree summer heat we get here:angry::mad:
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I know the '77-'78 cars with factory air have a different valve which is obsolete. Zman of Washinton sells rebuilts for $150. It is difficult to remove compared to earlier cars. I got one from the junk yard and repaired the leak with sealer because the inners were still okay. Since you don't want the a/c you can use any heater valve that will adapt. The heater core comes out pretty easy without removing all the controlsand dash parts, consult the fsm.

Edited by theramz
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