VetteRed1965

Does anyone know an easy way to replace a non A/C heater core
on a 65. Any pictures ?

MiguelsC2

Theres only one way. The right way.

I would refer you to the AIM manual or the Corvette Shop manual.

It's neither hard or easy. Just laborious. Be glad you don't have a/c.

62Jeff

This should help

http://forums.corvetteforum.com/c1-a...e-removal.html

65 Pro Vette

If you buy a new heater core make sure check the 5/8 and the 3/4 pipes see that they are bent the exact way the original are, like most repo junk they are bent wrong and the core is most times out of shape and dose not fit back into the heater box. Check the date code on yours to make sure you are matching an original. If your core is roted there is not much you can do but replace it, if a tube is loose a good shop can make it stronger then new.

Hitch

Remove the fan motor, remove the heater hoses, remove the five speed nuts from the outer box in then engine bay, remove the outer heater box, remove the inner box. Replace the heater core and reverse..

Dave

kskid

Really, the easy way to replace, is to pay someone to do it.

66since71

The shop manual process gets it done. It's simple, it just takes time. I did mine again this last Spring (previous time was 1975).

If I had it to do over, I would not have replaced the gaskets on the firewall (inner and outer). They were in good shape and had impressions from the housings that would have served to "index" the housings to the original position. They can shift up to an 1/8 or 1/4" and make fitting the heater outlet and console sides a PIA

Dan Hampton

If it is leaking, try some AlumAseal before tearing into that project. $5.00 may just save you a whole lot of time and trouble.

VetteRed1965

I put on new heater hoses last week. I had to wiggle them to get them off. Might have loosen a fitting.

Thanks for all the help. This forum is great !

VetteRed1965

Thx Jeff

Dan Hampton

Just to be clear, the reason for the proposed replacement is what? Leaking into the interior on your floor mats, or fluid leaking and trapped in the unit giving your interior a sauna or just the smell of A/F in the interior?

Or from your most recent post, you fear that you cracked the inlet to the heater core when replacing hoses?

JohnZ

Don't EVER "wiggle" them off - that's what fractures the solder joints at the end tank; cut the hoses lengthwise where they go on the nipples and "peel" them off carefully.

warrenmj

Instructions sent via e-mail.

TheSaint

Where do you buy a a new heather core(no AC)that is guaranteed to fit?

rongold

And, when you put the hoses back on, coat the core nipples and the inside of the hoses with silicone dielectric grease--They'll never stick again.

Donald #31176

In your situation its best to remove the core and take it to a radiator shop and have them resolder new core material to the ends.

MikeM

I bought a new one from NAPA 4-5 years ago. It fit fine but I think I remember it didn't mount exactly the same. It lasted about 2 years and started to leak. A bottle of Stop Leak took care of that.

MiguelsC2

Vendors have them. Heres one from LICS

http://www.parts123.com/parts123/yb....Z5Z5Z50000370a

VetteRed1965

I was afraid of that. On the good side, I put in a bypass and what a difference in temps inside . Someone also said it was a good time to replace the radio speaker too. Maybe time to send out the radio.
Thanks all !