When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Re: just finished heater core exchange (KrAzYSnIpEr)
Hello BLT-71. Just wondering if you had to remove your dash to replace the heater core? Or could your remove/replace thru the engine compartment? My vette is a 1972 all stock 350 non AC with a 4 speed.
Also, why so many heater core replaces in such a short time?
Thanks and have a happy new year!
Also, why so many heater core replaces in such a short time?
My opinion is that heater cores burst because the thermostat is closing and causing too much back pressure...I have never had a heater core go bad on me, and I believe it's because I don't use a thermostat. I understand that there are some thermostats that have a hole drilled in them to reduce the pressure buildup, but I've never tried them.
Well I go both ways, so to speak. I still pull the dash and do most of the work that way but when I put in back in I pull the engine section to clear the tubes. It is just too tight to do it all from the engine side. And besides I needed to do a few thing under the dash.
I have been in there so many times I did it in less than an hour total time. The cold inspired me to hurry.
Me and a couple other vette buddies found that the GM replacements fail rather quickly, 1-2 year tops. The after market like Auto Zone last a bit longer either way I have replaced too many. It is scary to think my original was in there for many years.
Re: just finished heater core exchange (KrAzYSnIpEr)
Yeah, the GM cores seem to have a tendency to leak quickly. He!!, I've seen some that leaked before they were ever installed. From now on I'll have every new core pressure checked before it ever gets installed.
Re: just finished heater core exchange (KrAzYSnIpEr)
I've helped a buddy with an AC car and it multiples all problems by three. More ducts bigger cases etc. I don't envy you.
But now we are ready for the chill.
Re: just finished heater core exchange (KrAzYSnIpEr)
KrAzYSnIpEr-
How much of the interior did you have to remove to do this job? Does the dash have to come out or just the console and ductwork? I know different years require different procedures and am preparing for this inevitable job on my 79 with Air. Thanks in advance for any heads up.