Leaking Heater Core
Thread Starter
Le Mans Master
Joined: Jul 2000
Posts: 6,001
Likes: 112
From: Saginaw Michigan
Leaking Heater Core
I have a friend with a 1975 with air conditioning. He is finding some wetness (I assume that it is engine coolant) on his passenger side floor mat. He is afraid that the problem is a leaking heater core.
Has anyone used Bars Leak in their cooling system to stop a leak like that (even as a short term fix)? I understand that replacing the heater core in a Vette with AC is no fun.
Jim
Has anyone used Bars Leak in their cooling system to stop a leak like that (even as a short term fix)? I understand that replacing the heater core in a Vette with AC is no fun.
Jim
Melting Slicks
Joined: Feb 2003
Posts: 3,053
Likes: 4
St. Jude Donor '03,'11
Originally Posted by Jim Shea
I have a friend with a 1975 with air conditioning. He is finding some wetness (I assume that it is engine coolant) on his passenger side floor mat. He is afraid that the problem is a leaking heater core.
Has anyone used Bars Leak in their cooling system to stop a leak like that (even as a short term fix)? I understand that replacing the heater core in a Vette with AC is no fun.
Jim
Has anyone used Bars Leak in their cooling system to stop a leak like that (even as a short term fix)? I understand that replacing the heater core in a Vette with AC is no fun.
Jim
Instructor
Joined: May 2006
Posts: 202
Likes: 16
Originally Posted by Jim Shea
I have a friend with a 1975 with air conditioning. He is finding some wetness (I assume that it is engine coolant) on his passenger side floor mat. He is afraid that the problem is a leaking heater core.
Originally Posted by Jim Shea
Has anyone used Bars Leak in their cooling system to stop a leak like that (even as a short term fix)? I understand that replacing the heater core in a Vette with AC is no fun.
Jim
Jim
Safety Car
Joined: Aug 2001
Posts: 3,683
Likes: 202
From: Waterford Mi
Race Director
Joined: Jul 2004
Posts: 12,696
Likes: 329
From: Scottsdale Arizona
Originally Posted by 71forKen
or bypass the heater core altogether.
Racer
Joined: Nov 2004
Posts: 432
Likes: 0
From: Granbury TX
Originally Posted by CA-Legal-Vette
I think this is a better solution and VERY easy to do. Just loop one of the hoses on the water pump to the other nipple and remove the extra hose. This way he won't have to wonder what all he's clogged with the stop leak.
Race Director
Joined: Sep 2002
Posts: 10,362
Likes: 5
From: San Diego - Deep Within The State of CONFUSION!
Originally Posted by lucky76
Hoses are different sizes. One is 5/8" and other is 3/4".
Or, just put a ball valve in each hose.
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Race Director
Joined: Jul 2004
Posts: 12,696
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From: Scottsdale Arizona
Originally Posted by lucky76
Hoses are different sizes. One is 5/8" and other is 3/4".
Lucky is correct.
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
5/8-3/4 come on guys, that hose will stretch/reduce with a clamp, I use 1/2 inch copper water pipe for a nipple about 2" worth.....
second off, just bypass the heater untill summer is over, fix it when weather is nice, and you don't have to tear out the entire dash assy....
just the pass map pocket, and maybe center cluster..maybe...I forget...
the worst part of the whole deal is dealing with those firewall sealing crap...all dried out....I used black RTV for resealing....
only about 6 bolts or so to pull inner housing...a/c not affected....
GENE
second off, just bypass the heater untill summer is over, fix it when weather is nice, and you don't have to tear out the entire dash assy....
just the pass map pocket, and maybe center cluster..maybe...I forget...
the worst part of the whole deal is dealing with those firewall sealing crap...all dried out....I used black RTV for resealing....
only about 6 bolts or so to pull inner housing...a/c not affected....
GENE
