heater core bypass?
Thread Starter
Advanced
Joined: Jul 2009
Posts: 87
Likes: 1
heater core bypass?
hi all, need some advice have a 1972 . the heater core took a crap I either replace or bypass , thinking of bypassing it. live in California drive it during summer never have used the heater..any advice out there , if I do bypass should I just connect the hose from the manifold to the pump? any advice would be much appreciated..coulds replace it but looks like a major job..thanks in advance
Le Mans Master
Joined: Sep 2003
Posts: 8,812
Likes: 2,029
From: eastern NC
hi all, need some advice have a 1972 . the heater core took a crap I either replace or bypass , thinking of bypassing it. live in California drive it during summer never have used the heater..any advice out there , if I do bypass should I just connect the hose from the manifold to the pump? any advice would be much appreciated..coulds replace it but looks like a major job..thanks in advance
Having said all of that we would often bypass our heater cores on our C3's in the summer to reduce the cockpit heat in the manner you suggested. In the late fall and winter we would reconnect them. I took my non-A/C, '73 to Hawaii for three years and bypassed the heater core the entire time I was there just to remove some cockpit heat. My passenger was most grateful.
Good luck... GUSTO
Racer
Joined: Oct 2016
Posts: 336
Likes: 69
From: Staten Island New York
hi all, need some advice have a 1972 . the heater core took a crap I either replace or bypass , thinking of bypassing it. live in California drive it during summer never have used the heater..any advice out there , if I do bypass should I just connect the hose from the manifold to the pump? any advice would be much appreciated..coulds replace it but looks like a major job..thanks in advance
................................ tom
Heel & Toe
Joined: Mar 2017
Posts: 18
Likes: 1
From: harrow ontario
heater core
if you dont have ac its so easy to replace under the hood took me no more than an hour to remove old one and put in new one on my 1969 427 purchased new one from corvette central have fun.
Le Mans Master
Joined: Mar 2001
Posts: 5,738
Likes: 644
From: Lincoln, CA
At least on the L36 the heater hoses go to the overflow tank. I don't need heat either so I bought this. 5/8 to 3/4 tube
http://www.ebay.com/itm/LS1-LS2-LS3-...item3d2210e327
http://www.ebay.com/itm/LS1-LS2-LS3-...item3d2210e327
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Le Mans Master
Joined: May 2002
Posts: 5,086
Likes: 786
From: Lebanon Township New Jersey
There is no need to bypass the heater. Simply install pipe plugs in the water pump and manifold threaded ports where the hose connections were. I've done this for years with no problems and it gets rid of some clutter under the hood.
URL=http://s31.photobucket.com/user/bkopcko/media/20140426_1115053_zpsee29832b.jpg.html]
[/URL]
URL=http://s31.photobucket.com/user/bkopcko/media/20140426_1115053_zpsee29832b.jpg.html]
[/URL]
Last edited by BKbroiler; Mar 14, 2017 at 03:14 PM.
Thread Starter
Advanced
Joined: Jul 2009
Posts: 87
Likes: 1
It is a significant/tedious job, but nothing a determined garage fanatic can not handle. Without a heater, you will have difficulty de-fogging your windshield on rainy days... but you live in California, so that will be for you to decide.
Having said all of that we would often bypass our heater cores on our C3's in the summer to reduce the cockpit heat in the manner you suggested. In the late fall and winter we would reconnect them. I took my non-A/C, '73 to Hawaii for three years and bypassed the heater core the entire time I was there just to remove some cockpit heat. My passenger was most grateful.
Good luck... GUSTO
Having said all of that we would often bypass our heater cores on our C3's in the summer to reduce the cockpit heat in the manner you suggested. In the late fall and winter we would reconnect them. I took my non-A/C, '73 to Hawaii for three years and bypassed the heater core the entire time I was there just to remove some cockpit heat. My passenger was most grateful.
Good luck... GUSTO
? thanks by the way for your info much appreciated
Thread Starter
Advanced
Joined: Jul 2009
Posts: 87
Likes: 1
Thread Starter
Advanced
Joined: Jul 2009
Posts: 87
Likes: 1
There is no need to bypass the heater. Simply install pipe plugs in the water pump and manifold threaded ports where the hose connections were. I've done this for years with no problems and it gets rid of some clutter under the hood.
URL=http://s31.photobucket.com/user/bkopcko/media/20140426_1115053_zpsee29832b.jpg.html][/URL]
URL=http://s31.photobucket.com/user/bkopcko/media/20140426_1115053_zpsee29832b.jpg.html]
[/URL]
Le Mans Master
Joined: May 2002
Posts: 5,086
Likes: 786
From: Lebanon Township New Jersey
I don't know why people think a bypass is required. My car originally had a vacuum controlled valve in one of the heater hoses which is supposed to stop the water flow. Two pipe plugs do the same thing - permanently.
Intermediate
Joined: Mar 2017
Posts: 44
Likes: 5
From: Imperial MIssouri
Le Mans Master
Joined: Aug 2006
Posts: 7,427
Likes: 1,560
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Team Owner
Joined: Aug 1999
Posts: 30,995
Likes: 99
From: Ontario