Heater Core Bypass Needed?
Feb 16, 2019 | 01:14 PM
Thread Starter
Racer
Joined: Jan 2012
Posts: 321
Likes: 16
From: Ontario
Heater Core Bypass Needed?
Hello,
I do not have a heater core in my car at the moment. I deleted all the AC stuff and need to get a cover and blower, but wont do that for a while.
Do I need to run a short hose from the water pump outlet to the inlet on the intake manifold to bypass the heater core, or can I just plug these?
Do I need that circulation? Any harm in not having this bypass?
Thanks.
Dom
Feb 16, 2019 | 01:30 PM
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,027
1/2" NPT pipe plugs are fine.
Feb 16, 2019 | 01:32 PM
Team Owner
Joined: Jan 2008
Posts: 30,894
Likes: 1,189
From: chicago
a hose would be better ,the flow is good
Feb 16, 2019 | 02:12 PM
Safety Car
Joined: Oct 2015
Posts: 4,782
Likes: 223
From: Lebanon Pa
My heater core broke on a different car and I just used a deep well socket that was closed to the inner diameter of the hoses and two clamps for a temporary fix.
Feb 16, 2019 | 03:05 PM
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,027
Zillions of generators and boat engines have plugs there. No worries.
Feb 16, 2019 | 03:37 PM
Le Mans Master
Joined: May 2002
Posts: 5,084
Likes: 786
From: Lebanon Township New Jersey
Absolutely no need for a bypass. Also, they look goofy. I've been running my 77 for ten years with pipe plugs in the manifold and water pump.
Feb 16, 2019 | 08:26 PM
Race Director
Joined: Oct 2008
Posts: 19,141
Likes: 1,667
From: Long Island
Just plug it on a Chevy. The cars had a hot water shut off valve anyway,,
Feb 17, 2019 | 03:28 AM
Race Director
Joined: Jul 2015
Posts: 13,082
Likes: 3,399
From: SW Florida.
And water is shut off when it is too hot outside to run heat.
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