Heater bypass question
Thread Starter
Pro
Joined: Feb 2004
Posts: 631
Likes: 41
From: Tampa FL
Heater bypass question
Ive decided to never use my heater again
I will plug the manifold but is there a quick and easy way to plug my filler tank outlet?
I have the long skinny black cylinder kind inside the fender used on BB w/Air - it has an outlet underneath - I think the return from the heater core - what can I plug it with?
I will plug the manifold but is there a quick and easy way to plug my filler tank outlet?
I have the long skinny black cylinder kind inside the fender used on BB w/Air - it has an outlet underneath - I think the return from the heater core - what can I plug it with?
Instructor
Joined: Jan 2004
Posts: 169
Likes: 0
From: Ingersoll Ontario
I simply cut off both lines to the heater core at the bottom and pluged the manifold hole and the hole in the waterpump. I got this idea from carguy4sure and it looks nice and neat under the hood and he said that it worked for him....so it'll work for me 
Thanks carguy4sure 
Thanks carguy4sure
Thread Starter
Pro
Joined: Feb 2004
Posts: 631
Likes: 41
From: Tampa FL
Originally Posted by hirevroller
I simply cut off both lines to the heater core at the bottom and pluged the manifold hole and the hole in the waterpump. I got this idea from carguy4sure and it looks nice and neat under the hood and he said that it worked for him....so it'll work for me Thanks carguy4sure
Thanks carguy4sure Hmm - the manifold hole is easy but my water pump hole leads to my expansion tank or whatever that thing is. Then there's an outlet (or inlet) to the heater core. So if I plug the waterpump hole, the dont I screw up the recovery system?
Racer
Joined: Aug 2000
Posts: 488
Likes: 0
From: Fremont,CA
I took off both lines and pluged both manifold and water pump and blew out the heater core with air. In your case can you run a hose from the expansion tank to the manifold and bypass the heater? I don't have that setup in my 69....
Thread Starter
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Joined: Feb 2004
Posts: 631
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From: Tampa FL
only real issue is what to plug the expansion tank heater core outlet with.
Its just a metal tube with a hose and hose clamp that leads to the heater core - need to plug it with something or else all the coolant would leak out there.
I wish I could draw a picture..
I have a hose from the manifold to the heater core - gone and manifold plug in - easy fix
I have a hose from the water pump to the Expansion Tank - needs to stay
I have a hose from the Expansion tank to the radiator - needs to stay
I have a hose from the Expansion tank to the heater core - needs to go and outlet plugged (plugged with what?).
Make sense?
Its just a metal tube with a hose and hose clamp that leads to the heater core - need to plug it with something or else all the coolant would leak out there.
I wish I could draw a picture..
I have a hose from the manifold to the heater core - gone and manifold plug in - easy fix
I have a hose from the water pump to the Expansion Tank - needs to stay
I have a hose from the Expansion tank to the radiator - needs to stay
I have a hose from the Expansion tank to the heater core - needs to go and outlet plugged (plugged with what?).
Make sense?
Last edited by mike229; Mar 21, 2005 at 11:27 PM.
Thread Starter
Pro
Joined: Feb 2004
Posts: 631
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From: Tampa FL
http://www.motormitedormancatalog.co...LWP7T1H80LXGOY
Would this work? I guess with a hose clamp for added security?
Would this work? I guess with a hose clamp for added security?
Drifting
Joined: Nov 2002
Posts: 1,692
Likes: 208
From: Loveland, CO
I used exactly what Mike recommended. Got them at napa. Used them on my pickup to plug the holes in the radiator. Used screw clamp to hold on. For some reason older Chev pickups ran the heater hose into the radiator itself.
Last edited by rponfick; Mar 22, 2005 at 10:36 AM.
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Melting Slicks
Joined: May 1999
Posts: 2,897
Likes: 0
From: Moon Township PA
One of our fellow posters (you there Paul B?) here will surely jump in with his photos, but a simple but elegant fix is to pull the two hoses off of your heater core. Go to you local hardware store and buy yourself two 90 degree copper elbows and the appropriate size tubing (shouldn't need more than six inches of it) and sweat up a "U". That is, a small section of 3/4" pipe going to the first elbow, a VERY short section of pipe to the next elbow and then a corresponding pipe to the other hose. Clamp both pipes inside the heater hoses and you now have a funcitioning heater core bypass. Take some wire bundle ties and secure your heater hoses to the side of the fender. Less than 30 minutes to do this whole setup.
Gary
Gary
Thread Starter
Pro
Joined: Feb 2004
Posts: 631
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From: Tampa FL
Originally Posted by GaryS
One of our fellow posters (you there Paul B?) here will surely jump in with his photos, but a simple but elegant fix is to pull the two hoses off of your heater core. Go to you local hardware store and buy yourself two 90 degree copper elbows and the appropriate size tubing (shouldn't need more than six inches of it) and sweat up a "U". That is, a small section of 3/4" pipe going to the first elbow, a VERY short section of pipe to the next elbow and then a corresponding pipe to the other hose. Clamp both pipes inside the heater hoses and you now have a funcitioning heater core bypass. Take some wire bundle ties and secure your heater hoses to the side of the fender. Less than 30 minutes to do this whole setup.
Gary
Gary
Gary that sounds great but doesnt clean up the engine bay with the hoses still there!
I have a more detailed description of my 2 choices – consider that this pertains specifically to a 71 Big Block with the black cylindrical expansion tank on the inner fender.
I have 4 expansion tank nipples - radiator, overflow, water pump, and heater core
Option 1. Remove both Heater Hoses. Plug Manifold. Cap off expansion tank heater core nipple.
Option 2. Remove both Heater Hoses. Run new hose directly from Manifold to expansion tank heater core nipple. (basically same as Gary's solution but 1 less hose)
Will any of this cause increased engine temp - especially Option 1?
For instance will the water pump output be too much for the tank to handle w/out it going somewhere (like back to the intake)
Thoughts??
Many thanks!
Mike
Melting Slicks
Joined: May 1999
Posts: 2,897
Likes: 0
From: Moon Township PA
Originally Posted by mike229
Gary that sounds great but doesnt clean up the engine bay with the hoses still there!
I have a more detailed description of my 2 choices – consider that this pertains specifically to a 71 Big Block with the black cylindrical expansion tank on the inner fender.
I have 4 expansion tank nipples - radiator, overflow, water pump, and heater core
Option 1. Remove both Heater Hoses. Plug Manifold. Cap off expansion tank heater core nipple.
Option 2. Remove both Heater Hoses. Run new hose directly from Manifold to expansion tank heater core nipple. (basically same as Gary's solution but 1 less hose)
Will any of this cause increased engine temp - especially Option 1?
For instance will the water pump output be too much for the tank to handle w/out it going somewhere (like back to the intake)
Thoughts??
Many thanks!
Mike
I have a more detailed description of my 2 choices – consider that this pertains specifically to a 71 Big Block with the black cylindrical expansion tank on the inner fender.
I have 4 expansion tank nipples - radiator, overflow, water pump, and heater core
Option 1. Remove both Heater Hoses. Plug Manifold. Cap off expansion tank heater core nipple.
Option 2. Remove both Heater Hoses. Run new hose directly from Manifold to expansion tank heater core nipple. (basically same as Gary's solution but 1 less hose)
Will any of this cause increased engine temp - especially Option 1?
For instance will the water pump output be too much for the tank to handle w/out it going somewhere (like back to the intake)
Thoughts??
Many thanks!
Mike
Gary
