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Username Post: Heater Plumbing
Jack Crain
Contributor
Posts 840
11-27-17 05:44 AM - Post#2715891    

Hi All. I'm in the process (thinking about) of redoing my heater in the 46. I've found a 12 motor that should work and since I will have the heater out of the car I will replace the heater hoses, also. I'm not sure how the original plumbing was but my car has shut off valve in each of the hoses. NOT car valves, but regular valves like you would put on your house water pipes. I think that originally the water just continuously ran thru the heater core summer and winter. I would like to have a shut-off valve that I could open and close from inside the car. I was thinking of using the throttle or choke cable as the actuating mechanism. Has any one of you ever done this before and what type/model valve did you use?
1946 Fleetmaster 4-dr Sedan with '57 235
Fenton Dual Exhaust and Intake
Dual Carter Webbers 2 barrel Carbs
HEI ignition
Front Disk Brake
T-5 Tranny

Rustchips
"7th Year" Silver Supporting Member
Posts 1053
Rustchips
11-27-17 12:11 PM - Post#2715936    

Jack, You can get those valves from any of the aftermarket AC Vendors. you can get cable operated or electric solenoid operated valves.
Look up Old Air Products on the net and check out the bypass valve part number 25-1019.
Cleon
1928 Chevy Coupe
1942 Chevy Special Deluxe Coupe
1955 Chevy Bel Air HTP
1970 El Camino
1990 F##d Mustang Convertible

Life is like a roll of toilet paper the nearer the end the faster it goes.

Jack Crain
Contributor
Posts 840
11-28-17 04:10 AM - Post#2716055    

Thanks, Chips. It's on it's way to me.

Now, another question..... which way does the water flow out of the engine? out the top in the bottom, or out the bottom in the top where the thermostat goes?
1946 Fleetmaster 4-dr Sedan with '57 235
Fenton Dual Exhaust and Intake
Dual Carter Webbers 2 barrel Carbs
HEI ignition
Front Disk Brake
T-5 Tranny

Rustchips
"7th Year" Silver Supporting Member
Posts 1053
Rustchips
11-28-17 06:22 AM - Post#2716068    

1928 Chevy Coupe
1942 Chevy Special Deluxe Coupe
1955 Chevy Bel Air HTP
1970 El Camino
1990 F##d Mustang Convertible

Life is like a roll of toilet paper the nearer the end the faster it goes.

raycow
Honored Member
Posts 27088
raycow
11-28-17 01:33 PM - Post#2716122    

If you have a 235, the hose connection at the thermostat housing is the "hot" line and the one at the water pump is the "cold" line.

Normally, you want the flow through the heater core to be from bottom to top. This reduces the chance of an air bubble getting trapped in the core. Therefore, the thermostat housing hose should connect to the lower nipple on the core and the water pump hose should connect to the upper nipple.

If any questions, please ask.

Ray
Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.

Rustchips
"7th Year" Silver Supporting Member
Posts 1053
Rustchips
11-29-17 05:34 AM - Post#2716234    

That's right Ray, I was wrong the hoses are always crossed. Top to bottom and bottom to top.
Cleon
1928 Chevy Coupe
1942 Chevy Special Deluxe Coupe
1955 Chevy Bel Air HTP
1970 El Camino
1990 F##d Mustang Convertible

Life is like a roll of toilet paper the nearer the end the faster it goes.

Jack Crain
Contributor
Posts 840
11-30-17 03:47 AM - Post#2716357    

Hmmmmmm my water connections on my heater are side by side. The instructions that came with valve says on engine side says "outlet to water pump" and "inlet from Intake Manifold". I am assuming this is for a V8. So, just to make it clear to me, I am assuming "the inlet from Intake Manifold" will connect to thermostat housing. Correct?
1946 Fleetmaster 4-dr Sedan with '57 235
Fenton Dual Exhaust and Intake
Dual Carter Webbers 2 barrel Carbs
HEI ignition
Front Disk Brake
T-5 Tranny

Rustchips
"7th Year" Silver Supporting Member
Posts 1053
Rustchips
11-30-17 06:58 AM - Post#2716370    

If there side by side, I don't guess it much matters which hose goes where?
Cleon
1928 Chevy Coupe
1942 Chevy Special Deluxe Coupe
1955 Chevy Bel Air HTP
1970 El Camino
1990 F##d Mustang Convertible

Life is like a roll of toilet paper the nearer the end the faster it goes.

raycow
Honored Member
Posts 27088
raycow
11-30-17 10:30 PM - Post#2716489    

  • Jack Crain Said:
....So, just to make it clear to me, I am assuming "the inlet from Intake Manifold" will connect to thermostat housing. Correct?


Absolutely.

Ray
Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.

raycow
Honored Member
Posts 27088
raycow
11-30-17 10:35 PM - Post#2716491    

  • Rustchips Said:
If there side by side, I don't guess it much matters which hose goes where?


Probably not, unless marked on a diagram or something like that.

Ray
Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.

Jack Crain
Contributor
Posts 840
12-02-17 03:02 AM - Post#2716621    

Thanks, Ray
1946 Fleetmaster 4-dr Sedan with '57 235
Fenton Dual Exhaust and Intake
Dual Carter Webbers 2 barrel Carbs
HEI ignition
Front Disk Brake
T-5 Tranny

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