The Ford Barn

Boeing · 05-04-2018, 02:35 PM

Original heater on my 1946 F1, because my 6v heater motor had some issues with the wiring, and due to the fact that the truck is now 12v I decided to change the 6v motor to a 12v motor. I realize that there are some modifications to accomplish in order to switch the motors. I cut the bolt extensions on the shaft side. Now I realize that the fan assembly will not sit low enough. It is about 1 inch too high. I could file off the ¼ inch collar at the base of the shaft. But the motor will still be close to ¾ inch too high. Has anyone completed this modification? If so, I would appreciate some help with this mod. Thanks

tubman · 05-04-2018, 06:21 PM

It would help if we knew that year and model of the car, as well as whether it is a stock or aftermarket heater. Also, if aftermarket, what kind?

50fordcoupeman · 05-04-2018, 06:27 PM

I am running my 6v heater motor on 12v with no issues.

GB SISSON · 05-04-2018, 10:42 PM

I have both a stock heater and an aftermarket Arvin heater to use in my 46 pickup/woodie project. Both have propeller type fans and both are 6v. I also am 12 volt converted. Neither of these heaters that I just bought at the Portland swap meet have operable motors. Surely there is a motor out there from a toyota or something else in the junkyard that would yield a good motor and fit in our heaters. I like this kind of thread, but any new ideas?

TJ · 05-05-2018, 08:50 AM

Take the existing motor to Napa Auto Parts and see if they can match the dimensions to a 12 volt motor.

FortyNiner · 05-05-2018, 08:54 AM

Sponsored Links (Register now to hide all advertisements)

The NAPA 655-1021 or 655-1020 fit the Ford script recirc heater units.

Marvin/TN · 05-06-2018, 01:29 PM

I had a 1951 F-1 that I changed engines in and converted to 12 Volts. I used a GM blower resister to drop the 12 volts down to 7 volts. It does have to be mounted in the air stream to keep it cool. To do that I used a hole saw to make a hole in the bottom of the heater case/hsgn and mounted the resister where it would be in the air stream, picked up the 7 volt tap, wired it from the Sw to the resister to the motor and it worked fine for many years. I think I got the resister off an 70's Pont. We had a total out on the lot so I took it off of it. I left the dealership in 1978 to open my own collision Repair shop so it had to be late 70's. Easier and cheaper then buying a new motor or heater

Boeing · 05-06-2018, 03:15 PM

Thank you to all of you who have taken the time to reply to my post. I have installed the new 12v motor and mounted the heater under the dash. Now all I need is the correct routing for the heater hoses. I know that one hose is connected to the heater control valve on the top of the right cylinder head. I am not sure where the return line is connected. Does someone have a picture of the correct routing? Thank you...

RKS.PA · 05-07-2018, 10:32 AM

Boeing, I don't have a picture, but on my '47 the return goes to the lower radiator hose on the right side. In my case, that hose is very short and it was a bear to get the fitting in the hose and the hose back on the pump and radiator. There is a special fitting that you install in the hose for this purpose available from C&S and other suppliers.

RET · 03-31-2023, 02:18 PM

Quote:

Originally Posted by Boeing

Thank you to all of you who have taken the time to reply to my post. I have installed the new 12v motor and mounted the heater under the dash. Now all I need is the correct routing for the heater hoses. I know that one hose is connected to the heater control valve on the top of the right cylinder head. I am not sure where the return line is connected. Does someone have a picture of the correct routing? Thank you...

What motor did you use?

RET · 03-31-2023, 02:18 PM

What motor did you use?

Zeke3 · 03-31-2023, 04:23 PM

Boeing hasn't been on this forum since June, 2018. You can check when a person was last on the forum by clicking on their username and then viewing their public profile. Good luck with your heater motor, hopefully another active user will be able to help you.

05-04-2018, 02:35 PM	#1
Boeing Member Join Date: May 2016 Location: Moncton NB Canada Posts: 63	Heater motor conversion Original heater on my 1946 F1, because my 6v heater motor had some issues with the wiring, and due to the fact that the truck is now 12v I decided to change the 6v motor to a 12v motor. I realize that there are some modifications to accomplish in order to switch the motors. I cut the bolt extensions on the shaft side. Now I realize that the fan assembly will not sit low enough. It is about 1 inch too high. I could file off the ¼ inch collar at the base of the shaft. But the motor will still be close to ¾ inch too high. Has anyone completed this modification? If so, I would appreciate some help with this mod. Thanks Last edited by Boeing; 05-04-2018 at 06:25 PM. Reason: More information provided

05-04-2018, 06:21 PM	#2
tubman Senior Member Join Date: Dec 2013 Location: Minnesota, Florida Keys Posts: 10,395	Re: Heater motor conversion It would help if we knew that year and model of the car, as well as whether it is a stock or aftermarket heater. Also, if aftermarket, what kind?

05-04-2018, 06:27 PM	#3
50fordcoupeman Senior Member Join Date: Mar 2016 Location: LaGrande Oregon Posts: 866	Re: Heater motor conversion I am running my 6v heater motor on 12v with no issues.

05-04-2018, 10:42 PM	#4
GB SISSON Senior Member Join Date: Jan 2014 Location: Orcas Island Washington Posts: 5,057	Re: Heater motor conversion I have both a stock heater and an aftermarket Arvin heater to use in my 46 pickup/woodie project. Both have propeller type fans and both are 6v. I also am 12 volt converted. Neither of these heaters that I just bought at the Portland swap meet have operable motors. Surely there is a motor out there from a toyota or something else in the junkyard that would yield a good motor and fit in our heaters. I like this kind of thread, but any new ideas? __________________ Owner/Operator of 'Jailbar Ranch' on the side of Mt. Pickett. Current stable consists of 1946 1/2 ton pickup turned woodie wagon with FH V8, 1946 Tonner Pickup with 226 H six, 1979 Toyota landcruiser wagon, now wearing 1947 Ford Jailbar sheet metal. 'Rusty ol' floorboards, hot on their feet' (Alan Jackson)

05-05-2018, 08:50 AM	#5
TJ Senior Member Join Date: May 2010 Location: Napa,California Posts: 6,058	Re: Heater motor conversion Take the existing motor to Napa Auto Parts and see if they can match the dimensions to a 12 volt motor.

05-05-2018, 08:54 AM	#6
FortyNiner Senior Member Join Date: May 2012 Location: u-rah-rah-Wisconsin Posts: 1,143	Re: Heater motor conversion Sponsored Links (Register now to hide all advertisements) The NAPA 655-1021 or 655-1020 fit the Ford script recirc heater units. __________________ 19 and 49 F1 - jes' like Henry II built 1946 Deluxe - as Henry built it

05-06-2018, 01:29 PM	#7
Marvin/TN Senior Member Join Date: May 2010 Location: Chattanooga, TN area Posts: 832	Re: Heater motor conversion I had a 1951 F-1 that I changed engines in and converted to 12 Volts. I used a GM blower resister to drop the 12 volts down to 7 volts. It does have to be mounted in the air stream to keep it cool. To do that I used a hole saw to make a hole in the bottom of the heater case/hsgn and mounted the resister where it would be in the air stream, picked up the 7 volt tap, wired it from the Sw to the resister to the motor and it worked fine for many years. I think I got the resister off an 70's Pont. We had a total out on the lot so I took it off of it. I left the dealership in 1978 to open my own collision Repair shop so it had to be late 70's. Easier and cheaper then buying a new motor or heater

05-06-2018, 03:15 PM	#8
Boeing Member Join Date: May 2016 Location: Moncton NB Canada Posts: 63	Re: Heater motor conversion Thank you to all of you who have taken the time to reply to my post. I have installed the new 12v motor and mounted the heater under the dash. Now all I need is the correct routing for the heater hoses. I know that one hose is connected to the heater control valve on the top of the right cylinder head. I am not sure where the return line is connected. Does someone have a picture of the correct routing? Thank you...

05-07-2018, 10:32 AM	#9
RKS.PA Senior Member Join Date: Jun 2010 Location: Marana, AZ Posts: 1,196	Re: Heater motor conversion Boeing, I don't have a picture, but on my '47 the return goes to the lower radiator hose on the right side. In my case, that hose is very short and it was a bear to get the fitting in the hose and the hose back on the pump and radiator. There is a special fitting that you install in the hose for this purpose available from C&S and other suppliers.

03-31-2023, 02:18 PM	#11
RET Junior Member Join Date: Sep 2018 Posts: 9	Re: Heater motor conversion What motor did you use?

03-31-2023, 04:23 PM	#12
Zeke3 Senior Member Join Date: Dec 2014 Location: Columbus, IN Posts: 1,409	Re: Heater motor conversion Boeing hasn't been on this forum since June, 2018. You can check when a person was last on the forum by clicking on their username and then viewing their public profile. Good luck with your heater motor, hopefully another active user will be able to help you.