I'm unable to find a standard part from any of the vendors to seal the gap between the heater motor and firewall. My truck came with a thin piece of rubber, but it didn't hold up well.
Is there a standard part, or what are people using for this?
Greg, Check your local Home Depot, Lowes or hardware store for something you can adapt from their weatherstrip section. I have made gaskets out of old rubber Mouse Pads. You could also use something like this. https://www.grainger.com/category/m...ibration-control/vibration-isolator-pads Sometimes we have to get creative. Harold
34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
Whoaw!! HandyAndy seems to have a circular metal ring that is attached to firewall which goes around the wiper motor, getting sealed up with a piece of innertube, whereas Greg Brown, you do not have such a ring per your pics. So unless you have such a metal ring, you will need to find another way to seal between the motor and firewall.
Craig
My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.
I'm with Brad Allen on this, your motor is non-stock, from the looks of it, the motor barely protrudes out past the firewall. The stock motor sticks out past the firewall, which gives you the ability to slide a gasket around the motor housing to make a seal. With the motor you have, it could be covered with a round metal plate. You would have to cut off the access screw threads. Original Posters Picture of Heater Motor It is kind of hard, to tell, just how far the motor sticks out past the firewall, because of the angle the picture was taken.
One of the members building an AD hot rod used an oil filter canister welded to the firewall to cover the heater motor. If you didn't want to weld it on, you could build something with a flange and bolt it on. Here's a link to what he did. Firewall heater motor cover
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
I have run into similar problems when I restore Fresh Air heaters as most get updated with 12 volt motors.
All of the 12 volt motors are smaller in size compared to the original 6 volt motors. The 12 volt motors are too small to fit the hole in the firewall or the original seal.
I have devised an ingenious work around for getting everything to seal { & it will work in this case also }
First get an old original 6 volt blower motor that is fried.
Take it apart & get just the front cover off the motor. Slide the cover into the firewall seal & retainer.... & silicone it in place. Then take the cover with the seal attached & install it over the new {smaller} blower motor protruding out from the firewall & secure it with 3 sheet metal screws.
The finished installation looks just like an original blower motor installed on the firewall.
work around for getting everything to seal { & it will work in this case also }