On my 1926 (see pictures) the carburetor pre heat tube will not fit behind the carburetor mixture control rod. The rod (see picture) seems to be properly mounted through the fire wall. So, either i need a different pre heat tube or i am doing something wrong. Any advice ?
Looks like you have a pre-26 preheat tube, the design for the improved cars is slightly different, here is a pic:
Things will fit much better with the correct pipe. Find an original, in my experience the reproduction ones do not fit well. I believe Dave Huson was selling some original pipes earlier, perhaps he still has a few.
Most likely your car will run better without it. It was put there by Ford due to the bad kerosene mixed gas that was available back when the car was new. With today's fuel your car will run better without it 99% of the time.
And should the unlikely happen some foggy day, so carb ice would cause the engine to run rough, then it's easy to just stop by the side of the road and wait for the engine heat to spread to the carb. (Before gasohol we paid extra for alcohol to put in the tank to avoid carb ice during winter time here in Sweden..)
As Mark's picture shows, the 26-27 version is indented to accommodate the control rod. Here's the pre-26 type for comparison.
Oops! Sorry, Steve, but yours is an improved car pipe that has been modified to fit an earlier car (note how the tab that fits over the clamping stud has been sliced on the edges and the tab bent back so that the pipe can fit closer to the manifold).
David's picture shows the correct earlier pipe, it has a separate tab that is riveted onto the pipe.
Here is another pic of the earlier pipe with the riveted-on tab:
I just noticed that the pic I just posted has a mix of manifold clamps - the aft-most clamp is an improved car clamp that has been installed inside-out to fit an earlier car.
I have two different styles of 1926-27 carb tubes available for sale if anyone is interested.
I'm not sure if the one on the left is a true 26-27 factory issue or if someone hammered on it to accommodate the control rod.
The second one (shiny black) is definitely a 1926-27 - note the dog leg.
One thing Gail Rodda hasn't tackled yet is the evolution of carburetor heat pipes! I attempted it once, but gave up. I guess I'm not patient enough. As I recall, there are at least a dozen different styles, maybe more.
Steve. What is that pet cock on the picture on the intake for ? Lorenzo..
David : Just install th3e hot air tube on the manifold stud ( under then nut ) and the carb intake..... it will fit .
Look very closely at the various pictures. The manifold studs on the third and fourth pictures are longer and the clamps are reversed from the first two. I think the heat pipes might be made for the opposite length stud. If the car were mine, I would find a way to modify the heat tube to make it fit. Some of those tubes have been bent in for the choke rod to pass by. They look like they have been hammered. It works!