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Through its nineteen years of production the Model T always came from the factory with no air filter. It had a hot air pipe attached to the exhaust manifold to heat the air going into the carburetor, but no filter. That's a bit surprising, given the dusty unpaved roads that prevailed in most of its habitat. Today many of us Model T owners dislike the idea of grit going into our engines, especially if we do a lot of driving on country roads, and we install a filter. There are many kinds, installed in many ways. This MTFCA discussion page shows some of them, including mine.

I'll post some photos here showing how I installed my latest one. The pictures in the link above show my filter wired to the carburetor, but I made mounting hardware for the second one. As I stated in the MTFCA post, I'm using the Mr. Gasket Co. generic air filter #4354. I bought it at O'Reilly for less than $20.

A 1¼" sink drain is a perfect fit for the Holley G and NH carburetors.
I haven't tried it on any other carbs.
A shallow flange will hold the filter housing.
This is the wrong size, but shows what the part looks like.
It should be 1¼" to fit the drain pipe.
This shows the pipe with a few inches cut off and the flange soldered to it.
The base of the filter housing fits the flange nicely and is fastened to it with two screws.
Before soldering and screwing these pieces together I stripped off the plating with muriatic acid so solder and paint would stick.


To make the hardware for attaching the filter to the carburetor I started with templates made of heavy paper.
In this picture one part of the hardware is already on the carburetor for a test fit and I'm making the other part to match it.
Using the template I'm marking a piece of galvanzed sheet metal for cutting.
When these parts are finished I'll strip them and all the mounting machine screws and nuts for painting.


Using a small cutting wheel to cut out one of the two collars.
A test fit before stripping and painting all the parts.


One collar clamps around the choke opening, the other around the pipe, and two machine screws hold them together,
I had to be sure the hardware was designed for the choke lever tlo miss it.
The finished accessory painted and in the car.
It's a pretty tight fit, and getting the carb in place with the filter on it is a little tricky.
If I do another of these I'll cut the pipe a little shorter so the filter sits lower.

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