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Old 06-19-2019, 07:07 AM   #1
rally 1
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Default Tillotson carburetors

Recently obtained several Tillotson carbs that have an accelerator pump.
Havent been able to determine the model designation for them.
Any experience using them on an A engine?
What was the OEM application for them.
Are parts available?
Sorry for all the questions.
Thanks
Ken
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Old 06-19-2019, 07:29 AM   #2
jhowes
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Default Re: Tillotson carburetors

I have never heard of an accelerator pump on a Tillotson but we learn every day something new. There are people on this forum that carry parts for these and can rebuild them. I would try a search and see what comes up. Good luck. Jack
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Old 06-19-2019, 08:22 AM   #3
Railcarmover
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Default Re: Tillotson carburetors

Saw one at the swap meet..passed on it ,bought a couple of B carbs instead.let us know how the pump wells look,imagine that pot metal didnt hold up too good.
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Old 06-19-2019, 08:35 AM   #4
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Default Re: Tillotson carburetors

Talking with one of our club members, sounds like this “pump” is more like a part throttle enrichment circuit (power valve) rather than an accel pump.
I have two of them in transit, will try them on the test stand.
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Old 06-19-2019, 10:09 AM   #5
Joe K
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Default Re: Tillotson carburetors

Tillotson F1B has a pump. Not sure what it pumps or why. Not usually a preferred carb (not my experience but others report not as good as Tillotson X or XF)

Tillotson F1B below.

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Old 06-19-2019, 12:02 PM   #6
Purdy Swoft
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Default Re: Tillotson carburetors

Are you sure its a Tillotson and not a Marvel carburetor ?
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Old 06-19-2019, 01:48 PM   #7
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Default Re: Tillotson carburetors

No parts available for F1B I have heard.
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Old 06-19-2019, 01:48 PM   #8
rally 1
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Default Re: Tillotson carburetors

The carbs I purchased say Tillotson on them.
I have an engine on my test stand that I’ll try one on after rebuild.
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Old 06-19-2019, 08:53 PM   #9
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Default Re: Tillotson carburetors

Love the Tillotson on my A. Very easy to rebuild.
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Old 06-19-2019, 08:58 PM   #10
Flathead
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Default Re: Tillotson carburetors

Smith & Jones has gasket sets for these, the float and needle valve are the same as Zenith. They are held together with one bolt like a Zenith but because they are pot-metal warping is a problem.
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Old 06-20-2019, 09:35 AM   #11
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Default Re: Tillotson carburetors

My 1930 Coupe had a Tillotson F1B carburetor when I got it many, years ago. I drove it 50 years unrestored with the Tillotson F1B and had zero trouble and gas mileage 25-26 mpg. I estimate I probably drove it at least 150,000 miles o in those years as it went from only car, to second car. Then came a restoration in the early 1990's and a Zenith installed then, and a switch to antique use. Performance Tillotson to Zenith no noticeable difference. Gas miles dropped about 2 or 3 mpg. The Tillotson F1B is now on a shelf in storage, and is not warped. And yes I have owned this Coupe a long time, 78 + years.
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Old 06-20-2019, 01:09 PM   #12
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Default Re: Tillotson carburetors

No problem to fix a warped Tillotson. I clamped and baked in the oven and all back to square and on my car. I posted pics in a prior thread.
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Old 06-20-2019, 02:23 PM   #13
Purdy Swoft
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Default Re: Tillotson carburetors

Years ago when good usable Zenith carburetor parts were difficult to obtain , the new Tillotson model X carbs that JC Whitney sold for less than twenty dollars was one of the best deals available . After a few years when the pot metal Tillotson warped it never seemed to perform as well , no matter what was done to correct it . When good usable Zenith carburetor parts became available and after buying and watching the video Carburetors and carbohydrates I decided to go back to my original cast iron Zenith carbs .
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