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Old 07-14-2019, 11:38 AM   #1
poolplayer1
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Default Ford autolite 2150 question?

I replaced the old 2100 with a new 2150 carburetor.The old carb.uses the exhaust heat via a metal tube that connects to the choke assembly.
The new carb. has 2 options.It has the connection for the metal tube that comes off the exhaust or i can go electric. I decided to use the electric portion for the choke.The engine runs great and the choke is working good. Now,the question? If I remove the metal tube completely from the exhaust pipe,what is the best way to plug that hole with? I don't want that metal tube sticking out from the exhaust.Thanks for your help and suggestions.
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Old 07-14-2019, 02:21 PM   #2
darrell
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Default Re: Ford autolite 2150 question?

you dont need to plug it.
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Old 07-14-2019, 02:59 PM   #3
KULTULZ
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Post Re: Ford autolite 2150 question?

Quote:
Originally Posted by poolplayer1 View Post

I replaced the old 2100 with a new 2150 carburetor.The old carb.uses the exhaust heat via a metal tube that connects to the choke assembly.

The new carb. has 2 options.It has the connection for the metal tube that comes off the exhaust or i can go electric. I decided to use the electric portion for the choke.The engine runs great and the choke is working good.

Now,the question? If I remove the metal tube completely from the exhaust pipe,what is the best way to plug that hole with? I don't want that metal tube sticking out from the exhaust.

Thanks for your help and suggestions.
The tube is pressed into the exhaust manifold. Simply pull it out. If there is exhaust noise, then you will have to plug it. Some designs drew hot exhaust and some manifolds had heat stoves.

Does your new 2150 have a vacuum inlet on the choke housing?

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Old 07-15-2019, 11:29 AM   #4
poolplayer1
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Default Re: Ford autolite 2150 question?

Thanks darrell and Kultulz for your reply. My 2150 looks exactly like the one in the picture.Has the brass inlet for the exhaust and also the choke pull off like the one in the pix.
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Old 07-15-2019, 03:47 PM   #5
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Post Re: Ford autolite 2150 question?

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Thanks darrell and Kultulz for your reply. My 2150 looks exactly like the one in the picture.Has the brass inlet for the exhaust and also the choke pull off like the one in the pix.
OK. Not knowing the exact calibration of the carb, some 2150's had a hot air choke, a hot air assist with electric assist or total electric. I assume you bought an aftermarket full 12V choke kit.

You need to know if there is a vacuum draw at that fitting. If there is, it needs to be capped. Some choke assemblies used a controlled orifice there (filtered) to help cool the choke if full electric. Some systems did not use engine vacuum to draw heat from the choke stove but used THERMACTOR air to push the heated air to the choke housing.

A vacuum leak there will cause a fuel/air ratio imbalance (boy sure is spitting out those big college words today ... ) and draw unfiltered air into the choke housing/engine.

The 2100 would have kept it all much simpler ...
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Old 07-15-2019, 06:06 PM   #6
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Default Re: Ford autolite 2150 question?

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If there is a vacuum draw (and there should be) where the hot air tube goes to the carb, do not cap it off on the carb. It's designed to pull hot air across the bimetal spring in the choke. Also may over heat in there with no circulation. It's a very small vacuum leak and all carbs like that do it. The slight vacuum leak is compensated for when you adjust the two idle mixture screws and the speed screw. You can put a fine small screen over it if worried about dirt getting inside.


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Old 07-15-2019, 07:12 PM   #7
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Question Re: Ford autolite 2150 question?

Did you bother to read my post Sal?
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Old 07-24-2019, 09:05 AM   #8
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Default Re: Ford autolite 2150 question?

Some may find this interesting-

https://www.youtube.com/watch?time_c...&v=r-yFvunHGVk
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Old 07-24-2019, 09:20 PM   #9
poolplayer1
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Default Re: Ford autolite 2150 question?

Thanks Kultulz for the link.Very interesting video from Mikes carburetors on the difference between the ford 2100 and the 2150. They are both about the same except that the 2150 has a choke pull off and the power valve on the 2150 Is a 2 stage versus a 1 stage on the 2100.I was using a 2100 and replaced it with the 2150 and its working great.Just had to do some air/fuel mixture adjustments and all is well.
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