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Old 06-30-2008, 11:04 AM   #1
GPLD
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Default Mc2100/mc2150 Swap

I got a motorcraft carb from a friend. He believes it is a 2150. How do I tell the difference between a 2100 & 2150? He was going to put it on his 258 but put in a V8 exploder engine instead.

There is a spot on the body that has a couple small holes & is surrounded by 3 threaded holes (sorry no picture). What goes here?

It has 1.08" venturies.

I think the elevation around here is around 1000'. I know I don't need the altitude compensation but will it hurt if I do?

Thanks
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Old 06-30-2008, 11:35 AM   #2
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the threaded holes----my guess with out a picture is a place for the electric choke.

others could be vacuum ports...

they are easy to tune carbs....
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Old 06-30-2008, 07:20 PM   #3
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If I am remembering this correctly, the 2100 is considered the low altitude carb and the 2150 is the high altitude version. Biggest difference is in the jets. I have the 258 and am running with 42's.
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Old 06-30-2008, 08:55 PM   #4
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I don't know what year they went to it, but after a certain year model Ford went to all 2150s. If you buy a rebuild kit, it will usually say 2100/2150. I may be wrong, but all the 2100s I've seen have a smaller body. The 2150 either has the altitude compensator and/or more body at the rear of the carb.

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Old 06-30-2008, 09:28 PM   #5
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http://www.luanjp.com/mods/enginestuff/mc2100.htm





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Old 07-01-2008, 04:29 PM   #6
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Hopfully the picture made it.

Between the fuel inlet & the power valve.

Don
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Old 07-01-2008, 05:17 PM   #7
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1.08 = 2100

1.21= 2150
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Old 08-12-2008, 08:33 PM   #8
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That is a 2150, you can see the long cylinder in the back w the 3 screws, the is the aneroid valve... aka the altitude compensation device.

Also on the 3rd pict at the bottom, the hose fitting is for the PCV valve, not the intake manifold. The PCV is mounted horizontal.

as for "what is this come from" it is the fuel inline.... that seems to be jetting from the top, but you can guess it on the first pict.... it bend 90 degrees to the side. ( I have worked on those beast for too long)

the 1.08 and 1.21 version are the venturi size. 1.08 was mounted on V8 wagoneer (mine) california models. If you look on the side by the throttle actuation lever, there is a stamp w the venturi size. I can find a pict somewhere
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Old 08-13-2008, 02:48 PM   #9
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Here is a pic of the carb I have. I am missing the circled part. Do you know if it comes in a carb rebuild kit?

Don
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Old 08-20-2008, 11:08 AM   #10
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Quote:
Originally Posted by GPLD View Post
Here is a pic of the carb I have. I am missing the circled part. Do you know if it comes in a carb rebuild kit?

Don
check w your favorite reseller after you provide the carb tag number.... Not too sure about what it is....
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Old 08-25-2008, 08:09 PM   #11
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I don't show that part in any of my diagrams. Unless it is some sort of an external vacuum operated power valve. I don't show anything between the accelerator pump and fuel intake in my pictures. But I also don't see a power valve housing below the accelerator pump either. Does the carb have a tag number on it?
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Old 08-27-2008, 11:08 AM   #12
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Quote:
Originally Posted by lah 87YJ View Post
I don't show that part in any of my diagrams. Unless it is some sort of an external vacuum operated power valve. I don't show anything between the accelerator pump and fuel intake in my pictures. But I also don't see a power valve housing below the accelerator pump either. Does the carb have a tag number on it?
E4TE-APA 1984 F250 302cid

The part is called (valve assembly(accellerator pump)" in Fords words. Of course Ford Discontinued that part in 1998. I have the Ford part no. at home. E3TZ-9002A I believe.

Thank you for your help.

Don
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Old 08-27-2008, 11:09 AM   #13
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Quote:
Originally Posted by lah 87YJ View Post
I don't show that part in any of my diagrams. Unless it is some sort of an external vacuum operated power valve. I don't show anything between the accelerator pump and fuel intake in my pictures. But I also don't see a power valve housing below the accelerator pump either. Does the carb have a tag number on it?
E4TE-APA 1984 F250 302cid

The part is called "valve assembly (accellerator pump)" in Fords words. Of course Ford Discontinued that part in 1998. I have the Ford part no. at home. E3TZ-9002A I believe.

Thank you for your help.

Don
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Old 09-09-2008, 11:20 AM   #14
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I found one. An old local shop had one. Now to rebuild.
It's an accelerator pump relief valve. Apparently they were used on the "feedback" type carbs for a few years just before fuel injection was put onto everything.

Don
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