MoC's Build Thread - Page 107 - JeepForum.com
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post #1591 of 2044 Old 03-11-2013, 10:15 PM Thread Starter
MoC
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Quote:
Originally Posted by Skerr View Post
I have pulled both 1.08 and 1.21 MC2100s from F150s (302). Clay is running a 1.21 right now which I jetted down. Some of them have factory nipples in the base for manifold vacuum. Others do not, but it is super easy to install one. You have to look at the bottoms of the carbs to make sure they have the cut out at the bottom of each barrel.

(disregard the red line)
The yellow circles show the cut outs. Some 2100s don't have these.
The green arrow is a factory manifold vac source (going to dizzy on Clay's Jeep).
The orange circle is the nipple I installed for PCV.

Let me know if you want more info.

Since you are installing on a 360, I assume you are not using a Mr. Gasket 1937 adapter plate??
Correct that adapter is only for installing one on a 258 manifold. The 2150 was stock on the 360 so no adapter needed, just the 3 factory OEM gaskets / insulators.

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post #1592 of 2044 Old 03-11-2013, 10:23 PM
Skerr
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Quote:
Originally Posted by MoC View Post
Correct that adapter is only for installing one on a 258 manifold. The 2150 was stock on the 360 so no adapter needed, just the 3 factory OEM gaskets / insulators.
Roger. It was bugging me. Thanks for clearing me up.

Have you held both carbs up together and looked at the bottoms? I know I'm beating a dead horse...

Kerrdog
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post #1593 of 2044 Old 03-11-2013, 10:35 PM Thread Starter
MoC
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Quote:
Originally Posted by Skerr View Post
Roger. It was bugging me. Thanks for clearing me up.

Have you held both carbs up together and looked at the bottoms? I know I'm beating a dead horse...
Sure have. BTW you can tell the differance between the Ford 2100 and the AMC 2100 by the bases. The Fords have a 1/2 moon shape on the back side and the AMC's are square.

Also in your picture... The green is a manifold vac source however it was not factory for the dizzy vac advance. The factory advance was ported not manifold. The green on that carb was origanlly a manifold vac source for the choke pull off. The one in the top of your picture on the "disk" was one of the choke tube connections, the capped on with a black plug on the side by the choke was ported for the canister purge, and the one by the mixture screews was the ported for the dizzy. The little hole below the two yellow circles that is recessed in the Pocket area is where the power valve pulls its manifold vac through. Some of the newer 2150's, dont remember the year break, dont have that little hole but have a nipple on the cover that has to be connected to a manifold vac source.

Let me know if you want more info







BTW, Just messing with you Scotty!
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post #1594 of 2044 Old 03-11-2013, 10:39 PM
lucdog
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Great MoC, now he won't be "right" for weeks.

Bill

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post #1595 of 2044 Old 03-11-2013, 10:44 PM Thread Starter
MoC
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Originally Posted by lucdog View Post
Great MoC, now he won't be "right" for weeks.

Bill
Well he was asking for it Bill.

Love you Scott! BTW you didn't call back today. ..... and I thought we were friends....
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post #1596 of 2044 Old 03-11-2013, 10:49 PM Thread Starter
MoC
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Forgot one... The little hole at the top right in the pocket goes to the choke.

Under A Sun Thats See It All Before...
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post #1597 of 2044 Old 03-12-2013, 02:56 AM
REDnBLUES
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Im with Matt on the Q-Jet. I had on on my 304 for years and loved it...until I got the EFI itch that is.

1977 CJ7 - LT1/700R4 Project
2015 JKU Rubicon Hard Rock - stock
2013 JK Sahara - gone
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post #1598 of 2044 Old 03-12-2013, 03:13 AM
Matt1981CJ7
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All this talk about 2-bbl Motorcraft carbs is moot, anyway.

MoC will find a smokin' deal on a nice aluminum 4-bbl intake, and that 40 lb. cast iron POS, with the MC2150, will be history the next day.

Matt


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post #1599 of 2044 Old 03-12-2013, 08:20 AM Thread Starter
MoC
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No 4-bbl plans at the moment. I thought about going with a Elderbrock intake and carb in the early stages of planning the swap but decided just to stick with stock. After all its just a jeep and for the $ I really don't need anymore performance than I already have.

On the other hand if I hadn't been cheap and gone 4-bbl I would be running now...

Under A Sun Thats See It All Before...
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post #1600 of 2044 Old 03-12-2013, 09:40 AM
stamp32
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Does anyone have any more information on installing a vac port on the base of the carb for a PVC on the motorcraft. Mine currently doesn't have one and I would like to install one.

Chris
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post #1601 of 2044 Old 03-12-2013, 09:57 AM
lucdog
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I believe 2 members here did this. Skerr and Ken4444. It's the orange circle in the picture.

image-3962887284.jpg

Basically they drilled and tapped the base of the carb. Use a NPT tap. (National Pipe Thread) for the size of the brass nipple.

1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
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post #1602 of 2044 Old 03-12-2013, 10:10 AM
Matt1981CJ7
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Quote:
Originally Posted by stamp32 View Post
Does anyone have any more information on installing a vac port on the base of the carb for a PVC on the motorcraft. Mine currently doesn't have one and I would like to install one.

Chris
The PCV just needs a constant manifold vac source. It doesn't need to originate at the carb base.

The easiest thing to do on a stock 258 manifold is to screw a nipple into one of the intake runners.

The #6 intake runner is a good spot.

Matt
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IntakeRunner.jpg   Nipple&Hose.jpg  


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post #1603 of 2044 Old 03-12-2013, 10:24 AM Thread Starter
MoC
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There is also an adapter plate the goes under the carb between it and the manifold with a PVC connection. The older amc v'8s used one before they moved it to the carb itself. Don't know where to get one but eBay may be a starting point.

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post #1604 of 2044 Old 03-12-2013, 12:02 PM
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MoC,

Like this?
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post #1605 of 2044 Old 03-12-2013, 12:47 PM
tonkatrucksryan
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This is an amazing build!!! I just read through it all and I am subscribed!!!

New build
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