Before I got the intake manifold (that I bough from a fellow forum member, and took some time to get here) I used the Mr. Gasket adapter. Massive vacuum leaks...
A friend of mine has a company that lazer cuts sheets of metal. I asked him for a "metal gasket" made from 1mm thick aluminum, and he did it. 
Then, I used two gaskets, one under and one over the aluminum plate, and problem solved. 
Like Charlie said, you can also get a 1/4" phenolic spacer, and it will do the same job as mine aluminum "gasket". You will need one to use with the B intake anyway.
Bought my spacer from Mac's

Túlio Lazzaroni "FORD", Florianópolis SC Brasil.

'74 Ford Galaxie 500 292 V8

'82 Ford Galaxie Landau 302 V8

'98 Chevrolet S10 4.3 V6

'01 Ford Focus 1.8 Zetec

Ok, I do see how the four holes could be a problem.  You could tape them shut to test and see if that is causing a leak and if they are, you can fill them with epoxy or silicone.

What you're showing in the second picture is a problem.  Combined with the fact  that you're using an open gasket which doesn't come close to the throttle bores and the adapter is open, I bet that is where the problem is.  I'm not able to find any other style of adapter with a brief search. Since it is just a mismatch between the adapter and carb, you could try a thin 4-hole spacer to go between the adapter and carb.  That should ensure a good seal.  I don't know if the problem shown in picture two is really a problem if a four hole spacer is used, which will seal the throttle bores.  The spacers I see don't look like they would match that carb in the area shown in picture 2.





Lawrenceville, GA

I'm fairly certain I did the rebuild correctly. Here are a few pictures of the areas I think its leaking from:

The arrows point to where the exposed holes show gasket material that cloud easily deflect.


And here is where there is a direct path to the throttle plates:

Looking at the picture of the adapter, I can't see why it wouldn't work unless it is warped or is hitting a fitting on the manifold which prevents it from seating properly.  The extra holes shouldn't matter because it looks like it will seal around the perimeter.
Since the carb was rebuilt, are you sure it is back together correctly?



Lawrenceville, GA

Yes, it is! I got help from many people and they all said vacuum leak as well. I removed the carb this morning. That adapter has more holes than swiss cheese. It looks like its not allowing sufficient seal of the gasket and it's leaking past those areas. So…either a much more suited adapter is in order (is there one?) or a manifold. Anyone got a B manifold that's still good?

Vacuum leak?



Frank/Rebop

Bristol, In ( by Elkhart) 

Well, testing Day 1…Fail  Haha

I put the carb on tonight, here's how it went.

The new primaries came in the mail today (48 and 49), and I put the 48s in the carb. I didn't touch the secondary jets, they are at 62. I made sure the floats were set at the correct level, which it appeared they were. (They are original and I didn't need to adjust or replace them.) I took my old 2100 off, put the adapter on (backwards 1st time around of course, front facing rear, etc. etc.) and bolted the carb down with all new gaskets. Primed it, fired her up and all I got was this:

The engine would immediately rev up to about 2600 rpm and then rev back down and stall. Any suggestions on what has gone wrong?

Well, I just ordered the jets, got both 48 and 49 to experiment with. I'm going to use the Mr. Gasket 1933 adapter to test things out and make adjustments. If I like it enough I might just go out and buy a 4 barrel manifold.

Don't mention it!!

Just one thing:
like your carburetor is older than mine, and I don't know what you have as booster ventury, I suggest you have a few jet sizes to play with on the primary side. 
At least two sizes: 48F nd 49F. 
My carburetor is basically all stock as it left the factory, the only thing I changed was the choke I converted to manual with parts from Autolite and Motorcraft 2100s. 
My primary booster is marked DK as it should be for the car it was pulled out, a 1965 Galaxie with a 352. Your primary booster may be different, and that will affect the jets size that will work for you.



Túlio Lazzaroni "FORD", Florianópolis SC Brasil.

'74 Ford Galaxie 500 292 V8

'82 Ford Galaxie Landau 302 V8

'98 Chevrolet S10 4.3 V6

'01 Ford Focus 1.8 Zetec

Sweet! Definitely gonna try it on my 292. Thanks for posting that. I'm in the process of rebuilding right now. Can't wait!