Motorcraft Adapter Choices - Another Thread -
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post #1 of 6 Old 01-15-2014, 11:08 AM Thread Starter
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Motorcraft Adapter Choices - Another Thread

Let me qualify my question by saying that in the last three days I'm pretty sure I've read every posted comment about available adapters. And it has come down to the Mr Gasket p/n1937 mentioned the most, followed by the Transdapt model 2040 through Summit Racing, some limited production examples associated with Ebay kits, and even one apparently one-off that a guy had made in GA years ago.

The need:

After only two years on a rebuild of my nuttered Carter which had it running great, I'm now getting stumbling and misfiring at idle and just off-idle which is the throttle range anywhere in the neighborhood. After checking and ruling out vacuum leaks, recent spark plug change, checking the little jet screw thingies next to the venturies for blockage, etc., I've decided to try the MC 2150 I picked up for "just in case".

The actual question:

The big question is whether the Transdapt adapter is better than the Mr Gasket model? I have read some mild criticisms of the Mr Gasket. The Transdapt costs about twice as much. Is it worth it? In pictures, it looks to have a little more detail in the design and machining.

Money doesn't grow on trees for me, but I'm willing to throw down an extra $25 or so if it buys proportionately better quality.

What say ye that have swapped 2100/2150s onto the 4.2L motors?

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post #2 of 6 Old 01-15-2014, 11:11 AM
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mr gasket is cast. It did the job. I have one if anyone wants to make an offer.

'89 YJ, 4.2L, ax-15, B&M shifter, 1" BL, TJ flares, '99 intake, '91 EFI, 5.0L explorer injectors, GenRight tank & stretch, 35" ProComp Xtreme muds, 52" chevy springs rear, 44044 Ranchos front.....
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post #3 of 6 Old 01-15-2014, 11:58 AM
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i think the issue i have read is that you get little vacuum leaks form the mr gasket. i also remember something about if you smooth both mounting surfaces with sand paper on a flat surface, it fixes the trouble

I don't feel like working on anything at this time so i sold my yj.
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post #4 of 6 Old 01-15-2014, 02:06 PM
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The Trans dapt adapter will give you better results
It's a better design to allow for even ariflow into the throats of the stock intake manifold
And the mounting holes aren't slotted to give you that vacuum leak


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post #5 of 6 Old 01-16-2014, 04:41 PM Thread Starter
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Thanks guys. I like the look of the inside contour where the Transdapt piece transitions from the bigger carb size to the manifold opening enough I think I may spring the extra $$ for it.

On a brighter note, I don't have to rush the carb swap to keep the Jeep running. Just checked the "new" spark plugs and found #4 completely carboned up. I can just keep that one cleaned up while prepping for a carb swap. (and probably cylinder head overhaul if my suspicions of a bad valve guide are the source of my oil consumption).

Always something....
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post #6 of 6 Old 01-26-2014, 11:58 AM
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You will also want to put a gasket between the carb base and the fibre riser that goes on top of the adapter plate.
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