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Which Carb?


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I think my carb is about done. As far as I can tell, last overhauled in1987. 

There are two options. 10-3878 and 10-4164-1. The plate on my current carb is so worn I can't really see which is currently installed. 

What's the difference in the two? One better than the other?

The book says either will fit the O-360 A1D.

Google isn't much help.

Thanks.

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The one you want is the 10-4164-1. It has a higher fuel flow than the other, which our O-360s in the doghouse need for cooling. The overhaul shop should be able to make any changes to yours to make it become a 4164-1 and make a new data plate if necessary.

There is actually a third option, which is the 10-3878-M. That is basically the original carb modified for the Mooney M20C with the higher fuel flow of the 4164.

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2 hours ago, Rjfanjet said:

I think my carb is about done. As far as I can tell, last overhauled in1987. 

There are two options. 10-3878 and 10-4164-1. The plate on my current carb is so worn I can't really see which is currently installed. 

What's the difference in the two? One better than the other?

The book says either will fit the O-360 A1D.

Google isn't much help.

Thanks.

You definitely want the higher flow carb 10-4164-1.  There is another version 10-3878M - this is 10-3878 that has been modified to match the flow of 10-4164-1. 

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