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In the Main body of the stock ford 4v carb there are two little brass/tin baffles that regulate the fuel-flow in the equalizer passage way between the primary and secondary fuel bowls.

Do they need to be there? Will performance be improved or degraded if I run the carb with or without them?

Are there better jets to use then the stock ones?

Can I make this carb more fuel-efficient by changing the jets?

For REF, If you have a 66 shop manual you can go to page 10-56 figure 27, and see the baffles they are part number 9A517, (2) in the main carb body illustrated in the center of the page.

I'm asking this question because my carb does not have these. I 'm wondering if this is a dangerous situation and or causing better or worse fuel consumption. I would think the later, but dont know.

Thanks in advance..........rich
 

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At first blush I would think they're there to prevent G-induced rapid fuel flow from primary bowl to secondary bowl and vice-versa, as the 4100 (I'm assuming 4100) only has one fuel inlet.

To be honest, the last time I popped the lid on mine, I don't remember them...OF disease I guess *G*

If my assumption is correct, I'd recommend leaving them in..
 
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