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05-09-2018, 11:31 AM | #1 |
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Join Date: May 2010
Location: Lynden, Wa
Posts: 3,548
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A/B manifold question
I am going to get an A manifold punched for my Model B carb. I am just curious if I reattach an A carb, will it matter? Or, will the larger throat opening cause issues with turbulence and vacuum?
Thanks, Mike
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1930 TownSedan (Briggs) 1957 Country Sedan |
05-09-2018, 01:31 PM | #2 |
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Re: A/B manifold question
It won't cause any problem at all. I'm doing it right now as my B carb. is in for repair so I'm running an A carb. on a bored out A manifold
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05-09-2018, 03:04 PM | #3 |
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Location: Concord CA
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Re: A/B manifold question
Hi Mike, that what I have on my slant T/S. It's run fine for years with a Tillotson and now Marvel carbs.
Make sure the shop references off the bore and not the flange. |
05-09-2018, 03:53 PM | #4 |
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Join Date: May 2010
Location: Alabama
Posts: 8,099
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Re: A/B manifold question
According to the Piranios dyno sheets site , a bored out model A intake manifold will help, even if a model A zenith carb is used .
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05-09-2018, 03:57 PM | #5 |
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Join Date: May 2011
Location: Paso Robles, California
Posts: 64
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Re: A/B manifold question
I agree with all above. Bored out A manifold with Zenith A and B, Tillotson and running a Marvel. All worked well and like the Marvel right now, one with accelerator pump and one with out. All work well.
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05-09-2018, 06:27 PM | #6 |
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Location: Lynden, Wa
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Re: A/B manifold question
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Mike
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1930 TownSedan (Briggs) 1957 Country Sedan |
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