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Ca zenith venturi
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ACCA52 View Drop Down
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Joined: 26 Jul 2021
Location: Grove City PA
Points: 14 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ACCA52 Quote  Post ReplyReply Direct Link To This Post Topic: Ca zenith venturi
    Posted: 10 Jun 2022 at 7:28pm
I have two ca zenith carbs with different venturis. One is a 13 then other is a 16. Is one better than the other. Tractor seemed to run very ritch with the 16 in, have not tried the 13 yet, as just rebuilt carb.
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ACCA52 View Drop Down
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Joined: 26 Jul 2021
Location: Grove City PA
Points: 14 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ACCA52 Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jun 2022 at 9:06pm
I found a site that lists the 13 as the stock venturi, so going to put it in and give it a try

Edited by ACCA52 - 10 Jun 2022 at 10:31pm
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 81309 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jun 2022 at 10:09pm
I think the number is the BORE of the venturi in millimeters... 13 mm would be just over 1/2 inch ( .511) ...... the CA is a 125 cubic inch motor... If you had the same carburetor on a 150 cubic inch motor ( example)... then it might use the 16 mm venturi
Like them all, but love the "B"s.
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PaulB View Drop Down
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Joined: 12 Sep 2009
Location: Rocky Ridge Md
Points: 4753 		Post Options Post Options   Thanks (0) Thanks(0)   Quote PaulB Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jun 2022 at 6:05am
Which one I'd use would depend on what your use would be. Farm use I'd go with the 13. If all that you do is pulling and you've run out of power, then go with the 16 and get the A/F mixture correct. If the 13 give you the power that you need for your selected gear and tire size then stick with it. In pulling you can overpower your gear and tire size and do worse than having just a little less power.
If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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