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Luke114 
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Joined: 27 Aug 2019
Location: Washington
Points: 109
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 Topic: Zenith carb venturi
Posted: 16 Nov 2020 at 9:52am |
On an Allis C, Zenith carb has #216937 on the outer ring of the plate, and S906 on the inner. Venturi is trashed. How do I figure out what venturi will fit in this?
Were the Marvel and Zenith carbs used interchangably on the B's and C's? Does it go by year? thanks
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C in Concord
Bronze Level
Joined: 26 Sep 2019
Location: Concord, WI
Points: 109
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Posted: 16 Nov 2020 at 12:38pm |
Parts book says its part# 223808 (or 70223808) - VENTURI (size 13). Zenith carbs 212844, 212845, & 216937 all take the same part. Sandy Lake Implement Co. is your best bet. Otherwise Alex09(WI) had a 212845 on hand that could be used a as a donor, if he still has it... Can't answer the Marvel/Zenith swap question. Only dealt with Zeniths thus far. Ben
Edited by C in Concord - 16 Nov 2020 at 12:48pm
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Leave things better than you found them.
1941 Model C (restored 2020)
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Charlie175
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Joined: 11 Sep 2009
Location: Shenandoah, VA
Points: 6351
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Posted: 16 Nov 2020 at 12:40pm |
I have only seen Marvels on B/C's D10/12's I see Zeniths
Might look here:
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Charlie
'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD
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Charlie175
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Posted: 16 Nov 2020 at 12:42pm |
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page 4 of his Zeniths parts shows venturi's
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Charlie
'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD
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IBWD MIke
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Joined: 08 Apr 2012
Location: Newton Ia.
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Posted: 16 Nov 2020 at 1:20pm |
 Charlie175 wrote:
I have only seen Marvels on B/C'sD10/12's I see Zeniths
Might look here: |
X-2! They have a lot of stuff.
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
Points: 77740
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Posted: 16 Nov 2020 at 1:47pm |
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The carb used on the B and C tractors could fit several different brand tractors... You change the venturi and the main jet to adjust for different displacements and rpm needed... I think the B and C tractors had a 9/16 inch bore venturi... Double check when you buy to see that you get that bore.
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Like them all, but love the "B"s.
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steve(ill)
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Location: illinois
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Posted: 16 Nov 2020 at 1:49pm |
There were a couple years ( during the war) where marvel carbs were used on some B tractors... Dont know if the Zenith were not available, or if ALLIS was just pushing Zenith to keep the price down.
I have a list of carbs by year / model number... this is part of 1944...
Edited by steve(ill) - 16 Nov 2020 at 1:55pm
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Like them all, but love the "B"s.
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steve(ill)
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Location: illinois
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Posted: 16 Nov 2020 at 2:01pm |
I believe your carb came off a 1947 KEROSENE tractor
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Like them all, but love the "B"s.
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Luke114
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Joined: 27 Aug 2019
Location: Washington
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Posted: 16 Nov 2020 at 4:36pm |
Thank you for the info, everybody. Very interesting, especially about the possiblity of kerosene!!?? The tractor was not running when I got it, but its history indicates that it was running well with this carb. Whether it was original, or has had jets swapped, who knows.
I will check out McDonald carb. Looks like a good resource.
As an alternative, what # of Marvel carb should I look for if I can't fix the Zenith?
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steve(ill)
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Posted: 16 Nov 2020 at 4:51pm |
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my post above lists one of the Marvel Carbs used during the war..
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Like them all, but love the "B"s.
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