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  #1  
Old 20-12-15, 00:26
Malcolm Towrie Malcolm Towrie is offline
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Richard, the main jets are 130 as shown in this link and also what I have seen in a few carbs. 190 is the air bleed (correction) jet for the main circuit.

http://www.ferret-fv701.co.uk/mnuls/...40nnipcarb.pdf

Steve, FYI, I have worked on two Ferret 40NNIP carbs that also had RE16434 stamped on them.

Malcolm
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Old 20-12-15, 00:51
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Richard Farrant Richard Farrant is offline
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Quote:
Originally Posted by Malcolm Towrie View Post
Richard, the main jets are 130 as shown in this link and also what I have seen in a few carbs. 190 is the air bleed (correction) jet for the main circuit.

http://www.ferret-fv701.co.uk/mnuls/...40nnipcarb.pdf

Steve, FYI, I have worked on two Ferret 40NNIP carbs that also had RE16434 stamped on them.

Malcolm
Thanks for the correction Malcolm.
I was going through the British Army parts list and noted them down wrongly, well spotted. Well look like Steve's carb is correct then from your confirmation of RE number.
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1943 Bedford QLD lorry - 1941 BSA WM20 m/cycle - 1943 Daimler Scout Car Mk2
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Old 20-12-15, 01:14
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Richard Farrant Richard Farrant is offline
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Looked back at the parts list and the correction jet and main jet were wrong way around. Just shows you cannnot to rely on official publications.
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1943 Bedford QLD lorry - 1941 BSA WM20 m/cycle - 1943 Daimler Scout Car Mk2
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  #4  
Old 20-12-15, 06:51
Malcolm Towrie Malcolm Towrie is offline
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The two carbs stamped RE16434 had 22747 and 19195 stamped underneath.

Two other Ferret 40NNIP carbs I worked on were stamped RE14549. They had 5537 and 6264 stamped underneath.

I have to think these are serial numbers, so Solex made a lot more RE16434's than RE14549's? I didn't notice any difference between the two RE #'s.

These were all Solex carbs, with no sign of the "Marcus" designation Steve refers to. What is that? Did Marcus make Solex carbs? Is that why the "849" number is so low relative to the above numbers?

FYI, as you can see from the 40NNIP number in the photo below, the 40 and the NNIP were cast into the carb body, and the 0 was stamped.

Malcolm

DSC-T99987small.jpg
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  #5  
Old 20-12-15, 10:01
Lynn Eades Lynn Eades is offline
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Just a wild guess, but maybe the venturi can be factory changed for a bigger different size, but this model has a 40mm bore???
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Old 20-12-15, 10:33
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Richard Farrant Richard Farrant is offline
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Quote:
Originally Posted by Malcolm Towrie View Post
These were all Solex carbs, with no sign of the "Marcus" designation Steve refers to. What is that? Did Marcus make Solex carbs? Is that why the "849" number is so low relative to the above numbers?
Malcolm,
Marcus Engineering took over the manufacture of these carburettors in later years. It was they that resolved the inherent problem with the 48NNIP carb fitted to the CVR(W) Fox, with a redesigned base plate and accelerator pump linkage. Nearly too late as the Fox was near the point of being withdrawn.
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Old 20-12-15, 21:10
Steve Mortimer Steve Mortimer is offline
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My carb.......
Attachment 78284
image.jpg
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Old 20-12-15, 21:12
Steve Mortimer Steve Mortimer is offline
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carb 2
image.jpg
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