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TR2/3/3A Carb Needle Stamp...

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HighAltitudeTR3

HighAltitudeTR3

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Just curious if anyone has ever seen a SU H6 Carb needle stamped with "344"

that's what mine are stamped with and I'm trying to gain some reference on them.
(I ordered new needles from Moss already)
 
I think you have a needle from a Beck/Arnley kit. Evidently, they produced their own needles and numbering system. There isn't a 344 listed. Possibly it is 334, which equates to a SU RH needle and is the rich needle for TR3/4 using SU H6 carbs.
Here is a link to the interchange chart-https://mgaguru.com/mgtech/carbs/cb123.htm
Berry
 
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