Ralph Whitaker Posted March 23, 2019 Report Share Posted March 23, 2019 Just re building a set of TR4 carburettors and they are fitted with needles which have 369 on the stem. All the literature in Moss and Rimmers says that the needles should be SM as standard, RH for rich, and SL for lean. Is this a new identification system and do my needles conform to some earlier system or have I got incorrect needles. Any ideas?? Cheers, Ralph. Quote Link to post Share on other sites
Hamish Posted March 23, 2019 Report Share Posted March 23, 2019 (edited) Whilst the experts turn up to help you. Does this add to the mix ? https://mgaguru.com/mgtech/carbs/pdf/ba-su_needles.pdf looks like 369 could be a becks arnley SM equivalents Edited March 23, 2019 by Hamish Update Quote Link to post Share on other sites
Ralph Whitaker Posted March 23, 2019 Author Report Share Posted March 23, 2019 Well done that man. My question answered in 10 minutes. The carbs indeed came off an American import, but I didn`t know anyone other than SU ever made needles and I had never heard of Becks Arnley. At least I now know that I don`t have to buy new needles. Many thanks, Ralph Quote Link to post Share on other sites
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