harlequin Posted April 19, 2022 Report Share Posted April 19, 2022 I have recently overhauled the Stromberg carburettors on my early CF TR6 (CF631), and while trying to track down a rough running issue I have found that I have mixed one of the air valves up with an air valve from a spare set of carbs that came from a Stag. Although the air valves look to be identical they are obviously not. One pair has 12 cast on the inside and the other pair has 14. I took a guess and have now got the pair marked 12 fitted which has improved matters, but I am not confident that I have the correct valves. Can anyone throw some light on which pair should be fitted before I spend an afternoon changing to the 14s only to find them to be wrong and then swapping back again. George Quote Link to post Share on other sites
poolboy Posted April 22, 2022 Report Share Posted April 22, 2022 I couldn't tell you which came out of which. I've seen air valves with single digit numbers, numbers in the teens and numbers in the 20's..all from TR6 carbs Quote Link to post Share on other sites
harlequin Posted April 22, 2022 Author Report Share Posted April 22, 2022 Thank you Ken It was a 1st year apprentice mistake, I must have mixed up the air valves when I was swapping the needles over. I was surprised how rough it run with the mismatched valves even though they appear to be identical. I shall stop tinkering and drive it this summer with the 12s and maybe swap about next winter George Quote Link to post Share on other sites
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