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TR2/3/3A SU H6 Vacuum Advance Fitting Thread Size

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jfarris

jfarris

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Greetings,
Does anyone know the thread size for the vacuum advance fitting on the front H6 carb on an early TR3?
Thanks in advance,
 
TR3driver

TR3driver

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I don't, but just for clarity, do you mean the threads where it goes into the alloy carb body, or where the compression nut screws onto the fitting? I believe the latter is standard 1/8" compression nut threads (whatever those are). Years ago I tried to identify the other threads without success.
 
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jfarris

jfarris

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Randall,
Either would work, I can either plug the hole or cap the fitting.
Jim
 
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