thread size

[cadetchris]

what thread size is the carburettor studs on the original manifold for a 1098?

[bmcecosse]

I think - 3/8" UNC

[cadetchris]

dosent it have two thread? on that attaches the carb and the other one into the manifold? or have i got confused again?

[bmcecosse]

Maybe - honestly can't remember.

[cadetchris]

neither can i really,

[katy]

Typically it would be coarse thread where the stud goes into the manifold and fine thread where the nuts go on that hold the carb. A lot of them are 5/16", some are 3/8"

[bmcecosse]

It's certainly UNC into the manifold - just not sure if it isn't also UNC to the carb.

[simmitc]

When you've found the thread, remember that you need half-nuts to hold the carb on.

[linearaudio]

Thought the last thread post was the "last one, honest"!!

3/8 UNC in the manifold, 3/8 UNF on the carb end.