28-10-2020, 01:47 PM
I have obtained a 24T2 Zenith, type F1372.The carb came off a running Seven as I understand it. Condition is excellent, virtually no wear and very clean. It differs from the one fitted to my AD Chummy (which works really well) in that it has an adjustable main jet (common on the tractor ones I believe) The main jet is stamped M 10 (1.0?) the adjuster has a fine thread & taper, so is it this that can adjust the diameter of the main jet down to 75 (which is the Austin Seven size)
It also has a useful bowl drain facility.
The Slow running jet is 45 (not a 50 as it is supposed to be), but this is not a real problem I hope.
More concerning is that there is no sign of an "Air Cap 150" ! what does this do? Is it necessary? Looking at specifications on 24T2 for other applications some do not have an "Air Cap" listed.
Choke is 14mm and a good fit.
Needle valve is 1.5 as it should be.
Burlen have surprisingly very few spares for this carburettor.
It also has a useful bowl drain facility.
The Slow running jet is 45 (not a 50 as it is supposed to be), but this is not a real problem I hope.
More concerning is that there is no sign of an "Air Cap 150" ! what does this do? Is it necessary? Looking at specifications on 24T2 for other applications some do not have an "Air Cap" listed.
Choke is 14mm and a good fit.
Needle valve is 1.5 as it should be.
Burlen have surprisingly very few spares for this carburettor.