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My Judson kit arrived without the required carburettor jet. What size do I need?

April 26, 2017carburettor jet judson kit size

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My Judson kit arrived without the required carburettor jet. What size do I need?

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A. If you’re running a Solex 28 PCI on a pre Aug ’60 30/36hp you’ll need a 140 air correction jet, (located in the centre of the choke tube underneath the choke butterfly). You should check that the main jet (the large brass nut located under the carburettor bowl) is a Solex 120 or 122.5. If you have a 34/40hp engine with the Type II supercharger you’ll have to change the main jet to a Solex 135.