Rochester 4G Metering Jet 120-11-60

Rochester 4G Metering Jet 120-11-63

Your Price: $5.25

.063"

Part Number: 120-11-63

Availability: In Stock

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Description

Rochester 4 barrel main jets. Used on 4G & 4GC carburetors. Commonly known as the 4 Jet. There are two main primary jets and 2 main secondary jets in this carburetor. Price is for 1 jet. You will probably need 2.

To correctly determine what jet size you need in your carburetor test the current setup by driving at a sustained speed for 20 minutes, stop, pull a plug and check the color. Gray is perfect, white is too lean and black is too rich. Change your jets, then try the test again.

SPEC:

Thread: 28
Orifice: .063

Main Jet Sizes

Carburetor Parts > Carburetor Parts by Carburetor Types > Rochester Carburetor Parts > 4G, 4GC, 4 Jet 4 Barrel > Rochester 4G, 4GC Metering Jets

Rochester 4G Metering Jet 120-11-63

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