HarleyHelp.com - S&S carbs

S&S Carburetors

The S&S Super E & G carburetors are extremely versatile in the Harley-Davidson industry.
They can be tuned and adjusted to perform very well on just about any v-twin motor available.

Below are the jetting recommendations for tuning S&S carburetors for various engine sizes.
The jetting in your carburetor should fall somewhere within the ranges indicated within the charts for your engine size & type S&S carburetor.
Jet sizes & idle mixture tuning / adjustment will vary with different engine sizes & types of air cleaners, exhaust, altitude, air pressure & humidity.
There are no exact settings, only experimentation and fine tuning will make your bike run its best.

This S&S carburetor jetting / tuning guide has been created as a starting point for jetting and proper tuning of S&S carburetors.

Here is a complete copy of the S&S carburetor and air cleaner assembly and adjustment book (.pdf file) from S&S.
Installation and Jetting Instructions
for S&S Super E and G Series "Shorty" Carburetors

you will need to have a .pdf file reader.
if you don't have one, download one for free

S & S Carburetor Jetting and adjustment chart

Carburetor
Type

Engine
Displacement

Idle Mixture
Screw Setting

Slow Jet
Size Recommended

Intermediate Air Bleed Size Recommended

Main Jet
Size Recommended

1-7/8"
Super
A, B

55ci to 84ci

86ci to 93ci

96ci & up

1-1/4 to 1-3/4 Turns

.028 - .033

.031 - .036

.032 - .036

.066 - .076

.074 - .084

.078 - .088

1-7/8"
Super
E

55ci to 74ci

74ci to 84ci

84ci to 98ci

1 to 1-1/2 Turns

1-1/4 to 1-3/4 Turns

.0265 - .0295

.028 - .032

.0295 - .033

.062 - .072

.066 - .076

.072 - .082

2-1/16"
Super
G

74ci to 86ci

86ci to 93ci

96ci & up

1-1/4 to 1-3/4 Turns

.028 - .031

.0295 - .033

.032 - .036

.066 - .076

.072 - .080

.074 - .088

2-1/4"
Super D

88ci to 96ci

98ci & up

1-1/4 to 1-3/4 Turns

.031 - .036

.076 - .086

.080 - .098

Two-Throat

55ci to 84ci

86ci to 93ci

96ci & up

2 to 3 Turns

.028 - .031

.030 - .032

.032 - .033

.040 - .052

.046 - .054

.050 - .056

.052 - .060

Early Style
G, GA,
GB

55ci to 84ci

86ci to 93ci

96ci & up

1-3/4 to 2-1/4 Turns

.028, .030, .034

.030, .034, .036

.034, .036

.052, .055, .059

.068 - .078

.076 - .086

.082 - .092

Late Style
GAL, GBL,
MGAL

55ci to 84ci

86ci to 93ci

96ci & up

1-1/2 to 2 Turns

.028, .031, .033

.031, .033, .036

.033, .036

.068 - .078

.074 - .084

.080 - .088

Late
Style
MGL

55ci to 84ci

86ci to 93ci

96ci & up

1-1/4 to 1-3/4 Turns

.029, .031, .033

.031, .033

.033, .036

.040

.068 - .076

.072 - .082

.076 - .086

Note: All settings are generalized and should be considered a starting point.
Final jetting will vary depending on engine size, air filter, exhaust, cam, compression and altitude.