S&S SH Series - Introduction; Engine Installation; Oil Line Hook up; Oil Recommendations

Viscosity Ambient Temperature (°F)
SAE 20W50 Above 30°–100°
SAE 50 Above 60°–100°
SAE 25W60 Above 80°
SAE 60 Above 80°
2
OIL RECOMMENDATIONS
S&S recommends synthetic engine oil such as S&S Premium Synthetic
20W50. However a premium petroleum based engine oil such as S&S
Heavy Duty 20W50 or 25W60 is acceptable.
S&S recommends using S&S oil, as it has been designed specically for
our engines. S&S motor oil has higher concentrations of anti-wear and
corrosion additives along with high quality base stock oils that work
well in the high load and high temperature environment. Optimum
oil temperatures are between 180–230°F if temperatures exceed
250°F on a regular basis the addition of an oil cooler is recommended.
Regardless of what type of oil you select, be sure to only use oil
specically designated for use in an air-cooled motorcycle and
select the viscosity suggested for the temperature range you will be
operating your motorcycle in.
INTRODUCTION
The S&S® engine you have purchased is an air-cooled, v-twin. It is
designed to oer Proven Performance® and reliability. Specications
for both the 3
7
⁄16" and 3
5
⁄8" bore engines are found in this manual. We
have covered the most popular congurations, 74ci, 80ci, 93ci, 93ci
high compression, and 103ci, based on their original S&S production
designs. Some changes may have been made over time as these engines
have been in production for a number of years. The specications in
this manual are based on the most recent production specications.
ENGINE INSTALLATION
The procedure for installing an S&S engine is basically the same as
outlined in the factory service manual for the model of motorcycle the
engine is being installed in. However S&S engines are sometimes taller
then a stock engine so the installer must check to make sure there is
adequate clearance between the engine and all chassis components
include the frame and fuel tanks. An upgraded clutch should also be
considered, since the S&S engine will produce more power than the
stock engine it is replacing.
OIL LINE HOOKUP
These diagrams show how the oil lines should be hooked up for S&S
KN-Series engines, P-Series, and SH-Series engines.