S&S Cycle Chain Drive Camshaft Set for Harley-Davidson Twin Cam 88 Engines - Manual (Page 2)

Instruction Contents:
A.
Introduction & Specifications
B. Securing Motorcycle
C. Disassembly
D. Installing New Cams and Reassembly
E. Pushrod Adjustment
A. Introduction & Specifications
S&S
® 510C camshaft set 33-5182 is designed to be used with
the stock Harley-Davidson ® Twin Cam 88 ® chain drive system
and is an economical way to improve the performance of
stock and slightly modified street engines. The S&S 510C
cams are as quiet as stock but produce significant power
increases across the rpm range, especially above 3000 rpm.
NOTES
●
Since 510C cams are used with the stock chain cam drive
system, they are recommended for use with cylinder heads
with stock valve springs or performance valve springs with
no more than 160 lb. of seat force. For more demanding
applications we recommend the S&S gear drive cams.
● The 510C cams are compatible with the stock splined chain
sprocket used in 2000-up Twin Cam 88 engines, but may be
used in 1999 engines if the Harley-Davidson 2000-up splined
rear cam sprocket and appropriate 2000-up sprocket spacer
are used.
● Changing camshafts in the Twin Cam 88 engine is different
than in previous engines. Procedure requires use of hydraulic
press and special tools. This installation should be
undertaken only by experienced mechanic with access to
Harley-Davidson service manual and all required tools or
equivalent. Tightening fasteners to correct specifications
with accurate torque wrench is mandatory.
Special Tools Required: See Picture 1.
H-D ® #42313 Cam chain tensioner unloader
H-D #43644 Camshaft/camshaft bearing remover/installer
H-D #42325 Camshaft needle bearing remover/installer
H-D #42314 Crankshaft/camshaft sprocket locking tool
All reference to Harley-Davidson ® part numbers is for
identification purposes only. We in no way are implying that any
of S&S
® Cycle’s products are original equipment parts or that they
are equivalent to the corresponding Harley-Davidson ® part
number shown.
NOTES
●
Attempting the cam change operation without these tools
will be difficult, and can easily result in damage to the
components not covered under warranty.
● 1999 models used interchangeable ball bearings on the
outer end of both cams. For 2000 and up, the rear bearing
is a roller type and the front bearing is a ball bearing type.
It is highly recommended to update 1999 models to the
2000 and up. These instructions are for 2000-up installation.
See Picture 2.
● Possible failure may result if Loctite ® is not applied to cam
drive sprocket flange bolts. Always prepare threads for
Loctite according to instructions on container.
Failure of fasteners or parts caused by incorrect installation
can cause extensive damage not covered under warranty.
Failure of camshaft related parts caused by incorrect
installation can cause immediate seizure of engine. Engine
seizure can result in serious injury to motorcycle operator,
passenger or others.
● Original cam bearings will likely be damaged during
removal. S&S strongly recommends installing new
bearings at same time as cam change. S&S camshaft
installation kit 33-5175 provides parts needed to install
S&S chain crive camshaft sets. Support kit does not include
oil pump O-rings, which generally may be reused if in
good condition.
For 2000 models and up, the front and rear cam bearings are not
interchangeable! Ball bearing in front, roller bearing in rear.
Specifications S&S ® 510 Camshaft Set (#33-5182)
Lift Duration Open/Close Centerline TDC lift
Int. .510” 238° 20°/38° 99° 0.187”
Exh. .510” 252° 52°/20° 106° 0.178”
2
Picture 1
H-D ® #42325
H-D #42314
H-D #43644
H-D #42313
CAUTION
WARNING
CAUTION
Picture 2
Roller Bearing Ball Bearing