S&S Cycle Torque Plate Kit for 4 1/8 Bore Cylinders - Manual (Page 2)

INTRODUCTION
S&S
® cylinder torque plates simulate the stress cylinders experience when installed on an engine during honing operations. A
cylinder that has been honed between torque plates holds to its installed dimensions better than a cylinder honed without
torque plates.
Torque plates for 4 1 ⁄
8
" bore cylinders can be used with either horizontal Sunnen ® type hones, or portable hand held hones.
If a vertical Sunnen ® type hone is used, a holding fixture will have to be fabricated. A boring plate/honing fixture is not available from
S&S for use with 4 1 ⁄
8
" bore torque plates.
KIT CONTENTS
Torque Plate Kit 53-0051 is for 4
1 ⁄
8
" bore cylinders. It includes the following parts:
(1) Head-end torque plate . . . . . . . . . . . . . . . . . . . . . . . . . 53-0052 (1) Torque plate stabilizer arm . . . . . . . . . . . . . . . . . . . . 53-0014
(1) Base-end torque plate . . . . . . . . . . . . . . . . . . . . . . . . . . 53-0053 (4) 7 ⁄
16
”-20 x 6” Grade 8 SHC screws . . . . . . . . . . . . . . . . 50-0191
NOTES:
●
Always observe professional practices and wear safety glasses and protective clothing when operating machinery.
● S&S torque plates are hardened and must not come into contact with cutter or honing stones during operation.
● Torque values for torque plate hardware may vary significantly from values used to assemble engine.
Improper operation of machinery or fixtures can damage motorcycle parts, tools and/or machinery components.
Improper operation of machinery and associated equipment can cause personal injury to operator and others nearby. Contact
a professional mechanic if unsure of correct procedure.
TORQUE PLATE INSTALLATION
The first step of any boring or honing operation is installing and torquing the plates to the cylinder. See Picture 1.
1- Place base gasket over end of cylinder spigot.
2- Place bottom torque plate over end of cylinder spigot.
NOTE: The bottom torque plate has a slight relief machined into one side. The plate is installed with the relief towards the base
gasket surface.
2
WARNING
CAUTION
Picture 1
Torque plates must be used with gaskets
Used for
securing
assembly
in a vise
for hand
honing.
Machined relief towards gasket
Used to keep assembly from turning when horizontal honing
Top Plate
Stabilizer Arm
Bottom Plate
Vise Tab