S&S Cycle Torque Plate Kit for 4 1/8 & 4 1/4 Bore X-Wedge Cylinders User Manual

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3- Apply light coat of 20W50 motor oil to threads and underside of heads of the five provided 3⁄8"-24 x 6" socket head bolts.
4- Insert the five 3⁄8" bolts thru the holes in the top plate. The heads of the bolts go into the countersinks in the top plate.
5- Place a head gasket over the five 3⁄8" bolts.
6. Insert the 3⁄8" bolts with the gasket and top plate thru the cylinder. The head gasket will be between the top plate and the cylinder.

NOTE: Install cylinder head dowels to locate top plate. The torque plate must be centered on cylinder bore so boring cutter or honing stones will not strike
the torque plate during operation.

7- Torque bolts to 20 ft-lbs. in same pattern used to install heads during engine assembly. See Figure 1. Tighten bolts in following stages:

S&S® 41/8" & 41/4" Bore Torque Sequence

Driveside

Camside

Stage I

10 ft-lbs.

Stage II

20 ft-lbs.

HONING S&S® 41/8" & 41/4" BORE CYLINDERS USING TORqUE PLATES
Honing on a horizontal hone

1- When using a horizontal style hone, care must be taken to avoid honing bore out of round. The cylinder must be supported so that the stones

cut evenly around the inside of the cylinder. Unless properly supported, the combined weight of the assembled cylinder and torque plate can
cause the stones to cut unevenly resulting in irreparable damage to cylinder.

2- A stabilizer arm (53-0014) is supplied with the plate set. The arm rests against the bar of a horizontal hone, and keeps the cylinder from rotating

during the honing operation. The two pins at one end of the bar are inserted into matching holes in the bottom plate. For stabilizer arm detail,
See Picture 1.

3- The cylinder can be honed from either end. After making a few strokes, stop and measure progress with a dial bore gage. After each measurement,

it is a good practice to alternate honing from one end then the other. This will help achieve a straight, round bore.

4- Do not re-use the gaskets from the boring/honing operation when assembling the engine.

Honing in a vise using a portable hand held hone.

1- A vice tab (53-0034) is supplied with the plate set. The tab allows the lower torque plate to be held in a vice. The tab has two pins that are

inserted into matching holes on the lower torque plate, and it is held in place with a supplied 5⁄16" x 1" bolt. For vice tab detail, See Picture 1.

2- The cylinder can be honed from either end. After making a few strokes, stop and measure progress with a dial bore gage. After each measurement,

it is a good practice to alternate honing from one end then the other. This will help achieve a straight, round bore.

3- Do not re-use the gaskets from the boring/honing operation when assembling the engine.

Figure 1