How to Mount a Twin Cam on an Evo Hard Tail
- 1). Bolt the Zodiac adapter plate to the rear engine mount with a hex socket and socket wrench. Grind the frame mount flush with the front of the adapter plate if any part of the rear engine mount protrudes in front of the adapter plate using an angle grinder.
- 2). Bolt the adapter plate to the engine with a hex socket and socket wrench. Mark the 3/8-inch wide cast gusset that is visible through the right side adapter plate window with a mechanics' awl.
- 3). Unbolt the adapter plate from the engine. Grind the marked area of the gusset flush with the engine case casting to create spanner clearance.
- 4). Place, but do not bolt, the adapter plate on the rear engine mount. Align the two dowels included with the adapter plate in the engine bottom flange.
- 5). Slide the engine into the frame. Lift the back of the engine onto the adapter plate.
- 6). Bolt the adapter plate to the engine with the 3/8 by 2-inch Allen screws and washers included with the adapter plate using an Allen socket and socket wrench.
- 7). Bolt the adapter plate to the rear motor mount with the 3/8 by 1 3/4-inch Allen screws and washers included with the adapter using a Allen socket and socket wrench.
- 8). Wrench tighten the rear engine mount and adapter bolts to 38 foot-pounds of torque with an Allen socket and torque wrench after installing the stock, front engine mount.