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Step 2
Refer to the engine centerline marked on the firewall and
center your engine on these marks. Measure the distance
between the standoff mounts, both horizontal and vertical.
Take the measurement and divide it by two. Use this
measurement to mark the positions above and below and
to each side of the centerlines for the engine mount. Use
a drill and a 1/4-inch drill bit to drill four holes at the
marked locations. Also drill a hole for the fuel line and
throttle linkages.
Step 3
Measure and mark the center of each of the two engine
mounting blocks. Then measure the same distance to each
side of the center as done on each side of the firewall and
drill a 1/4-inch hole at each of these marks. Also drill a
hole through the block to be positioned at the top for the
throttle linkage if needed.
Step 4
Attach the engine to the firewall using four 1/4-20 bolts
and four 1/4-inch split washers from the inside of the
firewall. Position the engine mounting blocks behind the
engine with the thin side positioned toward the right side
of the fuselage as viewed sitting in the cockpit.
Note
: Skip to Step 10 if using a Pitts-style
muffler, as the following modifications are only
required when using a canister-style muffler.
Step 5
Remove the marked area under the engine box with a
hobby knife or rotary tool. It may be necessary to alter
the shape of the opening to fit the particular canister and
header being used.
