Fei Bao F-4 Phantom II Assembly Manual - page 13
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Drill two holes on each side of the pipe mounting tabs. The first should be just in front of
the pipe mouth, the other approximately 50 mm further forward.
The tabs are positioned just above the centerline of the pipe and this is the top. Insert the
pipe into the fuselage and position the aft end about 5 mm from the end of the exhaust
cones.
Photo 19
Place the lower bypass on the engine mounting rails. Slip the pipe forward over the aft end
of the bypass. You may need to slightly trim the lower former a bit to allow the bypass to
move far enough aft to keep the rear of the pipes in position.
Position your engine on the mounting rails. Set the gap between the rear of the exhaust
cone and the mouth of the pipe to manufacturers specifications. This is usually around 20
mm. You may need to trim some material off the intakes to allow the engine to sit far
enough forward.
If required, marks the bypass for the positions of the engine mounting tabs and trim away
material such that the engine exhaust is centered on the pipe. Shims may be required under
the front engine mounting tab to insure that the angle of the engine is on line with the angle
of down thrust of the pipe.
Wh
en you are satisfied, bolt the engine to the side frames with appropriately sized wood
screws. Install the screws and then remove. Coat the thread holes with thin CA. This will
harden the wood around the screw holes themselves. Permanently reinstall the engine
mounting screws.
Drill and secure the bypass to the engine mounting rails with four wood screws.
Finally, drill the rear of the bypass for the pipe mounting straps and bolt in place. The heads
of the bolts should be on the inside of the bypass.
Connect fuel, gas and electrical lines up to the turbine.
Photo 20