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APS Yamaha GPR 1200 Super Stock
To prepare for the 2004 Season I decided to give the GPR a thorough going over. First
the motor is removed and a complete tear down and cleaning is
done on the Engine. Tapping and Heli-Coil fresh
Stainless threads into the case assembly & intake mounting holes |
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Next the Crankcases are cleaned again and prepped for assembly, New O.E. crank seals are installed
with a thin bead of Three-Bond 1211 sealant around the case halves, a small dab of Stud & Bearing Loc is applied to each
of the main bearings and PJ1 assembly lube is lightly applied to the Connecting Rod bearings then Crank Cases are torqued
to spec. |
Prepping the Cylinders was next Using Kawasaki 82.25mm PRO-X Pistons. The cylinders
were honed out using a Sunnen precision Hone to achieve exact clearance on each of the cylinders. Then I chamfered the ports
and washed them up for assembly.


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Before final assembly of the front cover I re-checked the pick up trigger clearance using a dab of
clay and MSD trigger shims to set the gap between 0.070 & 0.080 clearance.
Black RTV Silicone and small tie-downs work excellent to insure that the wiring behind the flywheel stays
in place during operation.
After everything is set in place the front cover O-ring is installed and torqued  |
After Inspection of the Reed Cages I decided to Replace the Pedals using replacement Reeds  |
The Triple pipes were installed with new O-Rings / Lord Mounts / Clamps & H-D Springs
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