1990 Yamaha YZ490A
12/4/2014 6:38am
The bike upon at arrival, after finding it on a craigslist add.
The pipe was bent pretty bad in front of the frame and cylinder
The oriniginal Bridgestone M22 & M23 tires were still on the bike but dry rotted really bad.
The original chain was rusted really bad from sitting outside for years
The tear down begins
The rims were starting to corrode and were beyond repair
The bike has absolutely no compression.
A big chunk of piston was gone but was not in the motor, the piston looked like someone ran the motor with no oil in the fuel
The frame back from thepowder coaters
Excel rims laced with Buchanan stainless spokes to powder coated hubs, all this work was done by Pro-Form racing in Ontario California
The rebuild begins
The cylinder at Tom Morgan Racing so that Tom can work his magic
Almost there, just installed the Pro-Form racing pipe & silencer
All done and ready to race
Farleigh Castle VMXdN 2013
General Info
Additional Info
General Info
Model Year
Model Year
1989
Model Year:
Model Year
1989
Brand
Yamaha
Brand:
Yamaha
Model
YZ
Model:
YZ
Engine Size
Other
Engine Size:
Other
Engine Type
2-Stroke
Engine Type:
2-Stroke
Parts
Brand
Model
Additional info
Parts
Graphics
Throttle Jockey
Graphics:
Throttle Jockey
Plastic
Other
Plastic:
Other
Handlebar
Renthal
Handlebar:
Renthal
Grips
Renthal
Grips:
Renthal
Clutch Lever
Works Connection
Clutch Lever:
Works Connection
Footpegs
Other
Footpegs:
Other
Exhaust
Other
Exhaust:
Other
Clutch
Other
Clutch:
Other
Piston
Wiseco
Piston:
Wiseco
Air Filter
Twin Air
Air Filter:
Twin Air
Air Intake
Boysesen
Air Intake:
Boysesen
Engine Mods
Tom Morgan
Engine Mods:
Tom Morgan
Tires
Bridgestone
Tires:
Bridgestone
Rims
Excel
Rims:
Excel
Sprockets
Renthal
Sprockets:
Renthal
Chain
RK
Chain:
RK
Brakes
Other
Brakes:
Other
Brake Pads
EBC
Brake Pads:
EBC
Oils Lubes
Motul
Oils Lubes:
Motul
Additional Info
Additional Info:
12/4/2014 6:38am
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