Old Brown Early History
Upgrades when Old Brown Was Young
Second disc brake.
Standard on European 650s. In the 70’s CRRC was using turns 3 and 4 on the banking at Texas World. Over 5000 feet of wide open throttle to a narrow sweeper into the infield. With a single disc the front brakes became soft from heat. The second disk helped slow 450 lbs of motorcycle going to turn one without wobbling off into the space.
Comfy on the road and on the track.
4.25 x19 front tire
A Goodyear 510 x 16 Harley tire on the back.
Which actually worked pretty well.
The engine was a pretty straight-forward
Wiseco 750 kit.
1974 Rejeted 38 millimeter Carbs
Foam air cleaners
2 into 1Hooker Header with not much of a baffle
Old Brown in the new millennia
She turns 45
2 into 1 pipes and BS 38mm carbs
Stock alternator XJ 700 Rect / regulator
1982 TCI sender to XJ700 Igniter box
Mag Wheels and Disks
38mm Forks from mid 80’s XJ700
XJ Triple Tree
XS Lower Bearing
XJ Upper Bearing
XJ Front Wheel
XJ Dual Disk Twin Piston Alloy Brakes
XJ Front Fender
78 Special Rear Swing Arm
78 Special Disk Brake
78 Special Cast Wheel ( one big hunk of metal )
TXA Stock Fuel Tank
The guys making Kenny Roberts fast said to use 1.5 pipes 32 inches long. My buddy Ted had a bike with open pipes built to that spec. That bike sounded awesome around TWS.
The Hooker Header and its descendants work very well with out being earsplitting
Suggested Engine Upgrades
700 CC Piston Kit bored out stock barrels Auto Machine Shop Job
38MM VM Carbs
Buba HEI System Dodge hall effect GM Module
Cleaned Up Ports
Barnet Clutch and Springs
Proposed Engine rebuild
700 piston kit
BS38 Vacuum carbs
Titanium keepers ???
1.5 inch x 33 inch header
Banshee style PM CDI- charger