Make: Norton/Harley-Davidson (the Sporton)
Model: Cafe racer / grand prix roadracer
Year: 1957
Engine and drivetrain
1969 Harley-Davidson Ironhead Sportster rebored 900cc XLCH motor, .30 thou oversize bore
CCI conrods
Oversize inlet and outlet valves
Silicone bronze valve guides
Oversize AMF Harley-Davidson high compression pistons
Andrews ‘Y’ cam (57-70) with .425 lift
Joe Hunt magneto ignition system
Spitfire silicon HT cables
Weber 40 DCOE race carburetor with custom jets, tubes and linkages
Custom intake manifold and aluminum rampipes
Ramair air sock filters
Lockhart 9-row oil cooler
Facet 4psi electric fuel pump
Braided fuel and oil hoses all around
Barnett kevlar 9-plate clutch with heavy duty springs
Stock Harley-Davidson 4-speed transmission with Andrews close ratio gears
Electric start and kick start
Chassis, brakes and suspension
1957 Norton featherbed wideline frame
Ohlins steering damper
Four-leading brake shoes, 4LS front hub (Suzuki GT750 model J)
Suzuki twin pull brake lever system
Suzuki GS550 rear hub
Borrani rims and Dunlop TT100 tires
Shortened Roadholder forks
Marzocchi AG Strada shocks
Tommaselli hand controls and clipons
Paul Dunstall aluminum alloy rear sets
Body
Norton Manx aluminum alloy petrol tank, oil tank and seat pan
Norton Manx steel rear fender
Triumph headlamp, Tommaselli head brackets and custom rear brake lights
Paul Dunstall Decibel Silencer exhaust system with custom exhaust manifold
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