WORKSHOP
Norton Commando Racer Rennmaschine Steve Maney Porting Manx



 

 

 

Crankcase Specs:
• Main Bearings: "Superblend"
• Cases ground out for hi-lift camshaft clearance
• Modified oil cycle
• One way crankcase breather


Crankshaft Specs as:
• Balance factor: 80%

Camshaft Specs:
• Hemmings PW3
• Oilpressure on bearings
• Inlet valve opens 50° BTDC, closes 82° ABDC
• Exhaust valve opens 84° BBDC, closes 48° ATDC
• Intake lift 9,6 mm
• Exhaust lift 9,6 mm
• Inlet valve lift at TDC 3,68mm

Connecting Rod Specs:
• R&R weight reduced

Piston Specs:
• Forget 10:1

Cylinder Head Specs:
• Valves: Nucleus
• Guides: Callisbro
• Keepers: Dural
• Springs: Norvil Tri-Rate
• Rockers: polished and lightened
• Inlet size: 34mm

Carbs:
• Amal Mk2 34mm 260Mainjets
• Longer inlet manifolds

Igniton:
• Boyer Bransden digital on 14.4V

Exhaust:
• TT Pipes with open Megaphones

Gearbox:
• Standard Commando housing
• Close ratio
• Stronger main and layshaft
• Steve Maney outrigger
• Norvil belt drive
• Norvil lightweight clutch plates

Frame:
• Slimline
• Box section swingarm
• Koni shocks
• Lightweight frame spacer

Body:
• Lyta style short circuit tank
• Manx Slimline seat
• Avon fairing

Wheel front:
• 4-leading shoe brake
• Morad rim 18"x2,15"
• Dunlop KR825 race compound

Wheel back:
• 2-leading shoe brake Triumph conical
• Morad rim 18"x2,5"
• Dunlop KR164 race compound


Topspeed:
• 221km/h