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Some information from Nigel: "I have two 750cc Mk I engines, of only six made. I was promised a long stroke 850cc engine from Barry Hart, but it never got made. The silver motor is the one from the garage shots at the beginning of the Silver Dream Racer film. Both engines have iron liners with my own porting. 145 bhp at 11,000 rpm at the rear wheel in 1985!! The engine uses 38mm Amal carbs. Top speeds of 154 mph / 248 km at the TT Highlander and 156 mph / 252 km through Sulby Village. I bought one engine from Eric Buell when he stopped using it"
Nigel thanks again for the pics and information!
For more pics see
Rollason Barton Phoenix