Without giving too much away twin plugs and some extra porting suit the Guzzi. They have given a healthy 5% peak power gain and a 12% increase between 7,000 and 8,000 rpm. Now if I could only put a fire up my arse I might get quicker too !!
A lighthearted look at building and racing a vintage Moto Guzzi (and some other stuff too).
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