Hello from West Wales. Can you tell me if it's true that the first mk1's came with higher 10 to 1 compression pistons than the 8.5's on mk2 A's ? I recall a local motorbike dealer being totally exasperated at the mk 1's which had been returned to his shop under warranty for failed main bearings. This was pre Superblends, of course, but I've been wondering for years if the alleged aforementioned pistons were a contributing factor, if indeed they weren't mere fiction. I know that 750 pistons were around 9 to 1 and also recall a very early road test of a a mk1 850 that topped 125mph, whereas the subsequent mk2 managed a lesser 115. We won't go into possible gearing as well !
![1973 Norton Commando 850 Interstate [visit 20 of 31]](http://i.ytimg.com/vi/NPAaT4zpYeQ/mqdefault.jpg)
Beautiful sounding bike. Incomparable Norton
Love that sound. Now I want an old Norton. Lol
Nice bike I have a 750 commando lately I’ve realised the the lasses like a Norton ! The old lasses 😆
Nice ride, see you've mastered that indicator switch, unlike me
Hello from West Wales. Can you tell me if it's true that the first mk1's came with higher 10 to 1 compression pistons than the 8.5's on mk2 A's ? I recall a local motorbike dealer being totally exasperated at the mk 1's which had been returned to his shop under warranty for failed main bearings. This was pre Superblends, of course, but I've been wondering for years if the alleged aforementioned pistons were a contributing factor, if indeed they weren't mere fiction. I know that 750 pistons were around 9 to 1 and also recall a very early road test of a a mk1 850 that topped 125mph, whereas the subsequent mk2 managed a lesser 115. We won't go into possible gearing as well !
sounds well, norton i mean.
Who is this riding God
Not sure that mirror is doing much for you ............