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Hi.
I need to recut my vale seats. Does anyone know if the angle is 30 or 45 degrees. The engine is a 600 99., Haynes manual says 45, is this correct.
Thanks in advance
Simon.
Dunstalls book says "all N…
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Dunstalls book says "all Nortons have 45 deg" angle. He goes on to say that this gives better self centring than 30 deg which is important where valve guides are relatively short.