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Has anyone actually found bearing damage as a result of failure?
Roy: It is very easy to tell simply by removing a valve cover and looking. With a little homework, pics are easy to find to compare old and new. You don't need to look further. As for the Griso SE, aka Tenni Griso, I believe all of them needed rollerization. So if that specific model is what someone seeks they need to verify one way or the other before they lay down the cash. John Henry
Eyes wide open so to speak.
In a word: NO.If I were to buy a Griso, it would be an 1100 (2V(4V) motor), or 8V that came from the factory with rollers.Same goes for a Norge, 2V(4V) or 8V roller.
Do I recall the 1200 Sport was available as an 8 valve in other countries? Only 2 valve models in the US.John Henry