8V1200 roller tappets
8V1200 roller tappets
Having now completed over 100,000 miles on 8V1200 engines, including 20,000 miles in the T4, I feel reasonably qualified to comment on the flat tappet problem. I had one failure on my 2013 engine, which had rollers from new, but only 100 engine numbers from the change over. One roller split and damaged the camshaft so the repair was expensive. The 2011 engine did 45,000 miles on flat tappets and was changed to rollers, however because of the failure in the 2013 engine I no longer totally trust that early rollers were really good enough. So the 2011 engine in the T4 is now receiving new roller tappets as a service item every 40,000 miles. I will be in the Pyrennes in June and dont want to be worrying about it. Overkill....maybe?????
Re: 8V1200 roller tappets
When your 2011 engine was changed to rollers instead of flat tappets did you change the camshafts as well? I've heard anecdotally that the flat tappets can damage the camshafts although I guess if the camshafts look and measure fine at the time of the change, then there's no need to replace them as well?
The Norge engine for my Type 4 which has done 18K miles in total had the roller conversion done for "free" by the Guzzi dealer as the bike had full Guzzi service history.
I don't think changing the cam rollers is overkill given the mileage you do and where you're planning to drive. The engine is going to be working hard along with the brakes!
Interestingly (?) the Norge engine I'm using has a triangular oil cooler with an electric fan behind it and a temperature switch in the sump. The previous owner of the bike said that the only time the fan had come on was when he was touring two up + luggage and had done a long mountain climb. Do you know what your oil temperature gets to and have you or anyone thought about a cooling fan behind the oil cooler bearing in mind speeds will be slow and the engine working hard?
Dave
The Norge engine for my Type 4 which has done 18K miles in total had the roller conversion done for "free" by the Guzzi dealer as the bike had full Guzzi service history.
I don't think changing the cam rollers is overkill given the mileage you do and where you're planning to drive. The engine is going to be working hard along with the brakes!
Interestingly (?) the Norge engine I'm using has a triangular oil cooler with an electric fan behind it and a temperature switch in the sump. The previous owner of the bike said that the only time the fan had come on was when he was touring two up + luggage and had done a long mountain climb. Do you know what your oil temperature gets to and have you or anyone thought about a cooling fan behind the oil cooler bearing in mind speeds will be slow and the engine working hard?
Dave