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Copy that... So my '09, like yours is in the running for needing this roller upgrade...? And I was in such a good mood.Thanks,Rob
Ride it.Check the clearances often looking for abnormal gap change. It is so easy to do that a lawyer could do it. And pulling the cam box is not that bad of a job either.RideEatSleepChange oilCheck valvesRepeat the first three often.
Whoa! Hang on, no, let's do a bit of ancient history.****Finally. Don't panic. Keep receipts for all work performed and keep a keyed ear on the engine. Check your valves regularly and if they suddenly start to open their gaps appreciably don't just ignore it and hope the issue will cure itself. It won't! You will also find performance will be adversely affected in the ways I've described before. It is possible to detect failure in the early stages and I find it mind boggling that some people actually manage to ride their 8V's to death. Pete
Look, I'm rollerising Mark's bike on Tuesday. He's good with a camera. Perhaps he could be persuaded to take some pics while I'm doing the swap and I can do a photo essay. If anyone is interested? If it's just going to precipitate a load of hard-done-by bleating I won't bother.
Keeping the engine timed when installing a B or D kit is easy. Set piston up at TDC compression, relieve the tension on the cam chain and slide the sprocket off the cam and tie it to the breather plate orifice in the head like so.Look, I'm rollerising Mark's bike on Tuesday. He's good with a camera. Perhaps he could be persuaded to take some pics while I'm doing the swap and I can do a photo essay. If anyone is interested? If it's just going to precipitate a load of hard-done-by bleating I won't bother.Pete
That was a nice summary of events that was very helpful to me in understanding this issue. I have a '09 Stelvio with only 12,750 kms on it, of which I've only put about 1,750 in the short time I've owned it. The cement mixer noise has always alarmed me but knowing that it's normal for that engine has allayed the fear that anything is wrong, based only on the noise. I set the valves right after buying the bike and have checked them twice since and they are holding their settings. One thing that does concern me is the tappets do not stick up a uniform length above the surface of the head casting. One of them is almost flush with the surface; I can just catch it with my fingernail. Does this necessarily mean abnormal wear somewhere down below? Thanks in advance.
OK, this clarifies things for me! I think, now, that my engine is still ok. Other than the noise and the uneven tappet heights, I don't seem to have any other symptoms. Yet. I may still elect to rollerise it on my own dime. Anyone know what that runs, parts and labour in the US?
Once the pressure is off the tensioner blade you can wriggle the sprocket out of the chain, drop the chain down the tunnel and then pull the camboxes and head.
I would think that a small oil sample could easily come back negative for dlc even if some had gone missing from the tappets. It could be deposited anywhere within the oil circuit and not necessarily be in solution in the sample. I think the only way to catch a failure in the early stages is due diligence as Pete has described. Pay close attention to valve gaps and breathing behavior such as tb balance and idle behavior. Certainly an oil analysis can't hurt , but it may only show dlc after it is too late. Dave
Well today's the day, I'm gonna roll my own. Finally a chance for some wrench time to get my griso rollerised, results will be forthcoming. Dave