Tinus89

Hey all, Finally found some time to tinker on! Further findings: - Found some non-magnetic debris underneath the valve covers. - Quite some axial play in the camshaft. Is this allowed at all? - Quite some radial play in the oil pump bearing (and the bearing came out halfway when taking off the sprocket). No axial play. Is this allowed? - Camshaft, tappets and rods look good. Two rockers show quite some wear, see pics. - On the exhaust valve side, the rockers have worn quite deeply into the rocker support. When I run the chain on the sprockets, it "sticks" to the sprocket quite severely, is that normal? The crank and oilpump sprockets are in good nick, but I'm somewhat worried about the camshaft sprocket. What do you guys think? Images are clickable for large. I really need some opinions! Debris found. Some wear on the rocker shaft (this one is the worst). What do you think? Most badly worn rocker arm Worn-in rocker support Other worst rocker arm. Camshaft sprocket

Hey all, So, after rebuilding my kitchen and doing some other stuff in the new house (such as making a proper workshop), I decided to give some love to the V11 again. The workbench: Yes, with a V11 engine! What did I do so far? I took the gearbox off and visually inspected the special clutch: fine. I took the front cover off and inspected that for signs of chain contact: none. Chain and new Stucci tensioner are in mint condition. Spun it around a few times, runs great. But.... am I allowed ANY play in the crankshaft and camshaft? Because so far I discovered I do have some play in the crankshaft... Could that cause the noise? The intent is to keep this thread alive the coming days/weeks. I'll be working on the engine in the evenings and for sure need your help:)

I understand where you are coming from and although I'm a precise wrencher, I am not too experienced and have made mistakes in the past. I am confident this is not the case though, because: The rattle started BEFORE I did anything to the bike. It slowly developed, first only being there on a hot bike, then also when cold. It was only when it got worse that I started with valve clearances, cam chain etc. Therefore I'm confident it is not caused by something I did wrong, as I did nothing to the engine before it started to manifest...

Checked, all fine. Also no play on the rocker/shaft combination and the pushrods are also in good condition.

Which has been replaced by a dual plate clutch . It's kind of special: the V11 flywheel was unavailable , so an aftermarktet Centauro flywheel was installed with the starter gear of a Le Mans and the dual clutch plates (+intermediate plate/springs etc.) of a V11. I'm not afraid of some wrenching . The sound also clearly originates from (the top of) the engine and does not change with the clutch engaged/disengaged.

Nope, it isn't. I don't have the luxury of a dust-free workshop (on the contrary), so I have to drop the sump, check what I want to check, and re-assemble the sump. I'll have to find a day to do all these checks, but that will take a while because I'm re-constructing the house (myself) the coming weeks...

That makes sense... I'll have to find some time to wrench again (just moved house and a lot of stuff needs to be done). I'll have to diagnose and then buy, as the part here in the NL costs not $40, but 90EUR

I did, nothing to see there. They were straight as a mirror and no rub marks whatsoever. They also made a nice "pop" when pulling them out of the bottom joint. That would highly surprise me. I replaced both chain and tensioner (for the Stucci type) because of the rattle, and when running the engine again after 5-10 min: rattle. That could explain the noise, but I would expect it to be louder then... When replacing the cam chain+tensioner, I did not notice excessive play, but I also did not explicitly check it. How exactly is the cam shaft held into place? I just had a look at the parts drawings, but that remains unclear to me... What kind of wear and therefore play would that introduce? Axial or radial?

Indeed it does, but... which moving parts are made of aluminium? Also: I installed a new chain and Stucci type tensioner. Could it just be running-in material from the tensioner? I only know the gray matter is not magnetic and you can't feel any particles when you run it through your fingers or put it on a cloth.

The amount of sludge/water in the oil doesn't surprise me, it has been sitting in a cold (it goes up to +/- 10deg C nowadays here) and somewhat moist shed for more than a month. My normal riding habits are at least an hour, often 2-3hrs to a day, but only once every 2 weeks or so. Sometimes more, depends on the weater. I usually cover 100-300km per drive. What would be the benefit of the above check? I just put clean oil in there, I don't really feel like pulling the sump again just so I can verify the sludge will be gone... It's an aircooled engine, the sludge will be gone after an hours drive anyway....

Sorry for not replying, I moved house and was busy otherwise (unpacking boxes etc), did not have a chance to look at the bike . Thanks! I looked around for anything on the outside, but the sound really sounds like coming from inside the engine. Yesterday evening I dropped the sump, as any metal fur doesn't have to be magnetic. I checked the magnet and the sump oil filter, but did not find any metal. I did find a lot of sludge and some water, but the bike is parked in a cold shed and hasn't run in a month, so that doesn't surprise me. I did find GREY sludge (I'm used to it being white/yellow-ish, like mayonnaise), is that normal? Here's a picture: Anyone seen something like that? My plan is to install an oil pressure gauge (it could start to rattle due to low oil pressure). If that's OK, I'll just ignore the rattle and drive it until something breaks

Haha, maybe I was unclear as well. The rattle is at IDLE as well as at REVS. Also, the rattle is there under light load as wel (cruising around). It indeed is a sound that started a while ago and is slowly increasing in how often it is present and it is becoming louder. I'll have an extremely good look at the exhaust headers for cracks, but I'd be very surprised to find one.

How can I find out if it is?

All, Thanks for the responses! I indeed replaced the tensioner AND the chain. To me, it does not sound like the sound is created outside the engine. My oil cooler mounts are steel and good. The exhaust flanges are tight, as I took them off to replace the cam chain and tensioner. Also, the sound frequency rises with the trottle/revs, which for me links it to the engine internals... Any other thoughts?

Hey all, After lurking here for a while, let's introduce myself: Martijn, 27, from the Netherlands. I own a V11 Sport Mandello Rosso since a year. Since a number of weeks, the bike has developed a strange metallic rattle from the engine under idle and load. Sometimes only when hot, but sometimes also when cold. It has been quiet while being hot recently again as well. Done so far in order to find the issue: - Adjust valves to 0.15mm and 0.20mm. The intake valves had VERY tight clearance, the exhoust was around 0.10mm. Sound, idle and low rev pickup improved significantly, rattle remained though. - Replaced cam chain and tensioner for the Stucci type with spring. Cold idle improved again, no change. Rattle remained. - A local dealer suspected a pushrod had a separated end. Checked all those last night, all fine. No excessive wear on valve ends and rockers. The bike runs and drives great. It has done 34.000km. Fresh 20W50 from Castrol. Edit; it is not the single plate clutch, as I replaced that one last year for a dual plate version. A video of the sound can be found here: https://vimeo.com/183857762 Guys and girls, I'm hopeless. What do you suspect and should I still drive it or not? Kind regards, Martijn