I am doing a cambelt service and recommissioning my 1098. And I am realising that this is quite a different procedure to the Quattro engines which I am a lot more used to. It also requires different tools, which turn out to be a little expensive, but I am one of those nerds who gets quite excited to have yet more special tools in the toolbox to do a great job. I am looking to get a cam lock tool that allows to take the belts off, and I would like to get the opinion of people in the know on a couple of fronts: - Will that do the job for my 1098 S from 2007? - Is the tool compatible with earlier 998 - 996R stretta engines as I am still missing a tamburini in the stable and it will quite possibly be a stretta rather than quattro. So, it would be nice to have a compatible tool. - Will that be compatible with later Stretta Evoluzione models (MTS, Diavel, etc) which I understand have different cam marks on the vertical cylinder when the bottom is at TDC 1- standard cheap tool https://www.ebay.co.uk/itm/405585423233 I believe that those are only suitable for the horizontal cylinder (or later type stretta evoluzione) as the vertical cyclinder cam slots are not horizontal when front cylinder is at TDC 2 - Ducati Kamna tool https://www.ducati-kaemna.com/nockenwellenzentrierwerkzeug-848-1098-1198-alle.html This looks closer to the official tool and it looks like the slot are angled for the vertical cylinder and that it may even be adjustable. However, they list 2 different types for 1098 and 998/999 and I thought that this was essentially the same? Any reason why they would be different? 3- Desmo Racing https://www.desmo-racing.com/en/kit-for-belt-tensioner-tool-ducati-887131791-xml-363_423-7900.html This looks like the official tool. Priced accordingly too. It looks like it fits the range of Stretta. Do you know if the adjustability is done by repositioning the little triangles according to the version of engine you are working on? Any other suggestions? What would you recommend to get? Thank you
That cheap ebay tool won't work for the 1098 engines. It won't fit the vertical cylinder cams at the timing position. It will fit the Multis and all later engines where the leg of the "T" points away from the cylinder one both cylinders at the timing position.
Yeah that's what I was thinking. I was wondering if there was a similar tool that existed for the 1098, though I quite like the fanciness of the Kamna and Desmo Racing tool, but the price tag is a little steep as I don't run a service centre!
I've done the belts on my 998 a few times using a very basic tool on the vertical pot similar to this: https://www.ebay.co.uk/itm/322620418235 Cams on the vertical tend to move when the belt comes off, but if you mark them up before removal you should be good without any posh tools. Posh tools are nice, though.
Yeah - though you cannot adjust the verniers with tools like that. The design of the verniers on the Stretta is to ensure that the belts / pulleys adjust perfectly, unlike on the quattro where it is only based on the tension.
Next belts I replace, I'm going to use this method..as the cams cannot move. https://www.youtube.com/shorts/Wj1bXzylXlU?feature=share Sorry can't seem to embed the short...though I seem to remember vaguely that there is a workaround. (Does anyone know how?-thx)
How would that work on a Ducati where two belts share one pulley? It could work on the vertical cylinder I guess but not both. Personally I think all the tools actually make the job harder. Just do it by hand.
Yeah - how are you supposed to fit the vertical belt with half a belt for the horizontal in the way on the bottom pulley? Some people do mark the pulleys and the old belts and then reproduce the markings on the new belts and match the markings of the belt they fit to the pulleys. I see how that can work, although Ducati's intention with the vernier pulleys was to adapt to tolerances (manufacturing and from use) for a better timing. And such a technique does not account for this. And more importantly, that would stop me from indulging in a new tool. ;-)
Yeah valid points, I can’t remember which cylinder has the cams that are loaded, and move at the first chance...if it is the vertical the technique maybe still has value.
This is what I used on my Hyper 939 - just needed a tiny bit of fettling of a hole to fit perfectly...
It is the vertical indeed. Vertical pulley is at the back, so your technique would potentially work for the more problematic aspect. But a Desmoquattro has timing marks (pulley and head) where a Stretta doesn't. The slots on the cams is what you use for timing marks. So, you could upset the timing of the horizontal cylinder pulleys. At the very least you would need to mark pulleys and heads with paint. And they also have adjustable vernier pulleys to make for tolerances and more accurate timing. You can't get this right without locking the cams.
Never used a cam holding tool on any of my bikes : monster M800, 696, 888, 996, 999, 1098, 1198, and never had an issue changing the belts....
