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Discussion Starter #1
Hello everybody, I try to look at this on the forum, o found some info about half bearings but its confused and i can’t put all together.

I have a 2014 1199s with 11K km on it.
At 10K the con rod bearings of the vertical C. blow out.
I rebuild the engine with a used good crankshaft and conrods with the original bearings on it. the dealer told me that "it was assembled as it was removed from the original bike, never open".
so i assume the bearing sizes was by the manual.

after 1,300 km using the bike in low revs till reach the top, the bearings blow again the day i pushed the bike a little more.
The bike its used ONLY on TRACKDAYS on circuit, not the street.

I need to rebuild again, perhaps the bearing sizes were not ok.

the manual specs only mention blue or yellow bearings depending of the A or B letter on the conrods/crankshaft.

but the catalog has also red, brown, green and black bearings.

If a measure with plastigate, once i get the size, how do I know with color to get?
i cant found any table with the COLOR and SIZE of each bearing!
In the case that goes a mix of color, for example Blue+yellow, which one goes on the lower half of the conrod and which one goes on the upper half of it?

any help about that?
Thaks to all


102 Posts

Concerning tolerances, the only time I seen dimensions is in 1098RS engine mounting procedure (Ducati Corse documentation)

I think they kept the color / size codes on Panigale.

in terms of reassembling a road engine I think that following the 1199 manual stupidly is enough

Now you can use the Ducati Corse specifications to find the good bearings color for a race application (first picture)

at least, concerning you last question:

hope it will help you
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