Plane bearings crankshaft

Hi there,

I'm trying to revive an old XJ900 (31A), and I need to replace the crankshaft bearings (see picture n°3). In the manual, and in the picture there are two types of bearings: one (top) is plain, the other (bottom) one has a groove and three holes in the middle, probably for lubrication purposes. I ordered 5 of each, keeping in mind the colour codes, but the company sent me 10 grooved (bottom) ones, saying the plain ones were superceded. I tend to believe them as more lubrication can't be a bad thing, but I'd like a second opinion before I try to put everything back together.

 

The fiche for the US XJ900RK show that the main bearing has been superseded as you were told.

 

Sounds entirely plausible to me. The lower shells shouldn't cause any problems. More lubricative potential is always a good thing when parts are in contact.

 

Thanks for your answers.