Silverline main bearings with oil groove at the case side

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GreenTom:
I use those bearings for a while because they have heavy center main bearing (not crappy light like KS or Mahle these days). But I started to wonder if the oil groove at the back (engine case side) won't cause the oil starvation at con rod big ends.
 Did any of you guys had any issues with silverline back grooved main bearings?

Donny B.:
Gary Berg seems to like them...

Joel Mohr:
It's all I use....no problems...

rick m:
If anything the volume of oil on the back of the bearing helps.  Keep in mind that PRESSURE is what feeds the rod bearings and not just volume. If all your tolerances are good and the bearing saddle to bearing is snug as a result of having the right line bore, there should not be any issues.  I use these bearings too and my rod journals and rods look great with each tear down and inspection.  The key is having great oil pressure.  My motor runs at 40-45 lbs when at 195 - 210 temps and I am only running a 26mm pump.

Rick M

RhoadsVW:
I use the Silverline all the time with no issues. But when I install them I push the bearings, both the ones behind the gears and the center as far against the dowel as possible towards the flywheel. The new cases seam to have the oil hole towards the flywheel a bit more than older cases so the outside oil groove on the bearing might not line up completely. I have had to do this with all manufactured bearings with the new cases.
                                                                                                                                                       Dave Rhoads

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