Engine/Transmission (1998.5 - 2002) Piston cooling nozzles - crankshaft bearings

[Wyomingcowboy]

When installing the new crank bearings I notice that the holes in the bearing don't line up exactly with the holes for the cooling nozzles. I actually noticed that the ones I took out don't line up that great either. Is this normal? Am I just getting paranoid about things or do I have a genuine concern?



TIA

 

[ThrottleJockey]

Make that motor the way YOU want it. It's yours, build it up the way it makes you happy. Get the file out if you need to chamfer those bearing holes.



Mine were clogged with headgasket. My new ones from Cummins were . 45 cents apeice. I got 12 of 'em. Cleaned out the inventory.

 

[Wyomingcowboy]

I read on another site that the holes are offset to aid with oil pressure... ...

 

[WestTN]

Cowboy, that is very likely the truth. Before reenginering anything make SURE you understand what will be affected and how it will be affected. Making changes without the knowledge of why it was the way it was can be asking for trouble. You need that knowledge to make an intelligent choice.

 

[ThrottleJockey]

How does an offset hole aid in oil pressure? The oil tube I. D. is TAPERED to create more pressure.



I dunno, maybe something to do with rotational shear? I sure want that one explained. That is good advice though. Maybe you shouldn't mess with them at all.

 

[SnoKing]

I think what he was saying was that it limits the amount of oil that can take the path. There is only so much oil volume available and it has to be managed. The offset could be an intentional limit to the amount of oil that goes that direction. SNOKING

 

[Wyomingcowboy]

Most guys get many hundred-K miles on these motors before any kind of failure. If it wasn't for that freak injector tip, I would have had no problems either. Maybe I should just leave it alone..... as stupid as Cummins is sometimes, they do know quite alot

 

[ThrottleJockey]

I think what he was saying was that it limits the amount of oil that can take the path. There is only so much oil volume available and it has to be managed. The offset could be an intentional limit to the amount of oil that goes that direction. SNOKING

Ahhh, I see. Yeah, maybe good not to mess with 'em at all. Cheap little pieces of plastic will melt your whole engine down. :{