the bearings are set up L to R #1 main thru #5 and same on rods L to R. uppers are at top and lowers on bottom. they have about 40-50 passes and 1500-2000 miles i'm guessing. what do you think? did they get enough oil and especially #1 main and rod?

ok, how do you add pics? why did they make this so difficult?

ok, thanks i'll try again

heres some more.

The rod bearing look good to me I would check the actual run out on the # 2 and #4 crankshaft mains to see what is causing those two main bearings to look like they do I've seen more than one SB crankshaft have run out on the #2 main Let us know what you find out

OK. I will have that checked. Let ya know.

IMO it's not a oiling problem, I'm betting the crank is a mess. It never was right judging by those rod bearings, they are messed up too. It looks like there taper in the journals?

the upper rod bearings look to be more worn in the center while the lowers appear to be more worn on the outside edges. i'll have to mic the crank when I get time.

I noticed you used upper halves on the lower mains for 360 oiling? Possibly?

What crank?

And id guess its as delivered. If this is so its the main reason I will run the high side of the bearing clearance which is ok but I always end up going 10/10 with a good crank grinder.

Some will go 10/10 from the gate.

The upper rod bearings should be the only ones showing wear, the lowers are just along for the ride. Hows the rod bearings crush? I bet not good?

the backs of the shells look like they might be alittle worn. hard to tell. what am I looking for exactly? some are black and some I can see alittle copper.

You want to see how they "snap" into the rod. Should fit tight in the rod. (crush)

And you measure the width on the rod bearing to see if it spread any. Look real close and you can see if there "spread" with your eyes right in the middle.

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If my bearings looked like that after the amount of use you described above, I'd be concerned about the source of the problem. The rods look "so-so" at best, and a couple of those crank bearings just plain look bad, maybe like temporay oil starvation.

Not sure I can add any more to what others have said. I, too, suspect the crank has issues, but would want to verify there are no obstructions in the oiling passages, etc.

when I removed the bearings from the rods they felt tight and a couple where alittle tougher to get out. I will have the rods checked as well as the crank as it has micro grooves in the journals. I plan on some oiling mods and a new pump that I never knew existed. this new pump oils according to rpm and is not done by 3000rpm like the melling pumps. suppose to be easier on bronze gears as well.

I don't understand that last comment. ANY positive displacement pump oils by rpm. The flow out of the pump is directly proportional to the pump speed, which is directly proportional to crankshaft speed. EVERY engine wet sump oil pump is a positive displacement pump. I believe all of the dry sump pumps are as well. It could be possible to use a centrifugal pump, but operating characteristics of a centrifugal pump don't match engine lubrication needs very well.

I do not understand why you would say that a Melling pump would be all done by 3000 rpm. Melling makes most of the oil pumps that are sold for the US market. There is nothing about the design of a Melling pump, or any engine oil pump of which I am aware, that would make that happen.

On the other hand, if the oil pickup tube is constricted, or if the oil gets all foamy above 3000 rpm, then something like what I think you are describing is possible, due to cavitation.

R.

I was given the info by Mopar Performance shop by me. I do not understand it fully myself. even though themelling pump spins faster above 3000rpm, it doesn't move any more oil thru the engine as i'm told. only thing I can figure is it creates too much internal pressure above 3000 and the pump bleed valve opens and it just dumps the excess oil? I don't know the name of this new pump, but it just keeps pumping and moving oil no matter the rpm and it does not work had at low rpm. I will know more about it next week.

What pump?

I don't know. He didn't offer to tell me and I didn't ask. I do know I will be buying one. There about $180.

Who did you talk to?