50+ thread

Lots of Mayo, no cheese?

 

Last time I had metal imbedded in bearings I had wiped a lobe on my cam shaft

 

That's definitely not a good sign to see that much metal in the pan , something in that engine isn't happy !!


Noting the mains and rod bearings show unusual wear so quickly I would say the crankshaft wasn't machined/ polished properly . Was the crank mic'd then used plasti gauge so to confirm bearing clearance??

How are the piston skirts or the rings ?? , also any unusual scuffing in the cyl bores??




Did you run break in oil on first start up and changed the oil after initial break in ???

 

Shouldn't see that on a modern Hydraulic roller cam , they're made from billet steel not like the flat tappet cams that are made from cast iron which is softer

 

Lifter failure maybe?

 

Is this the same engine that was having low oil pressure problems a couple weeks back?

 

All my experience comes from bbcrysler engines and as long as the pump was good. Anything oil pressure related was valve train related.

 

Screwed up bearings brings back memories.
The early days and a stout little 440.
Same track same lane a little stouter 440 and bigger meats. Same car with many more dollars spent!

 

I will take a closer look.

 

No unusual scuffing in the cylinder bores.
Homegrown crank polishing. The crankshaft mains were mic'd as well as the journals. I thought that the bearings were a bit tight when I installed them. The crankshaft turned OK but wasn't turning freely. I also checked for proper bearing clearance using plastigage after polished the crankshaft. A small bit of scoring on the front main.

The oil pressure gauge read ~50psi at startup and ~2 psi when the engine went to operating temperature.

Any way something isn't right and I will find whatever mistake that I made and when I do it will get rebuilt the right way.

Edited to add: I ran the engine with the oil pump not primed. This caused a no oil pressure wen the engine was running. I thought that I caught it in time as I went back into the oil pump filled it with grease and reassembled, oil pressure returned. With the engine running with no oil pressure the crankshaft journal bearings got the damage. Crankshaft journals are fine.

 

Yes the same engine, now just getting around to disassembling this freshly rebuilt engine.

 

Shim and bucket type lifters, they are solid.

 

exactly what i know too. you are point on the ones here were in the woods but one out around houses and neighborhoods are very suspect

 

it just finished here. went to bed at 2:30am it was wind and rain. just got up and @5-6 inch of snow. daylite people said it was really slick this morning. should be headed up your way

 

8 months here.

 

There is no amount of ketchup or mustard that would make that look or taste good.
You ruined good peanut butter.

 

That’s just wrong!

Afternoon friends, took the dog for a walk. Nice day, just a little chilly 29*

 

Look at all of those shavings on the oil pick up screen... something that rotates did a self-clearancing routine. I'd look at the cam lobes again and measure them with a mic. It could even be the gears in the oil pump itself. The whole engine needs to be torn down and hot tanked & pressure washed again to get ALL of that crud out of the oil galleries.