LMM: LMM with 222,000 tear down rebuild

[malibu795]

New coolers where put on theI dumped coolant in the oil..
Current one was new n December after I split the block I hualed to Denver..
So either the cooler got crushed by coolant pressure or the soot from the oil got deposited in. The cooler
.oil is filtered before it goes into any cooler... I cut open last 5 filters... Nothing but very sooty oil

 

[malibu795]

And coolant in the oil...... Again
Granted it's been 2 years since I put coolant in the oil

 

[SmokeShow]

skirt by until Dec. or nope?

 

[malibu795]

skirt by until Dec. or nope?

Gutting on of the trashed oem oil coolers from pervious failures..
R&Ding a member here.. though I don't have a end mill or lathe yet
Got 6"*8"*0.25 plate that will make the cover

 

[malibu795]

6*8*1/4" plate drilled sanded and cut to shape

 

[malibu795]

Never had a coolant leak there before.
Pressure washed plate no cracks bolts all tight

 

[M.A.M.]

That doesn't look like coolant...


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[malibu795]

#4/3/2 mains with 60K miles clevitte 77 H series the PS last 2-3x longer

 

[TheBac]

Oh boy...thats a lot of copper. Not good at all.

 

[malibu795]

Oh boy...thats a lot of copper. Not good at all.

I've been informed the H series bearings are not intended for high mileage application....
I did not know that..

I do know they are commonly used in alot of Engine builds and got alot of flak about not using them couple years ago..

 

[IOWA LLY]

I've been informed the H series bearings are not intended for high mileage application....

I did not know that..



I do know they are commonly used in alot of Engine builds and got alot of flak about not using them couple years ago..

Why not? Since the crank should in theory always be riding on a film of oil not the bearing why wouldn't an H series bearing work fine? What bearing are you suppose to use for a high mileage engine?


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[malibu795]

Why not? Since the crank should in theory always be riding on a film of oil not the bearing why wouldn't an H series bearing work fine? What bearing are you suppose to use for a high mileage engine?


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The P series looked substantually better with 3-4x times the mileage as these got. It's been so long that I can't remember what the OEM ones looked like when I split a piston with 222k.. they definitely didn't have full Cooper showing that's for sure

Only thing I can think of/speculate.. Is H aren't hard enough to handle sustained temps/pressures/load or higher continuous duty cycle for extended time compared to the harder stock or stock replacement bearings.

 

[malibu795]

According to date stamp these where the mains from when i split the piston in May '15 222k.. running similar ho as current... I got the truck with 98k on it

 

[jlawles2]

Going back to stock bearings this time?

Any estimate as to how long before the "mutt" is up and running? I know its hard to work on it while driving.

How long does it take you to do an engine build? I have followed this thread for a while and lost count of how many times you have rebuilt engines. While not everyone agrees with the way you build an engine, I can understand that everyone has their own style and reason for doing things.

 

[NC-smokinlmm]

Funny how the oem stuff seems better almost every time when it comes down to working these engines. I often wonder how any small performance company could possibly R&D their products. I believe it's often a guess that we get to gamble with... For a work truck I believe stock is best but your loads won't let you have that option. Hope you get the mutt up and going soon Adam!

 

[Fingers]

Never had a coolant leak there before.
Pressure washed plate no cracks bolts all tight

Looks like it leaked between the cross over to the bolt holes then out from under the heads of the bolts.

 

[Dozerboy]

^ wouldn’t that take a pretty good leak? To flood the valley enough to come through the bolt heads before the coolant cooked off from engine heat.


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[Chevy1925]

pretty sure hes talking about the mid plate. the o-ring for the cross over under the mid plate is probably leaking, then filled up the back side of the cover and leaked through the bolt heads.

 

[THEFERMANATOR]

I've been informed the H series bearings are not intended for high mileage application....
I did not know that..

I do know they are commonly used in alot of Engine builds and got alot of flak about not using them couple years ago..

Not diesel related, but I used to use the h series tri metal bearings. Last 2 engines I did with them both looked like yours with less than 20K miles on them in small block chevy's. Neither engine got worked hard either, but looked like crap inside. After I got a bad set of clevite cam bearings(couldn't even get the cam to slide into the block, miced the bearing shells thickness ,and found them all over the place varying over .005"), I stopped using them all together. I switched to ACL, and had no more problems(but I haven't done any engines in years), but I don't know if they make anything to fit the DURAMAX or not.

 

[malibu795]

pretty sure hes talking about the mid plate. the o-ring for the cross over under the mid plate is probably leaking, then filled up the back side of the cover and leaked through the bolt heads.

Have fill the crankcase up for that to happen... Talking 6-6-7 gallons of fluid..