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Old 02-21-2012, 07:03 PM   #241
natedog39
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Quote:
Originally Posted by TwilightZone View Post
Many diesels require anti-cavitation additives for coolant. Wonder if it was coolant ?
While a PH balanced coolant is good for any engine, it's wet liner blocks that "require" additives.

Usually via a coolant filter change.
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Old 02-21-2012, 08:10 PM   #242
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I'll have to look into the pH balanced coolant.
From the research I've done, cavatiation seems quite prevalent on PowerStroke diesels. While it's possible on others it doesn't really seem to be a reoccurring theme.

As for the oversize (extra thick) head gasket - I'm not really concerned since Cummins offers them and tons of the high-power guys use them. I'm only at the first oversize head gasket and there's one more to go. There was no indication that anything was wrong with the deck, head or head gasket surfaces. I think this problem was the original issue before I even got the engine. There was no indication of head gasket failure but the #4 piston was worn. Most likely from the bore being washed clean of oil by coolant.

Milling the block and or head seems to be a quite common and acceptable practice on these engines. The o-ringed head gaskets and fire rings are for the super power guys - not what I'm doing.

Don't know if they're going back to stock cylinder/piston sizes or staying with the .020 over. I didn't ask. Honestly, I don't really care so long as the engine is reliable, fuel efficient and powerful.
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Old 02-22-2012, 03:24 AM   #243
madeouttaglass
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So all that goo in the oil was combustion gasses and there was never coolant in the oil?
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Old 02-22-2012, 03:34 AM   #244
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Originally Posted by madeouttaglass View Post
So all that goo in the oil was combustion gasses and there was never coolant in the oil?
no there was a small hole in the 4 cylinder...A pin hole that was leaking coolant in to the oil. below the piston at TDC and above the piston at BDC.
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Old 02-22-2012, 05:59 AM   #245
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got it. damn.
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Old 02-22-2012, 09:31 AM   #246
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Congratulation on finding the problem...................and sticking with testing/investigation vs parts replacing...........new head would have been one expensive failed test.
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Old 02-23-2012, 05:32 PM   #247
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Old 02-23-2012, 09:32 PM   #248
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Good read.......start to finish this evening and I'm not a diesel guy!

Joz, I gotta buy you a beer sometime just cuz!!

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Old 02-23-2012, 09:37 PM   #249
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Damn, of all the places I would have never looked for a leak...
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Old 02-24-2012, 05:43 AM   #250
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Curious about the fix...Do you just re-sleeve the cylinder or is it a block issue??
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Old 02-24-2012, 07:37 PM   #251
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Resleeved all 6 cylinders just for good measure.

The block is in my garage now; reassembled and ready to be installed tomorrow. Hope everything works perfectly.
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Old 02-26-2012, 10:25 AM   #252
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Quote:
Originally Posted by Joz View Post
Resleeved all 6 cylinders just for good measure.

The block is in my garage now; reassembled and ready to be installed tomorrow. Hope everything works perfectly.
Better to be safe.

Unless you enjoy limping home from long trips and pulling motors every couple of months.

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Old 02-26-2012, 10:30 AM   #253
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Damn, of all the places I would have never looked for a leak...
seen it on ford engine and some others..not "super " common..
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Old 03-01-2012, 10:07 PM   #254
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Well, the engine went in last weekend but as soon as I got it warmed up a new problem presented itself. The gasket sealing the push rod gallery was leaking. And the only way to replace it is to remove the injector pump. Which means a ton of other stuff had to be removed.

Well, after a few hours work each night she's all back together and running tonight - with NO LEAKS and NO SMOKE (well relative for a diesel). AWESOME! Everything checked out okay on a short test drive tonight so I'll be taking her to work tomorrow. I hope all really is good now.....
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Old 03-02-2012, 03:45 AM   #255
c.herman126
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Originally Posted by Joz View Post
Well, the engine went in last weekend but as soon as I got it warmed up a new problem presented itself. The gasket sealing the push rod gallery was leaking. And the only way to replace it is to remove the injector pump. Which means a ton of other stuff had to be removed.

Well, after a few hours work each night she's all back together and running tonight - with NO LEAKS and NO SMOKE (well relative for a diesel). AWESOME! Everything checked out okay on a short test drive tonight so I'll be taking her to work tomorrow. I hope all really is good now.....
I hope she runs great today!
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