Quote:
Originally Posted by retmil46
Well, best I can tell looking from the pics......
I'm screwed. 
Looking down thru the holes with the prechambers removed, you can see a nice flat surface on pistons 2 thru 5.
On # 1, there are two big divots, almost the size of a quarter and somewhere between 1/16 to 1/8 inch deep, missing out of the top of the piston. When you first look straight down the hole, it's like looking at the center section of an hourglass, and if you look to either side of the "hourglass", you can see the two big irregular-shaped divots missing.
And no, the missing chunks are not inside the cylinder.
That would explain why the intake manifold, intake valves, injectors, and prechambers were so bloody clean on an engine with 215K on it - sometime previously, someone lunched #1 piston, pulled the head to get the chunks out, and then slapped it back together. |
I would not panic just yet.
What was the compression like before you did your investigation?
How much blow by?
Did it start on 5 & then get going on all 6 after a while?
was there bad piston knock?
Can you see the bore through the hole with the piston right down? Any damage?
Normally bits of piston are spat out the exhaust & mess with the turbo.
It may have dropped a valve at some stage & been repaired. If only the crown of the piston was marked, it could be ok.
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1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
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