How many of you have seen this before (Bone stock)

Wouldn't that have been noisy as all get out? It's not like it adjusting them takes very long! Sorry about your luck.
 
SINNER said:
Valve lash was allowed to get way out of spec. Hammered the valves through the retainers. I see it all the time on neglected gen-sets. The natural gas or propane ones seem more prone to this happening.
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Valves and rockers both looked to have normal wear?? I'm thinking a bad adjustment AND a stupid down shift. It blew the head gasket too, but I can't find a problem with it. But the head bolt holes are full of water??
 
mine ended up being a scrubbed lifter and cam lobe... exhaust #1

look @ how many threads are showing on each adjuster.... that'l show you which one is the culprit
 
Wow, I have to check mine. Manually shifting my truck (auto) from 2nd to Drive I accidentally pushed it into neutral a few times under full boost it turned 3600+ once or twice before I coudl get my foot out of it, oh and this all happened on stock springs. :eek: :eek:

my 60 lb springs are still under my drivers seat in a ziplock :doh:
 
I see this alot on Racecars , some what new to the diesel thing not sure if it is the same but be sure to check the lifter as well as the cam lobes. Loose valve train beats everything to death. What ive seen alot is yeaa nothing may be broken such as push rods , valves ect but they get work hardened and weak and break the next pass.

We had a valve spring break right when the motor shut off in the traps , you could see that hole go cold on the race pack , changed a spring and looked over the valve because the piston had a little eyebrow on it but the valve was ok. Next pass it broke the head off of that valve. Looked ok but had been flexed enough for it to loose its strangth and SNAP!! Yes , 9'600rpm will play hell with parts but still same idea.

So just give everything a once over to make sure nothing looks like it was hammered really hard or things touched eachother that shouldnt. Best of luck. Keep us posted.
 
Higher than stock valve lift on a cam likely means you need a zinc additive in the oil. I found that out the hard way, lol.

I did the Ti retainers when I swapped springs and all that stuff in. It was recommended with the cam I guess I see why now.
 
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