Oil samples

[dbl overdrive]

(05-02-2016 )Rawze Wrote:  

(05-01-2016 )dbl overdrive Wrote:  Runs great. Although it is a spike in copper and aluminum, its not very much.
You guys got me thinking and with 958,000 miles I think it's time for new cam bushings.
I will tear it down this week and see how they look.
I think my truck (the guinea pig) will like it and I need the education. Lol.

At 900k + miles on it,.... If the cam bushings are gone,.. more than likely the rest of the head is going that way too. Pull the intake manifold off and look at the valve stems on a few cylinders to see if they are seeping oil. As well,.. check the clearance of the detent position of all the engine brake rockers AFTER you have set them all to 0.276 like the book specifies. If any are less than about 0.030" or so movement between the detent position and the valve,.. the head is worn out.

I do have seepage on the valves that I can see and I pulled the injector cam and the bearings are shot.
I've decided if I'm replacing the head, I'm going all the way with it.
My company has a cummins tier 1 mechanic on full time at the shop that I've become good friends with and he's going th help me do the inframe on this truck. This is what he does for a living so I trust him.
Looks like I'm going to get some education on this one.
First thing we did is dump some dye in the oil, using a special light while tearing it down will reveal any cracks or leaks.
I'll get some pics as we go but should be back up by next Wed or Thurs I hope.