Oil analysis results on the 8v92

[RickB]

Here are the results in ppm:

Aluminum   9
Chromium   3
Copper     4
Iron   30
Lead   12
Tin  5
Silicon   17
Potassium   <2
Sodium   10
Moly   3
Water <0.1
Oxidation   5.3
Viscosity @ 100    14.5
Glycol   ND
Fuel   <2.0
TBN    9.2
Nitration  <2.0
Soot  0.2

Cummins De Pere says these amounts are all normal. Anything look out of the ordinary to any of you?

One thing that concerns me is they identified the oil as Shell Rotella T  15/40. I would/ve felt more comfortable with 40 wt.

On that note, I have 2 different manuals for the Detroit 2 strokes and the older one says Straight 40 wt. only and the 2 year newer one says 15/40 non synthetic and synthetic oils are acceptable as long as they meet the low soot/ash requirements. I personally will only run 40 wt in my motors but I am hoping that the fact that despite the fact that yet another business ran multi weight oil that it didn't do any long term damage to the motor.

We hope to start the beast early next week. I'll keep everyone up to date with our progress.

Thanks,

Rick

[luvrbus]

Rick, don't lose any sleep over the 15/40 in the engine to much is made of the Tejas 100 hr test with 15/40 your engine has more than 100 hrs and look how good the cylinders look.
Post us a video with sound when you fire the old girl lol 



good luck

[RickB]

Clifford, I have a confession to make. I didn't post yesterday after visiting my mechanic's shop to view my aftercooler because I didn't want to hear responses like my first reponse after seeing it. The thing was completely clogged. I said to my mechanic well that's it this thing is junk. He said Rick we don't know that yet and if anything I am quite hopeful about this engine. He said it all comes down to the liners and pistons. The funny thing is he could've went the other way agreed with me and made more money off of me in the end.

He said I am going to earn your trust today. He grabbed an impact and pulled the bolts and with a couple of prybars we wedged the aftercooler out and the airbox was clean. I mean really clean. He was concerned about the effect of overheating the rings and how they tend to lose their tensile strength and he took a little plastic prybar and pushed against the compression ring and it bounced right back. Needless to say he was right I trusted him more and my inexperienced eyes less. That's the 4th time I would have surrendered and called it quits.

Moral of the story. I don't know how this is gonna turn out. Maybe some of you guys out there with alot of experience do.

But after he puts a kit in the blower, come hell or high water we're gonna fire the old beast up with the old turbo and put a mechanical oil presasure gauge on it. Let it run for a while and see what the airbox drain tubes look like and  IR the exhaust. At that point if everything looks and sounds good he'll rebuild the turbo and pull the pan and get a look at the main bearings and we'll proceed from there. If it needs kits, we'll put them in. If it needs the heads rebuilt, We'll rebuild them

My small block chevy experience in my younger years betrays me when it come to these fire breathing monsters. They are not like our grandmothers V8's.

This oil sample was just another good sign in a scenario that could turn out either way in the end. But I'm starting to feel like maybe I just need to be more patient and less reactive to what I don't understand.
Rick