CM871 kickin my Butt

[RustyWood]

Hey Guys, I'm back working on it, I'm tellin ya if I didn't have bad luck, I'd have no luck at all. I ripped my palm open on a nail slipping on a boat dock, and they Lost my Order for the Cam Wedges/Crank Pin/ & Cam Gear Removal Tools, which finally got here Friday, then my Shop Air Compressor crapped out and I had to order parts to rebuild it, all the while when I have to run out for each thing I run across I don't have as I've only had 1/2" drive tools (car workin level) and never needed 3/4" drive until working on this beast and snapping enough 3/4 to 1/2" adapters, so there's lots of running out and time burnt trying to find tools.

Anyhoo, here are some interesting things I've found and I'll need Rawze's feedback here.
Have you guys ever seen the Seal Plate to the ECM Mount Cooling Plate have an internal Burst like this ? It's all in a sealed contained area, but what the hell could have caused this a backfire at some point ?



Then, as suspected, #3 cylinder did loose the valve face, looks like 3 sides let go, I'm glad I didn't trust driving this thing across country to Rawze's place, I think that last lip edge would have let go and taken out another $4k Turbo.

#3 Cylinder does have a bit of scarring, no clear cracking, but I can feel a slight edge running my finger down through so yeah, I'm still not too crazy about throwing the new head on and would rather put a new sleeve in, but I don't have those tools or know how to do the machine work and shimming Rawze has told me about and will teach me.

Another Question, on 1 more thing I have seen. It looks like this engine has had a valve smack on the piston on #1 you can see, there are a few others but not this bad, so this was my thought. The 6 degree wedge fit nice and flat on the Injector Cam Flat with Crank Pinned, but it wouldn't seat on the valve Cam, but the 7 degree goes all the way down seated, BUT as it touches the lower part, there was about a 1mm to 1-1/2 mm gap to be flush with the 7 degree wedge at the top of the flat surface? Should the 6 degree's fit on both sides? and is this slight turn of the valve cam what caused valve contact do you think ??


I'm making my order list to run to Kenworth, there are many things I think I'm going to replace besides all the needed stuff, the balancer, gaskets, the cam position sensor and since the mesh on the wire loom of my Jake Harness has been disintegrating I may replace that.

I can't get a photo of the slight edge I feel it doesn't really show up.