I swung up to Kris' and took out some tools on loan. (cam gear removal tools and much more) Was able to continue with the teardown this week.
Started with the cyl 1-2-3 bank. pulled the rockers, cam, cam housing, heads, and cylinders.
cam is 901.105.133.0R which is the stock cam for this engine (1971 911T). I'll be measuring them up to see if they've been ground at all.
cam - #3 cyl end
cam - middle
cam - #1 cyl end
The heads are 911.104.306.0R which are also the stock heads for this engine
#1 head
#2 head
#3 head
all of the cylinders looked like this
everything is generally caked in either carbon deposits or oil/grime.
that said, everything looks pretty good. And by pretty good I mean nothing terribly terribly borked. i.e. no valve/piston contact or broken rings. The whole thing came apart pretty easily, no complaints.
Of course I've been bagging and tagging all the hardware, bigger items go into my build cabinet
#4/5/6 pistons, cylinders, and heads all in equal shape to 1/2/3 that I pictured above, no terminal damage so far. To be honest, to me it looks like a pretty good rebuild by whomever did it.
Went to inspect the head studs and found something...
Looks like someone installed case savers or time-serts already. Judging by the fact that all of the cylinders and heads came up with no issues, I'd say they're straight. The one on the left is slightly proud of the surface, where the right one is flush.
All of the studs on this case half have them, didn't even think to flip it over and check the other side, I got called away right after I took this pic.
Again, no history on this motor. Complete unknown. So it's nice to see this when I very well could have been looking at toasted valves, heads, chains, and much more. Also to reiterate, despite this good news I will still be doing a full rebuild on this, now I just may not have to install new case savers.