Reason #(insert here) you're glad that you...

[bobbyb13]

...tore down that unknown engine that someone at some point had started rebuilding?

I pulled a valve cover on this particular engine (one of three in this mystery pile of Guzzi joy that I bought) that were mostly together and discovered that:

1. Someone had gone through these heads, so I can hope someone who knew what was up worked the valves and guides.
2. The right side cylinder had started spalling/flaking in situ. Well, at least I can buy replacements.
3. The left side had this spooky washer (shown in attached pic) on a main stud.

Granted that a piece of that washer probably (maybe?!) would not have slipped out, but it did conjur horrible mental images of even part of it bouncing around those valve springs, rockers, push rods, etc... at 5k rpm

Eeek

 

[V700Steve]

Looks like spring shims.

 

[bobbyb13]

Wave washers under the case stud nuts.
I would've assumed those were good forever.

I really not sure what types of washers go where in some places since I know all of this stuff has been apart before and sometimes the descriptions in parts diagrams aren't detailed enough.

I've also read in a few places that instead of original foldover locking tabs that people use wave washers in spots in rebuilds.

If the torque spec is the same for either I would rather use washers but I have no interest in second guessing an engineer or reinventing the wheel.

I'm really just looking forward to seeing someone polished the crank and camshaft but haven't gotten that far yet.

 

[V700Steve]

Don't know what motor but I looked at a V700 68 and they are flat, .080", and will fit down casting holes for short studs. Looked in a top end box I put those in around 96, that motor is on the bench.

 

[bobbyb13]

Thank you for the direction.
I have no idea what this engine came out of but I can tell you the oil sump arrangement is completely different from the other one I took apart.
Man, this is going to take a while to sort through.
And sadly the cam journals feel a little rough at the peak of the lobes and the crank never got touched either.
Hopefully the machine shop that has done some work for me in the past will work on these pieces.
At this point I'm wondering how many different crank and cam shafts were made for old 850 engines.
It is impossible for me to tell what parts I have came out of even what year machine never mind what model.
Oh, research.

 

[Amboman]

It's fairly easy to identify what an engine came out of by the prefix of the engine number, i.e. VC = 850-T, VD = T3.

I use Delta Camshaft in Tacoma, WA for all of my camshaft work and lifter refacing.

 

[bobbyb13]

I have two VG, two VC, and one VR here.
Working on the VR (a T5 ?) now instead of the Convert at the moment.

The part that makes me nuts is that I cant find casting numbers on all these parts and after digging through parts manuals for 5 models I see that there were more changes to engine cases, cranks, and rods than I thought.

I'm really surprised to see how different the oiling systems were across models too.
Still wondering why they thought inside the sump/ anywhere inaccessible without dropping the pan was a good place for filters.

 

[V700Steve]

I was looking in a parts manual for 1000SP today and those washers under stud nuts are spring washers(wavy) what it says.
10pcs- Part # GU14018400 and 2 pcs- Part # GU95129180
The 2 pcs are same id but od is smaller to fit down casting holes on top short stud. The answer you wanted

 

[bobbyb13]

Outstanding- thank you.
I've looked through 6 other parts manuals for other stuff and I'm getting dizzy.
Got those and some new schnorr washers coming and then I'll be ready for reassembling this monster.