Skunks in the woodpile 🦨

[olironrider]

I got to thinking about a few of the recent posts turning into “Chain Reaction Projects” !

I’ve “been there, done that” with the many stray air-cooled Motorrads I’ve brought home to restore/refurbish; seems the further you dig, the more you find. This thread is dedicated to those Skunks you’ve found !

1972 R 60/5 SWB: disassembled “barn find” that had a litter of them, here’s one…



“Remove Cap Before Adding Gear Oil” ! Heard something rattling in Rear Drive while cleaning it before opening to re-seal

 

[pomurchu1]

I found a washer floating around in the rear wheel of my /5. It came free with the bike. No idea how it didn’t cause any trouble.

I’m beginning to believe that these bikes are indeed bulletproof. They have so many issues induced over the years but they keep running leaving you none the wiser about what is going on on the inside.

 

[olironrider]

Here’s another from that 1972 R 60/5 SWB…



Core of the bike sat on the oil pan in the barn; mice took advantage of open headers to stock the cupboard !

 

[stevenrankin]

For much of the stuff I see at my friend's shop or I have found, I use the words, "Previous Owner's Disease". St.

 

[drost]

Bought a R60/5 to restore. During tear down found a lot of brass particles when removing right valve cover and rockers were worn out. With out knowing history of the bike I chalked it up to who knows what happened. First start up after restoration I removed valve covers to check for oil flow. Left side had good oil flow, right side had a drip of oil once in a while. Removed cylinder and did not see anything obvious. Removed top cylinder stud and put a blow gun at oil feed hole and heard/felt air rushing out of block between top cylinder studs. That spot is machined for connecting rod clearance and was machined through the oil gallery that feeds the rockers. Red arrow shows hole in oil gallery, yellow arrow shows oil passage feeding cylinder. Found a BMW service bulletin from that era stating to check for bad machining when having low oil pressure problems. Ran that way from 9-71 to 2016.

 

[olironrider]

A’yup… gotta love these Airheads ! Good work Doug, really good
How was that repaired; not an easy one I suspect ?

 

[drost]

To repair I removed the front cover stud that is inline with the oil gallery. Bought metric and standard roll pins to test fit. Scribed the center and ground open at scribe. Oil gallery is cross drilled to feed cylinder. By modifying the roll pin I knew when the center of it would align with cylinder feed. Once driven in there is no way to remove roll pin, alignment was done by eyeball and all worked out. With engine on bench and upside down, loctite was applied to wick in where roll pin was visible. This was done to seal up that area. Oil flow to both valve train is now equal.

 

[olironrider]

FANTASTIC !!!

What a truly great “Field Expedient Repair” for an OEM machining error, Doug !
In essence, the roll-pin became an internal t-fitting; being hollow to flow oil, it diverted oil too !
I’ll be putting that in my “Book of Wisdom”, labeled as the: “Drost Oil Gallery Salvage”

Don