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I'll be there with my newly refurbed 77 GS6 175.

Ugh, alas the original tires were just too petrified to deal with. As much as I hated to pitch them, I decided to go with some new Pirelli MT16s.

I could use one for a '77 GS6 if anybody runs across one.

Thanks for the pic of the airbox. I was getting ready to ask for one. So, the strap holding the lid on just wraps all the way around the airbox? I was looking for attaching points and couldn't find any.

Thanks for the replies.
The rubber mounts are in place front and rear, just not apparent from the picture.
Good to know it's the original pipe. I just assumed it was not since a lot of the pics I found had really long silencers. Maybe they were the big motor bikes.
Still makes me wonder what I'm doing wrong.

Thanks. Perhaps they were the originals, then. The Metzeler Unicross looks like the modern equivalent but are only available in 120/90-18 and 90/90-21. I suspect these would be too big for this 175. I suppose I'll just run a set of Maxxis Maxxcross 80/100-21 and 100/100-18 since I already have those on the shelf and I know they wear like iron.

I need fork seals for my 77 GS6 175. The originals are still mostly functional but are so hard that they seem to be causing a lot of stiction. I got some from Mr. Buehner (2 per side) but for some reason they stack too high so I am unable to use them. Original seals were 47mm OD x 35mm ID x 10mm high.
Any thoughts or recommendations?

UPDATE: After digging down a few pages I found mentions of "Leak Proof Fork Seals". Am I better off with the "Classic" 7201 or the "Pro-Moly" 5201?

Sorry for the barrage of questions but I'm itching to finish this bike so I can ride it... '77 GS6 with what I believe to be an MC5 pipe. The pipe bolts right in but apparently has some clearance issues. After installing the pipe I notice that it is pressing against my new (and expensive) airbox to carb boot and also the throttle cable for the Lectron carb is laying against it even though I already clocked the carb a little.
Was the MC5 pipe that much fatter than the stock GS6 pipe?
If so, what was different about the MC5 that it didn't have these clearance issues?
I'm not sure how to address this. For now, I slid a piece of fire hose in there, but that is temporary at best. Anybody ever run in to this issue and come up with a good solution?
Also, a somewhat unrelated question, what is supposed to hold the plastic cover on the magnesium airbox?

Does anybody know what tires would have come on a 1977 GS6? The one I'm working on appears to have low hours on it. The ancient tires on it are Metzeler Moto Cross Enduros. Just curious if these might be the original tires? I do not plan to run them, but it would be interesting to know if they were.

Greetings. I'm working on reviving a '77 GS6 175 and can't figure out how to stop an exhaust leak where the pipe meets the manifold. I think it is an MC5 pipe since it has a short silencer.

Couple observations:
- The spigot coming out of the exhaust manifold is not tight. It will spin and wiggle a little.
- The pipe is a little loose (maybe .5mm) on the spigot.
- There is a sleeve that slides over the end of the pipe before it slides onto the spigot.

Is there some trick to this? I'm thinking maybe some high temp fiberglass rope seal between that sleeve and the spigot? I've considered using some high temp RTV sealant (in moderation) but that's gonna make a mess and I doubt it would last very long.
Also, is it normal for the spigot to be a little loose in the manifold?