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This is a bad news/good news update...
DGXSER posted an inexpensive fix for this here: http://www.xs11.com/forum/showthread...thermostat+gas The OEM seal is NLA, and the Mikes gasket which was the alternative choice was being reported as not lasting too long.
So this looked like a decent alternative, easily found/installed. I used one of these on my SG built to replace the hardened/cracked original and it seemed to work.
Well, it didn't work very long. I got a phone call from the new owner of the SG (unrelated to the problem) and he mentioned in passing that the T-stat/gas cap gasket started leaking. But the good news is he found that the '80 XS650 gasket will fit and it's still available new from Yamaha for under $10. He had to order it, and it's not an exact fit (he said it needed to be stretched a bit to get it on), but once on it cured the leaking. Just a heads-up...
I'll note that I've found that you can still get some small parts new from Yamaha (shifter rubber, some seals, among other stuff) and most prices have been reasonable, so rather than take a chance on uneven-quality aftermarket parts I've been trying the dealer first.
DGXSER posted an inexpensive fix for this here: http://www.xs11.com/forum/showthread...thermostat+gas The OEM seal is NLA, and the Mikes gasket which was the alternative choice was being reported as not lasting too long.
So this looked like a decent alternative, easily found/installed. I used one of these on my SG built to replace the hardened/cracked original and it seemed to work.
Well, it didn't work very long. I got a phone call from the new owner of the SG (unrelated to the problem) and he mentioned in passing that the T-stat/gas cap gasket started leaking. But the good news is he found that the '80 XS650 gasket will fit and it's still available new from Yamaha for under $10. He had to order it, and it's not an exact fit (he said it needed to be stretched a bit to get it on), but once on it cured the leaking. Just a heads-up...
I'll note that I've found that you can still get some small parts new from Yamaha (shifter rubber, some seals, among other stuff) and most prices have been reasonable, so rather than take a chance on uneven-quality aftermarket parts I've been trying the dealer first.
I am hoping it is the right one
that was fun
After looking at your bike pic's, well I got to R&I the tank for the P-cock seals, so why not sand and polish
The Camaro pick was a work in progress just to show the paint, I did replace the exaust with OEM style and other stuff before it was shown. Here is a under hood pic, gold frame, red controll arms ect:
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