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Jim's 1980 SG Miss September
- Thread starter Jim
- Start date
Might be 75 here Sunday so I just might go for a spin but I'll have to dress up a bit
Enjoy the weather in KS
Enjoy the weather in KS
On the ‘79 was the head pipe and muffler one piece or did it have a joint with a clamp?
I think all Special exhausts were one piece .....
https://www.partzilla.com/catalog/yamaha/motorcycle/1979/xs650sf/exhaust
https://www.partzilla.com/catalog/yamaha/motorcycle/1979/xs650sf/exhaust
Far as I know all Specials had the one piece... Standards had the joint.
Anyone else know?
That went down hill fast.
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Wasn’t aware the the cross over pipe too. Thx
Yeah... my threads often go up in smoke.Thst went down hill fast.
Yes, the Special exhausts are all two pieces. That being the left side and the right side. The mufflers are welded on. The crossover is welded to the left side IIRC.
To fit the small case protector (crash bar), Special headpipes are required.
To fit the small case protector (crash bar), Special headpipes are required.
There's two styles of special mufflers one type has a center exit, the other has it offset a bit. not sure when it changed but tween 79 n 80 would be my guess.
there's a gasket used in the joint. ;^) Weather's great, let's roll!
there's a gasket used in the joint. ;^) Weather's great, let's roll!
Mirror extensions showed up. Installed 'em. The extensions themselves are machined alloy and pretty good quality. The bolts are Chinese crap. The flats inside the allens started rounding out as soon as I started crankin' on 'em.
So anyway... they do the job. At idle the view in mirrors is about what it was and at highway speeds they're actually a bit better. The blur was noticeably less. I suppose that's all gonna depend on the bars, the rubber isolators and other stuff to do with vibrations... so that might just apply to my bike.
Used the GPS on my phone for a speedo. Even at 85mph the view is pretty good (for a 40+ yr old twin). Before the extensions the mirrors were about worthless at that speed.
Funny... pulled out on the interstate into a pretty strong headwind and all I could accelerate to was about 60. That was in 3rd... and when I gave it full throttle it actually bogged down even more. Finally looked down and realized I still had about half choke cranked in.... dipshit.
Just to park this somewheres..... 65mph GPS is exactly 4000rpm (indicated) in hi gear.
And the reason I got 'em... fixed. No more shoulders blocking half the view in the mirrors. The view of cars pulling up behind me is as good as any mirror I've had.
So anyway... they do the job. At idle the view in mirrors is about what it was and at highway speeds they're actually a bit better. The blur was noticeably less. I suppose that's all gonna depend on the bars, the rubber isolators and other stuff to do with vibrations... so that might just apply to my bike.
Used the GPS on my phone for a speedo. Even at 85mph the view is pretty good (for a 40+ yr old twin). Before the extensions the mirrors were about worthless at that speed.
Funny... pulled out on the interstate into a pretty strong headwind and all I could accelerate to was about 60. That was in 3rd... and when I gave it full throttle it actually bogged down even more. Finally looked down and realized I still had about half choke cranked in.... dipshit.
Just to park this somewheres..... 65mph GPS is exactly 4000rpm (indicated) in hi gear.
And the reason I got 'em... fixed. No more shoulders blocking half the view in the mirrors. The view of cars pulling up behind me is as good as any mirror I've had.
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We stand on the shoulders of giants...................
Is the rear sprocket a 33?
I run a 32T on my 16" Special rear wheel and think it is ideal. I had the same on an 18" wheel and it wasn't as good. The "umph" through the lower gears really took a hit. For the 18" rear wheels, I like a 33T. One tooth difference doesn't seem like much but it really makes a difference.
I only weigh about 160... and that's if I go back for seconds.
The 31T suits me just fine.
Oldnwiser
XS650 Enthusiast
Just don’t do like I did the first time facing some IH valves , I forgot to engage the chuck with the valve in it. It made a nice groove in the valve face lol
Oldnwiser
XS650 Enthusiast
Oh that’s cruel, they had to milk every female cat in Stuttghart for that one glass? lol
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