My Winter Project GR650

I recently picked up am 83 Suzuki GR650, also known as the "Tempter". No title and didn't run. I always wanted a parallel twin 650 and the price was right for this one. The parts are kind of rare as the bike was only sold in 83 and 84 in the states. Our neighbors to the north or across the pond may be a bit more familiar with this particular modle.
The wiring harness is a mess and there are a few other parts missing but I did pick up a parts bike to go with this one so it should be running soon.
The modifications have already started. I'm using this as my first attempt to build what I want. Let me know what you think.



There is a forum for this bike but it lacks the volume of traffic and amount of info I have found here.

 

very interesting project, what is that swing arm off, or did you fab it, how is it sprung?

 

Its stock, Suzuki called it the "Full Floater suspension" Its an adjustable monoshock. You can see the adjustment knob under the carb body behind the starter. You can also see the lower shockmount jutting down in front of the rear wheel. The only problem I see will be having to repack about 20 bearings this winter.

 

Motor looks to be DOHC, like the XJs. What is there looks to be in reasonable condition.

 

I'd just make sure I can get a clear title to it before I do much to it. Otherwise it looks like a neat starting point to a project.

 

Yeah, its DOHC and uses the same carb block as the XS650. Everything I've done to the bike so far has been free, I was laid off the day after I posted the thread. Plus I don't want to spend money until I have the title in hand.
I cleaned the carbs and bench synced them. Although they are far from balanced. I also found that the balancing screw is nearly impossible to get to. The manual says to take the carbs off, adjust, put back on, test and repeat until happy. I think there is a better way to do it, I just need the right tool for the job.
I swaped out the clutch from the parts bike, the old one was shot. And did some harness work.
Question: What gauge wire should I use when customizing the wiring harness? (I know you'll ask about amps, draw, etc)
I need to reroute one leg of the stator to the R/R (3 legs, one of which passes through the head light, usually ends up with a ground issue over time and fries the stator)
I'm also told to ground the R/R directly to the neg terminal. As it is, it runs to a common frame ground that is in a bad place and tends to short and fry the R/R.

I'm also going to swap out the flasher relay to run combo turn/brake lights, more on that when the time comes.

I swaped out bars for a pair of GP tours I had laying around, it raises them up just high enough to avoid hitting the tank. The old bars were just a steel pipe and the diameter was a hair to small to secure the controls to.

working on making a braket for my tach and researching an after market matching speedo. Not going to buy it until I have the title and the money.

I also need fork seals, a new battery, and some more insperation. The rear fender has to be sorted. It has to extend just past the axle to pass inspection. I could mount the stock fender on the swing arm giving it a low profile bobbed look, or maybe a flat track looking fender off the frame rails. I think I'll mock something up and take some photos.

 

"standard" wiring was usually #12 stranded copper, you can get it at "old school" auto parts stores like NAPA (in different colors) by the foot.

 

from what I here, international title might be the way to go on the title.