Testarossa's 1980 GS750L Project

[Motocrossx23]

Awesome! I like the pilot powers you have on there, my favorite tires lol.

 

[Testarossa]

I finally have some progress to report. Today, I made time to work on this bike, so I got the carbs re-installed with the correct jets, and all the cables re-routed. So now the only thing that I need to do for the lower bars is to source a shorter upper brake line. I'm really happy with the riding position that the superbike bars provide. Carbs are synced, and the bike starts and idles really well now. I also got the tank color sanded and buffed out to remove the handful of dust nibs that I got when painting. The tank was re-assembled with the petcock rebuilt, and the defective sending unit re-installed. I need to get a new sender. Oil is changed, valves adjusted, chain cleaned, lubed, and adjusted.

Everybody got to ride around the subdivision this afternoon. The bike runs very well. My son was laughing his head off when I took him for his lap. That's worth all the money in the world to me. Brandy (my wife) says she likes it. That's what I was hoping for. I really want her to take an interest in riding again. I even went down and showed it to my neighbor who sold the bike to me. He was suitably impressed, and wants to have one last ride. He offered to let me take his Vulcan 2000 out for a spin in return.

I still need to replace the fork oil. It's rather bouncy at the moment. Also, I'm hoping that a new set of pads, and new brake lines in the front will improve the front braking. I'm probably just spoiled by my sport bike brakes, but the fronts seem weak to me.

If the sun comes out tomorrow, I'll try and get a new video of the bike running. Not too bad for less than $500 investment.

 

[Guest]

Thanks boss. I just need to find the right length clutch cable and brake line. Also need some warm weather so I can shoot some paint.

A clutch cable from a 83 750Ed/esd works well it has a 90 degree bend at the lever, you will have to cut a slot in the little bracket that attaches to your clutch arm for the cable to attach to. I have a buddy that has done this on his 750L , he is also running superbike bars

 

[makenzie71]

Why didn't you match the wheels?

 

[Testarossa]

A clutch cable from a 83 750Ed/esd works well it has a 90 degree bend at the lever, you will have to cut a slot in the little bracket that attaches to your clutch arm for the cable to attach to. I have a buddy that has done this on his 750L , he is also running superbike bars

It turns out that the L cable can be made to work. I re-routed it to take up the slack. The only thing that I needed to do was to place it outside of the number one carburetor and between the left and center backbone tubes so the adjuster doesn't hit the fuel tank sender. Just moving it from between the #2 and #3 carbs took out the slack. Also, I forgot to mention that I had a throttle cable from a 1995 GSXR 750 and that works on the GS for a shorter option.

 

[Testarossa]

Why didn't you match the wheels?

Sorry, I'm confused. What should I match the wheels to? On which bike?

 

[makenzie71]

Well your GS has matched wheels and the KZ has mismatched wheels...

 

[Testarossa]

The wheels on the KZ came off the donor GSXR 750. I realize now that they are from two different years of GSXR but they are close enough for me right now. Maybe some day I will come across a match to one or the other, or possibly a custom set in the future. Who knows? That bike will be an ongoing transformation. Next step is a more powerful engine.

 

[makenzie71]

Been in similar situations...had to use what I had. I just hate mismatched wheels but the bike still looks pretty mean.

The straight spoke wheels are easier to find wider that the swoopy ones. Swept spokes are pretty limited, really, in Suzukis to 4.5"...I think B6's had some 5" swept spoke wheels but can't remember. Interestingly, there are LOTS of Yamaha wheels that match and are wider. Just something to keep in mind.