This is down the rd from me for sale, not froze up but not running, what's it worth?
Hmmm, pretty impressive line-up on the design team! From Wikipedia: "Several high profile external design houses contributed to the design of the XZ550 including GK Design Associates for design, and reputedly Cosworth for the engine and Porsche for the final drive"
I recall them new. They got a bad rap for a hesitation/flat spot on the throttle, midrange I believe. It turned out to be something minor, but it caused a lot of bad press. More of an annoyance, apparently. I think by the last year they 'fixed' it. If I recall, it may have been a different tune on the CV carbs, maybe a different needle. I don't recall exactly.
It's generally the same thing as a Suzuki TL1000 for the engine layout, one-quarter of a Cosworth V-8! A cool smaller-displacement bike that you won't see very often. The KZ550 probably outsold it 10:1. I'd say, get it for a plaything, try to get it running, but don't sink much into it. You will probably never get your $$$ back.
Unfortunately, producing an entirely new product from scratch is never without initial problems, and the Vision suffered from a few. An off-idle carburetion quirk, known as the "Vision stumble", meant the first year machines were prone to initial stuttering on part and full-throttle takeoff. The "Vision stumble" problem, after months of research, was finally solved by racer Marc Salvisberg, who later started Factory Pro Tuning. The problem, it seemed, wasn't a Yamaha development problem at all, but was actually a lean spot, just off idle, caused by what appeared to be residual casting sand that filled the "off-idle" bleed holes at the throttle butterfly plate in the "Weber style" Mikuni carb. That information was immediately relayed to Yamaha U.S., where it was relayed to Japan and verified. The 1983 models carbureted essentially flawlessly.
Todd
This is an 82, will the carbs from an 83 "fix" the problem?
Enter your email address to join: