Posts by tag: Hitachi

Kawasaki May 1, 2019 posted by

Beast of Boost: 1985 Kawasaki GPz750 Turbo

During the wild years of the decade known as the 1980s, there was a lot going on. Legwarmers were hot. The brat pack were hot. And most importantly, Turbos were hot. Every major Japanese manufacturer played with the puffer configuration at least once (Honda tried it twice) before giving up on induction-enhanced motorcycles. Honda built a pair of large, heavy sport touring bikes. Yamaha built a lazy Seca with futuristic fairing in a “me too” effort. Suzuki took the bonkers approach and built a no-apologies sport bike like a Katana on turbo steroids. And Kawasaki watched, learned, and eventually dipped their toes into the water with an updated GPz.

1985 Kawasaki GPz750 Turbo for sale on eBay

The largest of the turbo bikes by displacement, the Kawasaki GPz was also the fastest. The only factory turbo bike to break into the 10s in the quarter mile, the GPz 750 Turbo was not only faster than all its forced-induction peers, it was the fastest street bike tested in 1984. With an estimated 112 HP on tap thanks to the Hitachi turbo unit sitting low down and in front of the inline four. With ideal turbo placement for short exhaust primaries, Kawasaki’s approach minimized lag and maximized horsepower. Even then, power windup changes suddenly as the engine builds boost – making for a fun ride, but a less than predictable mount for tight canyons. Like all but the Yamaha, the Kawasaki Turbo introduced fuel injection in an effort to better control engine operations and promote rideability and longevity.

From the seller:
1985 KAWASAKI GPZ750 TURBO

Here’s a real nice Kawasaki 750 Turbo for sale. Bike is in near perfect original condition except for 1 flaw/crack on right lower side of faring. Always stored inside and covered. Runs and rides excellent with fresh oil and filter change. It is all original with factory owners manual and tool kit and has 530 chain conversion to get rid of the factory heavy 630 chain, see last 2 pics. Newer tires and battery.

While the Kawasaki Turbo takes after the GPz models, it differs in many ways. Engine internals, chassis geometry and suspension, and custom factory lowers were all bespoke to the Turbo, although Kawasaki did raid the GPz750 and GPz1100 parts bins to keep costs down. The resultant looks made it familiar to the GPz, yet officially it was known as the ZX750E and referred to simply as the Kawasaki 750 Turbo. Lasting only a couple of years with no significant changes, the Kawasaki GPz750 Turbo shared a similar life cycle with the rest of the Turbo packing offerings. Expensive, complicated and generally unloved, they all failed to sell well in the showrooms – despite the flash and the speed.

Today’s Turbo example is a 1985 model, and it looks like a true survivor. It does not appear to be scuffed, dropped, hot rodded or significantly modified. The seller states that the chain was downsized; the 530 chain is pretty stout, and the factory 630 size was incorporated no doubt due to concerns over longevity. Other than that, this appears to be an honest machine presented to us by a turbo collector (notice the XN85 in the background). The opening ask is a fair $6,999 – but there do not appear to be many bidders as of yet. Not terrifically valuable when compared to more elite machinery (RC30s, OW01, MHe, etc), Turbo bikes are slowly gaining ground as well as the respect of riders and buyers. If you are in the market for one of these unique time pieces, this 10,000 mile machine might be your opportunity. Check it out here, and then jump to the Comments to share your Turbo thoughts. Good Luck!!

MI

Beast of Boost: 1985 Kawasaki GPz750 Turbo
Yamaha December 27, 2009 posted by

1978 Yamaha TZ250E

Located in Menlo Park, California is a completely original 1978 Yamaha TZ250 with less than five miles.  To quote the seller:

1978 Yamaha TZ 250, less than 5 break in miles if that .
This example has never even broken in. Garaged since new, will need new rubber & seals. Campagnolo 5-spoke alloys, fairing & duck-tail seat. Minor dings & scratches from sitting for so long, you will not find another one in nicer or newer condition.

Some information about 1978 TZ250s from Motor Bike Search Engine:

Introduced in 1978, the ‘E’ version of Yamaha’s all-conquering TZ250 production racer featured a new chassis frame. Retaining the same ‘monoshock’ rear suspension layout (complete with adjustable pre-load and compression damping) as its forebears, it relocated the famous twin-cylinder, two-stroke water-cooled engine some 20mm further forward. Mounted on special alloy plates, this remarkable unit boasted Hitachi’s automatically advancing / retarding CDI ignition system and Mikuni VM34SC carburetors. Reputed to develop 53bhp @ 10,500rpm, it was mated to a six-speed gearbox and reined in by front / rear disc brakes. A stepping stone in the careers of such riding greats as Kenny Roberts and Tom Herron etc, the TZ250’s influence reverberates to this day.

The asking price is firmly set at $7,500.  It would be nice to see this time machine cleaned up and on display–it would take some serious work to get it back to racing condition.  See this fantastic barn-find on Craigslist here.

AG