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Kawasaki Z 1100R
Witch Bike review 1984 It's really amazing what a different paint job and relatively few modifications can do to a bike. Take the new Z1100R, when we tested its forerunner, the Z1000R in the October 1983 issue it was our testers opinion, that although basically a well constructed and reliable mount, it was nonetheless a rather staid, somewhat dull one litre Japanese multi like many others already being turned out by the competition. It is evident that Kawasaki felt this too, their 1984
replacement, the Z1100, is neither dull, lacking style, or simply an over-bored
last years bike. In fact it achieves exactly what I'm sure Kawasaki set out to
do in the first place with the R2. This was to satisfy the demand made by riders
impressed by Eddie Lawson's race winning rides in the USA during 1981 and in
1982, on a 1023cc version of kWacker's lime green tarmac racer, before switching
to a works Grand Prix contract with Yamaha as Kenny Roberts number two in 1983.
What makes all the difference then? The answer lies in a list of carefully thought out modifications. First, the engine. This now has a capacity of 1089cc instead of the former 998cc, a gain of 91cc. The stroke remains unchanged, but the measurements are now more oversquare, with an increase in bore size, up from 69.4mm to 72.5mm. Compression ratio has been raised to 9.5 to 1 from its previous 9.2 to 1. Taken together these changes boast power output by lObhp, to 114bhp. Maximum rpm remains unchanged at 8,500. Another important factor is, besides the increase in outright bhp, torque has been improved from 9.1kg — at 7,500rpm to 10.2kg — at the lower revs of 7,000. The final major engine improvement centres around the
transistorised ignition system, which for 1984 has an electronic advance. Although another lObhp is on tap, the weight has only increased by 2kg to 238kg, this represents a significant improvement in power to weight ratio. To cope with the extra performance the drilled brake discs have had their effective diameter increased by 4mm, (front 250mm, rear 240mm). Kayaba rear shock absorbers are still employed, but these are now of a different type with 5 pre-load settings and 4 damping positions. (On the Z1000 R2 the pre-load was stepless via screwed thread adjusters.) The ZllOO's other change is to its colour options, gone is the
Polar White and in its place are offered finishes in either Lime Green or
Stardust Silver. Quite frankly in my opinion there's just no contest, the Lime
Green makes the bike look every inch a sporting Kawasaki in the best tradition,
whereas with the Stardust Silver the machine reverts back into the trap which
the Polar White Z1000 R2 fell into, lack of identity! Where then did it come from? It was in fact one of the first sold in Britain, in early February, by Cambridge Kawasaki dealer Freddie Mayes to one of Enthusiast's readers, Mark Horsman, a 20 year old merchant seaman from Melbourn near Royston. Why did Mark buy the bike? Having owned several kWack-ers, including a Z900 A4 and Z1000 J2 he still wanted another Kawasaki, but said Mark "something different — GPZ's are too commonplace" and although only just out of his teens Mark "did not go much on the outrageous swappy lines, preferring instead something which looks like a proper motorcycle", — his words, not mine. His preconceived ideas about the Z1100 Rl were that it would be
similar to his last bike, the Z1000 J, but with more power, a lower seat and
improved handling with the smaller front wheel. Unless the prop stand is fully retracted, if the clutch lever is
released with the engine in gear it will activate a cut-out switch — a good idea
this, as anyone who has seen a rider with his prop stand down will testify. The riding position is best described as "sit-up-and-beg" and in solo use is extremely good, except at very high speeds, when progressively the rider finds it more difficult to hang on, even though the bikini fairing does stop a certain amount of wind reaching the riders chest. Two up it is almost as good, but to start with it takes some getting used to, as the pillion passenger is mounted considerably higher than oneself. The actual seating position was comfortable both for solo or pillion use, even with a 6'3" rider. The only criticism, besides the handlebars effect at high speeds, concerns journeys of 100 miles or more when a slight neck ache sets in, a change of bars might cure both these problems. A shock for one used to the differences between Japanese and Italian bikes was the rear end, where the new shock absorbers on their harder settings felt more like a set of Marzocchi's than a normal Japanese pair, as they were very stiff. Going round some of Cambridgeshire's back roads (which are very bumpy) saw the bike jumping over the undulations, not moving off line, just jumping. Later, with softer settings they showed their parantage, reverting more to what one would expect from Japanese suspension units, a much softer ride. On motorways, main A roads and other similar surfaces no problem was encountered with the suspension set either hard or soft. In fact I would rate the roadholding and handling above most other Japanese bikes with conventional twin shock suspension. Unfortunately, one thing let the side down — the tyres. Even in dry conditions I found the front susceptible to losing adhesion and breaking away far too early. In the wet both tyres were really bad and I would advise prospective owners to seriously consider changing them for something different before even taking delivery. With wet conditions the tyres reacted adversely to manhole covers, white lines and changes in surface. During the running-in period, it was found that the comfortable cruising speed was 62mph at 4,000rpm. Compared to other similar conventional across the frame fours, the Z1100 did not feel so top heavy and was therefore less of a handful around country lanes and roundabouts, this is possibly the reason for changing from a 19 to an 18 inch front wheel, as the front end tended to "fall into" corners more easily than with theZ1100R2. Braking, this can only be described as excellent, matching the bikes weight and performance perfectly. I just can't fault the bike in this area at all, both front and rear lever actions are progressive and positive — full marks Kawasaki. Even in wet conditions braking is much improved over the disc brake systems of yesteryear and the front forks do not dive down like many others when the front brake is applied, even though they are not fitted with an anti-dive system. Another star point was the engine. Except for a slight tingle around 4,500 to 5,000rpm, which was not painful or annoying, the rest of the time the rubber mounted dohc four shows superior mid-range punch than similar Japanese designs, making the bike far more usuable and therefore enjoyable to ride. Once warm and in the higher ratios the gearbox is far less clunky, allowing the rider to make full use of the power. Besides its torquey top gear performance, the power in 3rd or 4th harnessed on the open road is superb, no ifs and buts, just tremendous power. Overall gearing seems just about perfect, no need for owners to have to purchase alternate sprockets to get it right. The tinted mirrors detract from the smooth running of the engine by being blurred at speeds above 4,000rpm (62mph) and, to add insult to injury, are the type where one sees more of the rider's shoulders than what is behind. Protection offered by the bikes mudguards is spoilt by the amount of spray that is allowed past the (large) plastic rear two piece unit, this reaches the pillion passenger and is also thrown 10/15 feet to the rear into the path of following traffic, the steel front, in contrast, although a sporty looking item protects the rider and engine quite well, much better than a lot of machines. The electrics were reliable throughout the test period, this
traditionally is a strong point on most Japanese bikes. Lights were powerful,
with the front allowing the rider to travel at almost any speed. The twin horns
did their job, warning other road users with a suitably loud blast. The switch
gear was big, bold and clear, it could even be used with 3 pairs of gloves — I
know because I tried! The only thing amongst the whole electrical installation
which could be faulted was the solidly mounted flashing indicators, one knock
and they would need replacing. The black chrome 4 into 2 exhaust system appears to have a
similar durable finish to that of the Suzuki XN 84, tested recently, this it may
be recalled was pristine, even with over 8,000 miles on the clock. The petrol tank paint finish and that of the black coated engine in particular are both of an excellent standard. Cleaning was easy in some areas, difficult in others. The wheels, for example, including the discs (which are retained by large allan screws) are simple, the most awkWard place was the swinging arm loop and rear of the engine, both almost inaccessible. With a potential maximum speed of around 140mph and fuel
consumption which averaged throughout the test 42/45mpg, albeit including
running in, the Z1100 Rl compared favourably with any other big bore Japanese
multi, whilst the price of £2,749 including taxes, represents excellent value
for money. At this price it is in direct competition with the latest hi-tech
750s and only £100 more expensive than the Z1000 R2, which at present is still
currently listed by Kawasaki UK. For my money the extra is well worth it,
because with the 1100, Kawasaki have made a genuine attempt to improve several
major items, in the process making the whole bike considerably more attractive
to potential customers. Another point in its favour was the acceptance by owners of
other large Japanese hardware, not just Kawasaki owners, as several of its
admirers included Honda, Suzuki and Yamaha owners. It should be remembered that
in the Z1100, Kawasaki have only its appearance and honest rideability to rely
on, it hasn't any technical inovations such as rising rate suspension, a turbo
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Any corrections or more information on these motorcycles will be kindly appreciated. |