Firstly, I'd like to say hello, I'm new to the forum but not new to Bikes, Kawasakis or the GTR/Concours 1000
As a long time fan of the GTR1000 I've heard a lot of tales about what it takes to make more ooomph with this beastie.
We'll my first one I had back when I lived in the UK and was a Despatch Rider for 20 years, now strangely enough, that GTR (sadly missed) was an ex Kwasaki press bike, so my 'tuning' attempt met with very easy succes, but I cannot say until now that Learned completely the right techniques. You see that beastie was a 1990 A5 and in Blighty that meant only one thing... 100 measely horses, it literally felt strangled above 7000rpm and the sort of riding the GTR encourages was something of a chore. So any ways as is quite normal with Uk riding all year long, the paultry exhausts with an exit hole no bigger than my little finger, rusted through within 6 months of purchasing the beast. As all couriers are cash strapped, one had to think of some alternative and an alternative to endless welding rapidly disappearing steel. it was during one of these moments when I decided to have a look and see if the spare silencers (Motad Neta) I had for my beloved GPZ1000RX (Ninja 1000R) would fit.... Lo and Behold... yup. and with an exit hole I could almost get my hands in, whilst remaining street legal. The result was outstanding, now she'd pull to the redline in every gear but top. I then heard from a friendly Kwaka mechanic that he'd once cocked up the cam timing on a GTR, he'd timed it according to the RX workbook, but that's one tooth earlier on the inlet, he told me that he only found out about it when the customer came back and asked him what he'd done but the bike was so powerful now it scared him.... hmmm... well you can guess what I did... the result was 155mph and first gear wheelies.
I have lived with this memory for many years and finally this summer I received from my lovely wife, a rather sparkling 1986 A1 In wineberry red....
Of course I was one very happy chappy, but this was of course short lived, because this is Austria I now live in and this means that our beloved steed has a whopping 94hp
.... Still armed with my previous knowledge, I put the Pipes on from my RX (this one lives in my Bar) and advanced the inlet one tooth, oooo definately an improvement BUT still no 7000rpm rush
Ok me thinks, GPZ1000RX Carbs, A real pig to fit and make sure your air box rubbers are new and squishy, but they do fit, so we're up from 32 to 36mm and just for good measure I stuck in the RX's Ignition box, Jeeeeeeeezus it now got some serious Mid range grunt, a friend following me just two days ago on his new z1000sx coomented of how quickly it took off, two up and the front wheel skimming the tarmac, oh boy definately on the right track but still no 7+ rush aaaarrrrggghhh... so why did my last GTR prove to be such a rocket.... hmmm quite a bit of head scratching and it comes down to one thing... it must be cams, but when I did this with my old GTR, I checked the cam profiles, lift and duration and they were identical.... so though I'll double check, the Kawasaki manuals show the The GTR and GPZ have a total of 10 degrees difference in duration, how can that be when they're the same??? So in the end I thought I'll have to check this up with my friend over at the gpz900r owners club, as he supplies all parts kawasaki. A quick check on his Microfiche and all became clear in more than one way, firstly RX cams have a different part number, so they are definately different cams and secondly it would seem that Mr K had already fiddled with my last GTR whilst it was still on thier fleet. (hence previously i have always believed that RX's and GTR's had the same cams). So now to the final point, I've just put the GPZ cams in..... and..... It started snowing heavilly !!! but she is smoother, quieter and revs so quick you have to watch how quickly you open the throttle.
Test run coming with the first thawing, hopefully in a couple of days.
But to sum up:
To get 125hp (GPZ1000RX/Ninja 1000R standard output)
You will need
One pair GPZ1000RX Motad Neta Silencers
A set of GPZ1000RX 36mm Carbs
A GPZ1000RX Ignition Module
A pair of GPZ1000RX cams (with sprockets) Part numbers (Inlet 12044-1112) (Exhaust 12044A-1113)
A set of airbox rubbers (unless your are already squishy)
And lastly you could try removing the air restrictor from the airbox (remove the battery tray and it's in the air intake, held in by two screws) this will help provide a better air flow for your new bigger carbs and save the need for rejetting.
Also by the way for anyone that is interested, The Original GPZ900R (Ninja 900R) and the GTR1000/Concours share the same mainframe, so many parts are interchangeable, including front fairing frame and fairing (a slight mod is required because the GTR has a bigger Rad).
Hope you all enjoy this.
Mark