Before I pose the question, I know the simple answer is to go and check my header pipes, BUT I don't actually get my grubby paws on the bike until spring. And I want to know the answer now!
So, does the UK version of the ZRX1200 have a cat or not?
I ask because of the following, seemingly contradictory, information: - The on-line version of the workshop manual states that the power outut of the catalysed engines in 78.2kW (106.2PS) while the non-catalysed engines put out 90kW (122PS) - The 2003 Kawasaki range brochure states that the UK models have a power output of 122PS. (i.e. non-catalysed) . BUT - all the threads I have read on the subject, state that the 01- to 04 ZRX's (with the black headers) have a catalytic converter in the collector box.
The power difference, due to increased restriction in the exhaust, I can understand. And all will become clear(er), I hope, once I can actually eyeball the headers, but until then, can anyone state which headers were standard UK fitment? KHI-M078 (non-cat) or KHI-M077 (with cat)?
The best thing to do with either type of header is to put them in the bin if it's optimum power you want. Being double skinned they have a very narrow internal Bore and this is the main 'restriction' on the bike. A decent system suitably set up will release around 20 bhp or so.
Asking for forgiveness is easier than begging for permission
A full after-market exhaust with a jet kit will certainly add a noticeable amount of power, and lower the weight of the bike by about 20 lbs as well. Stockers weigh about 30 lbs and most after-market SS pipes weigh in the order of 11 to 12 lbs.
Silver REXes are so subtle - they just slide under the target's radar, then WHAM! they're toast!
03 ZRX 1200R, Akra SS/Ti, Ivan's jets, K&N pods, Ted's advancer, chainguard and storage box, Chrispy's bar end mirrors, rearset plates, fork brace, 'n some other stuff. . . , 84 KZ1100R, 82 GPz550
Hi, have junked matt black oe headers for stainless, combined with Ivans jet/needle kit promises wheelie in 2nd gear ,yeh right. Going to Valencia for GP accelerated slightly more than normal,wheel 2" off bloddy hell, does what it said on tin!
T140 bit tuned, Z1000st where I learnt to ride rex's!
Kwikasfooki: Hi everyone, I'm Alan a roofer from Stourbridge.
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zrxpilot: Aye up anyone on, just joined,
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floydzrx: Hi Floyd from Manchester just joined. I have a 98 C2 1100
Jun 27, 2017 11:53:33 GMT