MikeM
Novice Class
Posts: 49
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posted August 19, 2002 08:22 AM
AMAZING NEWS.... 202bhp from standard engine!
Kit car magazine in the UK prints an article about the latest Z-car twin bike engined Lotus 7 style machine. 0-60 2.8 seconds, any guesses on the powerplants? Yep, two ZX12R lumps. All they've done is turned 'em sideways on, junked the ram air so that the velocity stacks stick up through the bonnet perpendicular to the air flow, junked the complete Kawasaki Efi/ECU and fitted two Motec systems, fitted a road legal can and some very suspect looking headers and link pipes.
THEY ARE CLAIMING 404BHP!!!!!!!!!!!!!!!!!
UNLESS I'VE CRASHED ONCE TOO OFTEN THAT EQUALS 202BHP PER ENGINE!!!!!!!!!!!!!!!!!!!!!!!!!!
I sent an e-mail to the magazine asking how this had been done and suggesting that perhaps Z-cars should look into quitting the car market and move into bike engine tuning.
I gave them a brief resume of Doug Meyers' career and suggested that he might be a tad curious to find out how they do it. In fact I offered to pay for Doug to come to the UK to find out.
It's now gone very quiet from the magazine and Z-cars......
... and the engines have both gone bang!
What I was going to do, if everyone posts an opinion on the above, is direct Z-cars and the kit car magazine to this site and string.
Comments anyone?
  
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tearinitup
Expert Class
VP Code Monkey
Posts: 298
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posted August 19, 2002 08:58 AM
 Edited By: tearinitup on 19 Aug 2002 09:59
On the website they are only claiming... 360 hp it looks like. Seems like a reasonable figure to me.
http://www.zcars.org.uk/z100wr.htm
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entropy
Moderator
Posts: 8671
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posted August 19, 2002 09:58 AM
at the crank...
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This moderator uses moderation in moderation
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MikeM
Novice Class
Posts: 49
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posted August 19, 2002 12:30 PM
Power still seems optimistic
Yeah, the website seems to disagree with the figures the magazine published, I guess 404 sounds a little like 360!!!!!
I still think 360 sounds a little optimistic. We, as ZX12R owners, spend hundreds, if not thousands, trying to improve an engine and management system that Kawasaki have spent millions developing. The engine mounted in a bike with all the sensors and readings exactly as the manufacturer intended, the ram air system intact and it makes as a best case 178bhp at the crank (from the factory manual '01 model).
So z-cars remove the ram air system which, looking back over past threads seems to be worth about 8% of max power, junked all the sensors that Kawasaki thought were neccesary to produce max performance (and still be road legal for noise and emmisions, in the UK a kit car has to go through Single Vehicle Acceptance testing (SVA) where noise cannot exceed 101db @ 5000rpm on a static test and must have catalytic converters fitted) and fitted an ECU/Efi system that appears to have no track record of improving ZX12 performance. The mappings being used are generic and are not tailered for the instillation. I think 310 bhp @ cranks is realistic.
The only benefit I can see from the two bike engines in one car is the impressive amount of torque available, but if you fitted one engine with a bespoke instillation, lowered the gearing (wheel size, dif ratio etc) to the point where a max speed of 90-100 mph was all you could get i wonder if you beat their figures?
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swft
Needs a life
Full throttle!
Posts: One MEEEEEELLION
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posted August 19, 2002 03:24 PM
The Motec system is going to use a fair amount of sensors. Having just put the Muzzy EMS (DTA box) on my 1347, I can tell you that it uses most of the sensors the factory ECU does. And I would imagine that most of those 'millions' spent developing the ECU were for emissions.
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MikeM
Novice Class
Posts: 49
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posted August 20, 2002 12:15 PM
Swft, have been following your progress with the Muzzy ems with great interest. The Z-car has is road legal so has to meet the same, or more stringent, emmision test that the bike does. Both for chemical and noise emmisions.
The only work done on the engines to suit the car instillation is to have had a lightly baffled sump fitted, and they have gone bang! Symptoms sound very similar to your engine that lunched....oil starvation. The clutches were unmodified and appear to have shed fibre in large quantities restricting the pick up filter. I suppose repeated 0-60 launches of 660kg of car will take it out of a modified clutch, let alone a standard one?
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