4WD Ultima now see the pictures..

[gtrclive]

Z Cars have now updated there sight, to show the Sports that now has the twin 500bhp Busa motors with 4WD

www.zcars.org.uk/ultima/ultima-background.htm

Shame it's gone to Spain, would like to have seen it in the flesh....

[gtrclive]

PS check out the Mini, there's a nice clip of the R1 Mini.... Just imagine that with 420BHP Busa Turbo.....

[mclark]

£130k........ wow

Bang goes the budget!

[MEMSDesign]

It looks very well engineered, but 500bhp from each 'busa engine - won't that be a bit peaky? Is it even possible to get a reliable, usable 500bhp from a 'busa engine. I'd have thought that 300bhp would be pushing it?

[gtr-gaz]

A lot of talk about what it is capable of, but no actual road test or performance figures!

Why is that?

Gary

[ultimasimon]

Anyone recognise who's car it was previously? I wonder if they will offer a conversion package for existing Ultima owners who want something different.

Z Cars said:

Ultima sports with half a tank of fuel fully trimmed for road use with all other fluids ready to drive Powered by two turbo charged Hyabusa engines giving 1000 bhp Weight 980 kilos Front axle 480 kilos Rear axle 500 kilos Power to weight ratio 1020 bhp /tonne Four wheel drive Performance figures yet to be confirmed but expect record breaking results in every respect

Looks like they improved on the weight distribution slightly. Also done properly with Motec etc, I am looking forward to seeing the performance figures.

From the small pictures its not easy to see clearly where everything fits.

I wonder what the under canopy temperatures reach when both these little motors have been spanked for a few hard miles



edited to say: More proof that the scoops are needed to help improve the air circ.

>> Edited by ultimasimon on Thursday 6th January 10:33

[activems]

I doubt they got any helpful info from the factory either as they normally bite anyones head off who dares mention 'bike engined ultima'.

Will be interested how well it goes.

[gtrclive]

There is no doubt that a Chevy will out last those engine 10 times over but --- in a world going mad on Polictal Correctness, why not

You just gota like the bloke for doing it... even if it's as peaky as hell ( doesn't build boost below 7,000rpm with those turbos ) and maynot make it round a 4K miles Eurohoon holiday..

Just Respect for having a go and seeing what can be done, now wheres the Stig and that Test track.... Bring it on Clarkson....

[Paul.B]

I hope they plan on fitting a wing to that! Otherwise it may break more than speed records. Who ownes the altitude record for cars? Mercedes?

Paul.B

[shithotfast]

I notice no wing...? I know of a few sports drivers who drove the car without a rear wing.... at any real speed the rear end floated!!! At 200 mph driving will be real fun. The sport has no downforce ability built into the body, hence the massive wings....

[davejw]

Mad and I quite like it - although the Mini caught my eye too!

Talking of wings - I took the Sports to the Ring and was forced to drive without the Wing while the 'officials' checked the rules - something to do with decapitating distracted motorcyclists...

Can honestly say it was horrible - back end came out at the exit of Flantzgarten 2 (the blind over crest left with steep downhill drop off that turns right while still decending) at around 120 and put me in a sweat! Good news is that the German officials did check and said it was legal - would you get that over here????

Cheers,

Dave.

>> Edited by davejw on Thursday 6th January 22:29

[busa_rush]

gtrclive said:

There is no doubt that a Chevy will out last those engine 10 times over but --- in a world going mad on Polictal Correctness, why not You just gota like the bloke for doing it... even if it's as peaky as hell ( doesn't build boost below 7,000rpm with those turbos ) and maynot make it round a 4K miles Eurohoon holiday.. Just Respect for having a go and seeing what can be done, now wheres the Stig and that Test track.... Bring it on Clarkson....

Really ? Maybe you'd like to do a bit of reading ?

[gtrclive]

busa_rush said:

gtrclive said: There is no doubt that a Chevy will out last those engine 10 times over but --- in a world going mad on Polictal Correctness, why not You just gota like the bloke for doing it... even if it's as peaky as hell ( doesn't build boost below 7,000rpm with those turbos ) and maynot make it round a 4K miles Eurohoon holiday.. Just Respect for having a go and seeing what can be done, now wheres the Stig and that Test track.... Bring it on Clarkson.... Really ? Maybe you'd like to do a bit of reading ?

?????????

[RichardD]

Something that no one has mentioned (unless I missed it) is that it has one engine for the front wheels and one engine for the back wheels.

500bhp to the front wheels is excessive?
500bhp to the back wheels isn't enough?

[osborni]

I was wondering how they are managing the differential speed and power requirements to the front and rear wheels. Doesn't Motec have a traction control option?

Prior to the Z-car photos, I expected them to run both motors through a custom mounted LSD center diff. But what do I know.

I saw in a US hotrod magazine not to long ago that somebody has mounted 2 Hayabusa cylinder/head packages on a bespoke block with a 180* crank. I think it said it should put out 400 hp or so at 10k ish rpm

[Paul.B]

osborni said:

I was wondering how they are managing the differential speed and power requirements to the front and rear wheels. Doesn't Motec have a traction control option? Prior to the Z-car photos, I expected them to run both motors through a custom mounted LSD center diff. But what do I know. I saw in a US hotrod magazine not to long ago that somebody has mounted 2 Hayabusa cylinder/head packages on a bespoke block with a 180* crank. I think it said it should put out 400 hp or so at 10k ish rpm

I know when they have installed twin engines in the 4WD Tiger they have used a Motec management system that could be used as a 'virtual' diff. It would reduce power to the engine driving the front when steering lock was applied. This would help elliminate understeer. Because the engines drive seperate axles through independant 'boxes there is no problem with one end running at different speeds. I have even seen one of their cars running different gears, say 4th on one engine and 5th on the other. The lower geared engine just rev'd higher to keep up. You can even run with only one engine.

Personaly I'm not convinced it is the right application for an Ultima. But as Clive says. Hats of to them just for the sheer anti PCness of it all.

Paul.B

[WilldJ]

Noticed the low stance and extended front air dam, might help compensate for the lack of rear wing.

[GreenV8S]

WilldJ said:

Noticed the low stance and extended front air dam, might help compensate for the lack of rear wing.

I would have thought that adding downforce at the front would make the problem of rear end lift much worse. Firstly because the splitter throws more air over the top of the car which will increase the rear end lift slightly, but more importantly by having downforce at the front it will increase the imbalance between the front and rear. This is likely to lead to high speed oversteer.

[Paul.B]

I would hope the wing has just been removed for picture taking purposes.

Paul.B

[Alan 2]

If anyone is planning to visit "Autosport International" at the NEC then don't miss the Hayabusa powered Ultima which has been talked about on this thread. If it goes as well as its engineered then it should be some car. Two, 1.3 litre turbo engines give (a claimed) 900 bhp at 1.5 bar boost. Total weight is 980 kg and it has inboard suspension and 4 wheel drive. I've taken some pictures but don't know how to post them to this site.