Jasper
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| posted on 22/11/07 at 03:25 PM |
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Alez - if the Chevy is the 'wrong' engine, then why is it one of the fastest road cars on the planet around a track????
The only engine for the Ultima is the new LS7 Chevy engine, £7k brand new, 550+ bhp and over 600 lbft of torque, AND reasonable fuel economy when not
booted. Why bother with anything else ????? And it will last for ever...... and it's sounds great ......
If you're not living life on the edge you're taking up too much room.
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Alez
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| posted on 22/11/07 at 06:41 PM |
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I've had the opportunity to chat about this with the guy, who btw didn't get the engine in the end (I was wrong) because the guy who was
selling changed his mind apparently.
> Hi did the ferari engin come with the gear box? if so one point of this combo is the f1 stile shift and megneto wheal??
My friend said that, contrary to what I thought were his reasons, he wanted to swap because he couldn't find a sequential gearbox that would
cope with the huge torque, so that's a yes
> How about the use of turbos or a supercharger? Would that be desirable or not? Otherwise, something like the turbo RS6 engine?
It would be interesting to drive one and compare it to a naturally aspirated Chevy one, I think.
> what's the point when they can supply a small block or an LS cheve that makes the same if not more power and is already packaged to suit
the car?!
The point, as mentioned by TKS, was to get a more race oriented car. But then my friend just told me that his car actually revs up to near 7k, which
means I don't have so much point anymore. HIS point was to go sequential, only I didn't know that until yesterday.
My (wrong) reasoning came from my experience with my 4.5 Rover V8. 270 bhp, 700 kg car (or 400 bhp per tonne), and even so not exactly ideal for the
track I'm afraid. Reason? It's RPM range is not great, it just "wants" to run at a certain RPM all the time, and its huge
torque will force you to it, that basically means you end up with 6 different car speeds you can drive at, with little variation!! I wouldn't
want the nice and refined GTR to be any similar to that. But then my friend said near 7k rpm, so all the problem was in my head it seems.
> LS1/6/7 would be the way to go if you are worried about qualities of an earlier one
OK, so it seems  Actually he mentioned that, since he didn't get the F430 one, he plans to swap to a LT5 he's had lying around for a
while.
> The Italian stuff will be nice when it comes in you new car but as soon as it's warranty starts expiring, I'd be desperate to get rid
of it.
Exactly my concern, and the reason why I opened the thread.
> He obviously has money to throw away, so tell him to sell current car and commission Ultima to build him a car around a different engine.
Not "money to throw away", just money and passion, he's a former racer of some scary s***t after all. The fact that he has money
doesn't mean he can afford everything. Plus he is a builder (just finished a race spec Cobra built around a Magnum chassis).
> Leave the Ultima alone and talk him into building a P4 replica around the engine?
I've thought so much about that as well. A GTR is sooo ugly when compared to the P4. But then Ultima have THE chassis, and at the end of the day
that's what you want I think.
Thanks for all your answers and proposed engines (incl. the F-1 one, yo nutters I said reliable!) which confirm how much of an insane bunch you are!!
Cheers,
Alex
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Alez
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| posted on 22/11/07 at 07:58 PM |
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quote:
Originally posted by Fred W B
Look into bringing a RCR P4 kit from the states. $26,495 for the standard kit
RCR replicas
Hold on a second.. I've been browsing the website and these apparently use an aluminium monocoque chassis and stuff like that  $26.5K?????
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Fred W B
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| posted on 22/11/07 at 09:18 PM |
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That's the US dollar rate working well for the Europeans at the moment. RCR do a seriously nice chassis, well respected in the GT40 scene at the
moment. See http://www.gt40s.com/forum/ for more, look at RCR forum and build diary sections
Cheers
Fred W B
You can do it quickly. You can do it cheap. You can do it right. – Pick any two.
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Alez
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| posted on 22/11/07 at 10:22 PM |
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RK
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| posted on 22/11/07 at 10:23 PM |
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How fast does he intend to go? You can't go half as fast as some of these cars are designed for as it is! Unless he's in Germany, and
they're just mental - with the mental fatal accidents to prove it.
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tks
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| posted on 22/11/07 at 11:23 PM |
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7K isn't very much much...
also it will depend on the curve of BHP and torque...
ideally you would like the curva like an electro motor has, constant torque from 0 rpm..
than your acceleration will be linear...
tks
The above comments are always meant to be from the above persons perspective.
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crafty
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| posted on 4/1/08 at 01:32 AM |
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Ive got a supercharged LS2 in mine
Magnacharger on a completely stock LS2 with stock cast iron manifolds and stock 2.5" cats it made 578HP 555ft/lb ... EURO4 emissions
compliant
OR
Jeff's built a couple of twin turbo 1000HP engines....
The Audi engines are nice too:
Ultima GTR - 600hp Magnacharged LS2
MNR Vortx - Supercharged R1
Porsche 356 - midmounted Audi V8
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cossiebri
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| posted on 4/1/08 at 06:54 PM |
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A friend of mine has a big block chevy powered pro street capri that knocks out around 600 hp on a holly carb- he's just ordered from the states
a complete fuel inj/ign set up and a couple of 'matched turbo's that will give him.......1300hp at 7psi cost him £3500 for all the
bits (the engine stands him in at £14000 at the mo not inc the new stuff! it's built around a merlin race block? with cnc ali heads that have
mahoosive valves,electric water pump, balanced and matched crank/rods etc,eyc
If it doesn't fit MODIFY it!!
Cheers BriF
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