700bhp for 10k 'spec me' thread!!

[Lashout_UK]

Old Lexus LS400 + boost + N2O + Intercooler = 700BHP+.

Briefly, maybe, but it'd run the 1/4.

 

[burns]

I think if I was doing it it would involve

3rd Gen 350 TPi Camaro: £2000
Twin turbo kit: £1000
TKO600: £2000
The afformentioned forged stroker kit: £550
Allow 1k-2k for a stronger rear axle, spend the rest on hookers and blow.

This is the turbo kit:
http://cgi.ebay.co.uk/Chevy-SBC-Twi...r_Truck_Parts_Accessories&hash=item3f01adc58f

I would guess it would make 700bhp at least once before dying of cheap chinese-ness.

 

[turbotoaster]

Early MKIV Supra 6 speed, probably pick up a shabby example for around 5k.

2JZ-GTE engine is solid, good for silly power (would need to work on internals to have it last any massive length of time though)
6 Speed GETRAG box good for silly power too.

£5k left for big single turbo kit and some new cams, obviously you would have to fit it yourself.

Job done.

you wont get a 6speed supra for 5k i dont think, you may get a very ropey auto, but luckily that will hold the horsepower anyway.

want to expand on your bolt-ons, what turbo etc, remember you have to cover all the fueling, injectors, cooling, things like that all add up

R32 GTS-T, GTR if you can get it in budget, with a massive ridiculously laggy single turbo setup? First thing that springs to mind. Beyond that I'd agree with the above 2JZ Supras.

same as above, if your suggesting something you need to say how you would do it within the budget

Old C4 Corvette : £3200
HP Performance complete single turbo kit : £3800
Forged 383 stroker kit : £550
Larger-bore performance exhaust system : £350
Performance fuel system : £250
Performance ignition system : £250
Uprated radiator : £230
Uprated oil cooler : £60
High performance trans rebuild kit : £89
TCI Torque convertor : £180
67mm turbo upgrade kit : £900

Total cost : £9859.

Hell, you could even give it a good service as a bonus

Resulting power at this point : Circa. 1000-1300BHP & 800-1200ft.lb without nitrous.

Obviously that's a bit over what you were looking for but hey, why have 700 when you can have over 1000!

You could reign it in a bit though, save the £900 on the 67mm and retain the stock 60mm turbos and that would run 800BHP and 700ft.lb - which would be more than enough and a bit more controllable, less stress on the car as a whole too.

You could build a real budget 700BHP C4 for a lot less but that's just a quick example with off the shelf parts - for example you could buy just the car, the forged 383 kit, a few intake and exhaust bits, and a 200BHP shot of nitrous and you'd be up to and over 700BHP without too much fuss, for a few thousand quid - so you could spend money on the rear end, suspension, tires and brakes to make it a really streetable car

now this is what im talking about, loads of info and you have done a fair bit of research

what ecu are you using to map it, does the turbo kit include it?

A standard Viper Green 1.4 Scirocco 10K deposit, rest on finance.

almost as quick as a 'mapped' 335d haha

 

[Lashout_UK]

turbotoaster, the kit comes with uprated injectors (but I specified £250 quid anyway to further uprated the pump/fuel pressure regulator/filter system).

With regards to controlling the fuel, you use the car's original ECU - The original chip can be removed and completely reprogrammed to any specification desired, so you only need an EEPROM reader/eraser/writer (or know a decent tuning shop) to get it bought up to spec with regards to keeping the fuelling right

I believe the kit I specced is supplied with an appropriate base PROM for you to drop in depending on your setup, which may get you bang on the money anyway.

In a review of one of those kits they bolted the cheapest version to a stock 350 TPI (so a standard 5.7, not the stroked version like in my spec) motor and got:

After tuning to provide 20 degrees of total timing and a safe air/fuelmixture of 11.75:1 (with the supplied injectors), we were rewarded withan even 500 hp at 4,800 rpm and an incredible 611 lb-ft of torque at 3,800 rpm. As expected, the addition of 8.3 psi of boost pressure simply amplified the naturally aspirated power curve. The horsepower still peaked at 4,800 rpm, and the engine speed for the torque peak was actually reduced from 4,000 rpm to 3,800 rpm. Even more impressive is that the HP Performance system has room to grow should you decide to build a dedicated TPI turbo motor. Seven hundred pound-feet at the tires, anyone?

The stock transmission and diff won't handle that kind of output all day long but they will put up with it for a while, before you pretzel a driveshaft, provided the traction is the weak link. Just a case of balancing the upgrades so you get the best combination

Here's a later LT4 engined C4 with a single turbo kit:

906BHP and 896ft.lb! AT THE WHEELS!

 

[Johnnytoxic]

turbotoaster did you used to have a renault 5 turbo?

 

[Clarkey]

Cheapest 2JZ-GTE powered car you can buy, probably an Aristo V300. Big turbo, fuel system and management, done. Probably want a V160 swapped in too, maybe the auto will hold out for a single drag though

 

[turbotoaster]

turbotoaster, the kit comes with uprated injectors (but I specified £250 quid anyway to further uprated the pump/fuel pressure regulator/filter system).

With regards to controlling the fuel, you use the car's original ECU - The original chip can be removed and completely reprogrammed to any specification desired, so you only need an EEPROM reader/eraser/writer (or know a decent tuning shop) to get it bought up to spec with regards to keeping the fuelling right

I believe the kit I specced is supplied with an appropriate base PROM for you to drop in depending on your setup, which may get you bang on the money anyway.

The stock transmission and diff won't handle that kind of output all day long but they will put up with it for a while, before you pretzel a driveshaft, provided the traction is the weak link. Just a case of balancing the upgrades so you get the best combination

Here's a later LT4 engined C4 with a single turbo kit:

906BHP and 896ft.lb! AT THE WHEELS!

i did wonder about the fueling, but since it looks like just sticking a big pump and fpr on there than 250 should cover that

the reason i asked about the ecu was because i think the old corvette was N/A hence i dont know if you can rig up a cheap GM 3 bar map sensor to read the boost or they are just adding in fuel at set rpm vs throttle position

Im suprised the diff wont take it because a lot of rx7 lads pinch the corvette rear end when they start running 9s qtrs or faster

a lot of people say the 2jz and i agree, running a gt42 turbo on a stock lump should yield 700bhp, you could run a smaller turbo and get that power but you would mostly have to spend money on cams/ported head so thats more expensive.

if you got an aristo gs300 its pretty much a supra saloon without the tax hence super cheap.

your looking £1200 for a turbo kit
£700 for all the fueling
£300 for intercooler, pipes and rad
£500 for ecu
£300 ignition setup

That would about do it, pick up a car for around 3k and it might even be possible to do it all for close to £5,000!

turbotoaster did you used to have a renault 5 turbo?

i did indeed yes, do we know each other?


EDIT: dammit clarkey you beat me to it

 

[Disco Boy]

turbotoaster did you used to have a renault 5 turbo?

Yes he did, read his other thread.

 

[Lashout_UK]

i did wonder about the fueling, but since it looks like just sticking a big pump and fpr on there than 250 should cover that

the reason i asked about the ecu was because i think the old corvette was N/A hence i dont know if you can rig up a cheap GM 3 bar map sensor to read the boost or they are just adding in fuel at set rpm vs throttle position

The stock MAF can handle the additional airflow to a point and more can be compensated for by using the power enrichment mode of the ECU to supply extra fuel for any given RPM. Obviously it's a bit of a workaround but still - better than nothing! You can get FMUs (FPRs) to suit boosted applications too, as you say, to dump more fuel in if necessary too.

Callaway did make factory turbocharged C4s though, the most powerful factory car you could spec was the B2K which delivered 403hp and 582 lb·ft. They built the Sledgehammer too, that made 880BHP and did 254mph...all road legal.

Im suprised the diff wont take it because a lot of rx7 lads pinch the corvette rear end when they start running 9s qtrs or faster

Oh it'll take the sort of 400-700ft.lb region OK provided its in good health (although the UJs and shafts might complain after a while) - but there's no hard and fast limit for rear ends really, with super sticky tires and high RPM launches being a killer for pretty much any factory setup with huge torque levels - so I was just being wary.

You can usually be a lot more aggressive, in terms of output, with a rear end if you're running an autobox, as it takes some of the shock out of the powertrain.

I was also more thinking about the sort of 800/900ft.lb limit that a top spec turbo setup would deliver - that'd be more than it can handle.

 

[turbotoaster]

ah yeh, thats a fair bit of grief, i was looking at more 550-600ft.lb and 1.3-1.4 60fts so nothing massive, thats running on full drag slicks but like you say, add another 300 on top of that and its a whole different ball game.

the sledgehammer sounds fun, go baiting supercars with that, though we have a lot more corners over here than america so not that easy to just start doing some 100-200mph highway pulls the yanks love.

the only advantage jap/euro cars have over the americans is weight but then when your going in a straight line the ability to massively outpower your closest rival in power to weight makes up for the cornering performance to an extent.

Im guessing you go to the big drag events at pod, top fuel making your eyes wobble never gets old!

 

[Johnnytoxic]

i did indeed yes, do we know each other?

In the festival park old days, going back a few years now. I was the idiotic one who got banned for racing .

 

[Kenai]

get an orange, burnt out, two-jay-zee (no ****!!) which is in fact a 3.0 non turbo supra and then put 15 grand of over night parts from japan under the hood

easy

That bit always baffled me in the films, I mean really, why was he so surprised? What else did he expect to see in the engine bay of a Supra?

 

[Lashout_UK]

the only advantage jap/euro cars have over the americans is weight but then when your going in a straight line the ability to massively outpower your closest rival in power to weight makes up for the cornering performance to an extent.

I dunno, a Corvette is quite light in some respects - consdering they always comes with AC, electric everything, full leather, big stereo system, usually T-tops, heavily sound deadend interior, stuff like that - in order of weight:

E46 M3 CSL : 1385kg
Corvette C4 : 1469kg
Lexus/Toyota Soarer : 1596kg
Porsche 928S : 1629kg
Supra TT : 1642kg

I think a TT RX7 is about 1300kg? So the Corvette is almost 200kg fatter than that Nothing a good bit of carbon fibre and lighter alloys can't sort though

Even something like a mid 80s Camaro V8 usually clocks in around 1500kg, so not too bloaty - but definitely getting up there.

 

[turbotoaster]

In the festival park old days, going back a few years now. I was the idiotic one who got banned for racing .

well that doesnt cut it down at all, most people got in trouble for racing, thought doing 60 laps a night at 110mph+ past pc world sure honed my skills, what car did you have?

I dunno, a Corvette is quite light in some respects - in order of weight:

E46 M3 CSL : 1385kg
Corvette C4 : 1469kg
Lexus/Toyota Soarer : 1596kg
Porsche 928S : 1629kg
Supra TT : 1642kg

I think a TT RX7 is about 1300kg? So the Corvette is almost 200kg fatter than that Nothing a good bit of carbon fibre and lighter alloys can't sort though

Even something like a mid 80s Camaro V8 usually clocks in around 1500kg, so not too bloaty - but definitely getting up there.

the rx7 is 1250kg so not far off, mine currently is 1180kg, with the intention to take it down to 1100kg by next year which aswell as making you quicker takes a little bit of pressure of your components.

the corvette is pretty good weight wise then, the new ones have independant rear suspension yet? as they seem pretty nippy around the ring which goes reward half decent suspension setup

 

[Lashout_UK]

They've had fully independant suspension since 1963!

The C4 gen onwards too are always pretty trick - forged aluminum front A-arms that form part of the unequal length double wishbone suspenion, sports shocks, a single transverse composite spring at each end (that also does the duty of the ARB), five-link rear geometry (with trailing and lateral links) and more...A lot of them rolled out with electronically adjustable suspension too

 

[turbotoaster]

wow, much better than i expected, remember watching a top gear along time ago and he was on about the prehistoric suspension setup hence i did wonder.

I think when you start getting to 600bhp+ it is true that theres no replacement for displacement, yes you can make 2.0ltr engines make well over 600bhp but the outlying cost dramatically goes up compared to something with a much larger engine in the first place.....a 'cost per bhp per litre' if you will

 

[danewesley]

just check out zcars, id get a mini shell and whack a hayabusa turbo engine in it, blitz anything on the strip, also check out gatebil videos, the norwegian/swiss car scene is amazing, vs motors, jonas etc.

 

[Disco Boy]

Your job is to build a car that will do 700bhp for a total of £10,000

, id get a mini shell and whack a hayabusa turbo engine in it

You missed the point a bit there...

 

[BigglesPiP]

AUDI S2 and a bus turbo...

 

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Really? You think they're ugly? Never had a bad word said about any of mine, had to beat people off with a stick for the most part

Strange lad



You have to remeber that these things were designed in the early 80s, for one thing........

Anyway, we're here for 700BHP talk, continue![/QUOTE]

I think you should be banned for posting such porn.

Might as well just sell the DC2 and get one of those proper cars. That C4 in black looks sexual!