An awesome request, but on the insane side.

[SR Performance]

I thought I share with you fine folks a really cool build.

 

Our customer wanted something a little more down the straight away. After a month of going back and forth on what could we could do to get some extra ponies to the ground. So we decided a small turbo set up will get us an easy 100 rear wheel horsepower. I snap some photos of the turbo set up.

 

http://i256.photobucket.com/albums/hh171/SnRPerformance/caterham/IMG_0793.jpg

 

http://i256.photobucket.com/albums/hh171/SnRPerformance/caterham/IMG_0788.jpg

http://i256.photobucket.com/albums/hh171/SnRPerformance/caterham/IMG_0690.jpg

http://i256.photobucket.com/albums/hh171/SnRPerformance/caterham/IMG_0692.jpg

[snookwheel]

Beautiful! Did you fab the header set-up?

[SR Performance]

Everything is fab up by us except the water tank.

http://i256.photobucket.com/albums/hh171/SnRPerformance/caterham/IMG_0789.jpg

[Mondo]

Nice work!

Is that bare aluminum siding or is it silver... going to be some serious heat around there. You might want to line it with this:

 

http://www.koolmat.com/heatmast.shtml

 

Look forward to the dyno.

[Alaskossie]

Is that a Caterham Series 3 chassis? (didn't think a turbo would fit....)

 

Where does the exhaust exit now?

 

That looks like a Ford Duratec motor...what do you think the overall hp and torque figures are now?

[SR Performance]

This is a water to air intercooler with an heat exchanger in the front of the car

http://i256.photobucket.com/albums/hh171/SnRPerformance/caterham/IMG_0786.jpg

[SR Performance]

Is that a Caterham Series 3 chassis? (didn't think a turbo would fit....)

 

Where does the exhaust exit now?

 

That looks like a Ford Duratec motor...what do you think the overall hp and torque figures are now?

 

That is an Ford Duratec, the Duratec can support 350hp, low 300's torque. The question is, can the owner hold on?

 

The factory exhaust runs the same route, so from the outside you will never know there is a turbo under the hood.

[scannon]

Great fabrication job. How much boost does it take to get 350 HP? Will the stock internals support that much power?

 

What was behind the decision to go with water/air vs. air/air charge cooling?

 

That looks like an SV chassis with that much room between the motor and frame rails.

[SR Performance]

Thanks, I have some really gifted people that work for me. Its really hard to say with this engine. I know from experiance that S2000 at 10lbs will make 400hp to the rear tires. The Honda has a higher compression and a better head flow and of course 9500 rpm readline. I would guess the Duratec on pump gas at 11 psi 265 to 300 to the rear tires

[WestTexasS2K]

We run our s2000 with 14lbs and made 386 rwhp on e85. Kraft Werks supercharger runs 274 rwhp at 9 psi on the S2000 engine. Both of us are using Rotrex superchargers. I guess the turbos is more efficient if you are getting 400 rwhp at 10 psi.

 

The fab work looks good very clean looking. 7evin is using an air to water intercooler on his

new set up. It is pretty tough to get an air to air big enough in the nose of a 7. Give us feed back on what the customer thinks with his new found power.

[SR Performance]

We are a Kraft Werks pro installer. Last one we did was a AP1 with a AP2 engine, full stand alone at 10 psi made 409 to the wheels.

[WestTexasS2K]

What brand of dyno do you use? Do you ever do a run before install of the Kraft Werks kit to see what the gain is on the same dyno? I have seen dyno with a pretty wide swing in readings from one another. If you are getting 409rwhp from ten pounds boost that is more than double stock power level of a na AP1 and

AP2. All the NA s2000 I have dynoed run 186 to 199 rwhp. I have only done this on three cars on the same dyno so maybe his is reading a little low. In the end the numbers don't really matter it is how the car performance changes that is the goal.

 

Keep us updated on how the turbo works out on the 7.

[jturrell]

That looks like an SV chassis with that much room between the motor and frame rails.

 

I believe it's a narrow chassis. Looks like the first USA R400. It was later for sale at Aston Martin Orlando:

 

http://aston-martin-orlando.ebizautos.com/detail-2008-caterham-r400-superlight-used-4011672.html

[twobone]

I love the dealers description. It makes me yearn for a drivetrain upgrade:

 

I am bruised and aching. My ears are ringing. I've used up all my adrenalin and when I go to haul myself out of the car I find I'm as wobbly as a newborn giraffe. My scalp is tingling, my eyes are stiff. My face has been wearing a type of grin induced by a mixture of fear and exhilaration. I've been driving our Caterham R400. The R400 was absolutely mind-blowingly stupidly good. Under load the rev happy engine fairly tears the air apart as it fires you forward with such angry potency. You think you're accelerating fiercely, then you discover the throttle's only half way down. Press it all the way and all hell breaks loose. Suddenly you're ripping down the road, the torque whipping up those big rear boots while you lever the gearchanges back and forth, as rapidly as you can, up through the six tightly stacked gears. Waaarp - waaarp - waaaaaaarp. With each new slug of power you feel the rear of the car going light, and when it starts to snake in fourth at 70mph-plus you know what 400bhp per ton really means. When you come back down to normal road speeds the R400 feels unhappy, you can almost sense the car tut-tutting and rolling its eyes, but when you let it loose again it all just works. The suspension, those front wheels bobbing around in full view, is firm but never seems to get seriously unsettled and the trade-off is the most absurdly high steady-state cornering speeds. It is a very physical experience - the whole car pulses to the engine's industrial metal beat. With shortarm jabs at the tiny, chubby-rimmed wheel and the alloy gearknob, barely protruding from the centre tunnel so short is the lever, you batter journeys into submission. It's full-on, just about as big a hit as it's possible to get in a road car.

[yellowss7]

I love the dealers description. It makes me yearn for a drivetrain upgrade:

Waaarp - waaarp - waaaaaaarp. With each new slug of power you feel the rear of the car going light, and when it starts to snake in fourth at 70mph-plus you know what 400bhp per ton really means.

 

What Car was he driving? 70 in 4th? Hell that's Not right. 70 is at 8000K in 2nd or just shifting into 3rd maybe, but 4th???

 

70 in 4th is just a leisurely jaunt. Not a pedal to the metal moment. :driving:

 

Tom

[jturrell]

Here's a link to the original EVO article the quote came from:

 

http://www.evo.co.uk/carreviews/evolongtermtests/37431/caterham_r400.html

 

I'm looking forward to hearing more about the turbo. Was the stock MBE ECU retained?

[Croc]

What Car was he driving? 70 in 4th? Hell that's Not right. 70 is at 8000K in 2nd or just shifting into 3rd maybe, but 4th???

 

70 in 4th is just a leisurely jaunt. Not a pedal to the metal moment. :driving:

 

Tom

 

Well funny enough he was driving a Rover K series engine R400....

 

Evo article Quote: "It doesn't sound much cop when it's idling, like a kilo of bolts in a cement mixer. "

 

So...how many pounds of bolts you got in your cement mixer Tom?

 

Maybe its like the owner - a beer short of a six pack? :jester:

 

Cheers

[yellowss7]

Ok that didn't work. Mike I only have 196 bolts in my K series. It's those hydraulic lifter motors that rattle a bit. Solid lifter ones not so much.

 

I tried to copy my MPH/Gear calc spreadsheet into this post but it didn't come out right.

@ 8000 Rpm @ 7000

 

53.5 in 1st 46.8

71.6 in 2nd 62.6

90.5 in 3rd 79.2

109.0 in 4th 95.3

127.3 in 5th 111.4

143.8 in 6th 125.9

 

That's with the Caterham 6 speed, a 3.62 diff, and 205 55 13 avons.

At Max revs 8000. If I hold it back to 7000 rpm its slightly less.

Edited September 11, 2010 by yellowss7

[Sean]

Tom,

 

I think the intent may have been different than your interpretation. When I read the line:

With each new slug of power you feel the rear of the car going light, and when it starts to snake in fourth at 70mph-plus you know what 400bhp per ton really means.

 

I interpreted it to mean that even at 70 mph in fourth gear, the rear end starts to "snake" when full welly is applied, which most cars will not do. But then again, maybe not - who knows what those wacky Brits really mean sometimes?

[Kitcat]

Sean:

 

Ditto: you know you have "ample" power when you can break the rears loose when you drop the hammer in 4th, whilst putt-putting along at 70mph.

 

Mike

Edited September 11, 2010 by Kitcat