From what I can gather, it's a stock Duratec, nitrous ready.

All the buyer has to do is install the bottle and line.

It DOES void the Ford powertrain warranty, I think.

The Duratec is good to at least 200 horse with stock rods and pistons, though.

After that, it's time to swap those pieces out for stronger stuff to about 260-270 horse, then you nedd a stronger than stock crank.

The block is good to ?; more than you'll ever throw at it for street use.

 

Someone awhile ago mentioned 1000hp for the block, but that seems a little out there unless it had stronger sleeves.

 

Fall 2004 issue of Focus Fanatics says...

...the 10 pound bottle is empty, one supply hose is not installed nor is the final bit of wiring.

Steve says one hour of labor will enable nitrous operation, an act that voids the powertrain warranty but boosts the fun meter from ho-hum to holy cow!

We can't imagine buying the N2O Focus and not using the nitrous, but if that's the case, then there are still the benefits of a Saleen air filter and a Saleen center exhaust. That, and the naturally satisfying power afforded by the all-aluminum, DOHC, four-valve 2.3 Duratec. There is also the Saleen PowerFlash rewrite of the engine management computer that aids power with a cleanup of the ignition and fuel tables where they might need it, along with helping the nitrous operation, we assume.

The remainder of the N2O's powertrain remains stock. One benefit to the 2.3 engine is it is fairly mechanically robust--something of a rarity from the factory these days--so the occaisional hit of joy juice is not going to decimate engine or transaxle longevity.

...With computer-controlled rpm safeguards in place, this Foci's nitrous will not flow until around 3000 rpm and it is automatically shut off about 500 rpm short of redline.

Blah blah blah...

 

Just because the Duratec's a stout engine doesn't mean the nitrous is good for it. I know a kid who blew the engine in his N2O just two days after installing the bottle. You have to have self-control, even with the computer safeguards.

 

Also depends how much jet he was putting to it...

 

And when he sprayed. If you remember the guy that was testing the Venom kit, he blew his engine. Those tumble flaps will get you every time

 

As I understand it, the N2O doesn't have a spray button or any such setup. It has an on/off switch, and the computer just pulls nitrous when it's below 3000 or above 5750 rpm. He left the switch on.

 

I could of swore you had to wait until past 4700rpm to spray because of the tumble flaps. Maybe the N2O Focus is differant.

 

what the hell good is spray if you have to wait till 4700 rpm to spray? you'd need the tightest gearbox in the world and about 7 gears to cover the quarter-mile.

maybe Saleen figured out how to disable the tumble flaps.

 

Are we talking about the idle-airflow-speed tumble generators to induce swirl at idle?

Or are we talking about the secondary air butterflies at the cylinder head side of the intake manifold runners?

I really need to look inside of a Duratec manifold, because we have both and I don't know how the idle swirl generators are positioned in the runner...

 

Well saleen's setup is a direct injection. Meaning nossle tapped into each runner on the intake just before the head. This setup would not be affected by any kind of tumble flaps that are in the intake, and help avoid a nasty explosion.

 

So, in other words, it's not a 'wet-flow' nitrous manifold, it's more like a 'fogger' system, where, as you say, teh gas is injected pretty close to where the fuel is...at the port.

 

Just as a side note, I wonder why Saleen wouldn't sell an aftermarket nitrous kit for our car, with the computer-controlled spray, switches, etc... Sure it might be exactly the same as the Venom kit, for example, but Saleen can charge $500 above that and people will still pay for it...

 

It may involve an ECU re-flash as it is quoted from the article above.

 

Yes I figured you would have to do some tuning. The n20 focus requires 91 octane minimum and recomended 93 octane with the nitrous.

 

Maybe this kit with a 35 shot (beware PDF) http://www.nitrousexpress.com/Catalog/2005/stage1.pdf


Some tuning, and add on their rpm window switch set for roughly 3200 - 6000 rpms.

I think it should be safe. I'm thinking it would be safer with a different intake without the flaps.

 

We have a member on this board who has already blown a Duratec due to nitrous. I can't exactly remember his name, but he was working with Venom. I specifically remember that he couldnt spray until after 4700 rpm. I remember tumble flaps being used in the explination, but I thought those were just active at idle?

Anyways, people forget, but I am almost positive.

I guess it all depends on where you inject the nitrous.

 

What exactly are the flaps?

 

So nitrous is no bueno on the duratec?

 

I wouldn't say that. But we've only had one person play with nitrous. I forget why it went.

 

Humm so it has to be direct port?

 

The Fall Focus Fanatic mag has many pictures of the Focus n2o engine.. It clearly shows a single tap on the Saleen CAI before the T/B.. Not nozzles on each of the runners.

 

The Fall Focus Fanatic mag has many pictures of the Focus n2o engine.. It clearly shows a single tap on the Saleen CAI before the T/B.. Not nozzles on each of the runners.

If you read the description on saleens website it says direct injection nitrous.

 

I know that ford will do away with the warrenty but Saleen does something for you I have been told

 

The Fall Focus Fanatic mag has many pictures of the Focus n2o engine.. It clearly shows a single tap on the Saleen CAI before the T/B.. Not nozzles on each of the runners.

If you read the description on saleens website it says direct port nitrous.

http://www.saleen.com/n2o_focus_specs.htm

It's listed under the engine specs on this page.

But id did find this picture from under the hood which now proves otherwise. http://wraiser.com/VILLAFORD/SALEEN/N20_2005.htm