Nitros

Hi guys.I own the 156 2.5v6 and would like to fit notros as much as the motor can take.Any suggestions,anyone did that before?

I believe that most professional Nitrous company's will start you off with a 25BHP jet, see where you go from there, and if the engine can handle it possibly upgrade it to a 50BHP jet.

It really does depend on engine condition mate, as if your car has 150,000 miles on the clock and has been constantly missing services etc, then you'll be lucky if it can take a 10BHP jet.

But, as a fellow Alfisti, I assume the car has been well looked after, in which case I see no problem in a 50BHP Jet.

I have always considering on getting 'NOS' myself for a car, but I've not kept a car long enough to get around to doing it,

Who were you thinking of going to to get this done?

Moved to Tuning Lounge

You'd be better off sticking a turbo or supercharger on there, so it's there and you can use it all the time. Nitrox will only work while you're holding your finger on the trigger or until the gas cylinder runs out (which will be very quickly indeed).

Nitrox is a bit cheaper than a whole heap of X-charger ironmongery though.. you only need something to give you a higher fuel delivery while you're on the gas.

Nitrox works by releasing more oxygen when it gets heated up (i.e. in the cylinders) so the engine will run weak and melt if you get the fuelling wrong. This is the most likely cause of death with Nitrox.

You can theoretically dump as much gas and fuel in there as will fit.. but the beast has to be able to tek it. Your con-rods, pistons, bearings and crank were designed to cope with 220bhp or thereabouts. If you start gassing the motor to make 500bhp then those bits are going to try to escape.

Get the engine set up to produce a maximum of +30%. That should give you just under 300bhp with the taps open.. should be useful for the odd drag race. Any more than that will wreck your engine.

Fit new belts and tensioner... the old ones will get a shock .. and service the beast at half the normal intervals, especially oil and cam-belt tensioner. Fit plugs that are one grade cooler.

I'm not convinced about Nitrox though.. you have to prime it and you can only use the boost just while you're pushing a button. It's also pointless to use it on transient throttle opening (if you want to go quicker, just use more throttle).

So, it has (to me) a very limited usefulness. And unless the people you get the kit from know what they're doing, you WILL lunch your engine...

If you want more shove, more of the time, use a X-charger..


Ralf S.

Another thing with chemical supercharging with N2O is that you must never hit the rev limiter with the N2O injectors open. Modern rev limiters cut off fuel injection (as opposed to older ones that cut off ignition) which will make the engine run lean for a second. This is OK for a normal engine but for a N2O-supercharged one this second may prove enough to melt your pistons.

Ralf aint wrong.

Nitrous is a laugh, but for a decent system it's gonna cost the best part of £1000, well for little over that you could fit a Turbo, and at least that way you, as Ralf said, get the power all the time.

You don't have to bother refilling a Turbo / Supercharger up all the time.

And also, Nitrous is illegal for road use, whereas getting the beneifts of a 100HP Turbo isn't.

Originally Posted by mornay erasmus

Hi guys.I own the 156 2.5v6 and would like to fit notros as much as the motor can take.Any suggestions,anyone did that before?

My suggestion. Don't bother.

Originally Posted by Ralf S.

Nitrox will only work while you're holding your finger on the trigger or until the gas cylinder runs out (which will be very quickly indeed).

My bottle on 50hp jetting lasts about 2 weeks under occasional use, less if i go mad

Nitrox works by releasing more oxygen when it gets heated up (i.e. in the cylinders) so the engine will run weak and melt if you get the fuelling wrong. This is the most likely cause of death with Nitrox.

this is also why you are supplied with a 25hp jet to start with, you use this level to determine the required fuel/n2o mix, im using 2.5:1 and it works fantastically.

Fit new belts and tensioner... the old ones will get a shock .. and service the beast at half the normal intervals, especially oil and cam-belt tensioner. Fit plugs that are one grade cooler.

service it yes but i dont see why you would have to do it more regularly?! spark plugs, 1 grade cooler for every 50hp increment you run.

I'm not convinced about Nitrox though.. you have to prime it and you can only use the boost just while you're pushing a button. It's also pointless to use it on transient throttle opening (if you want to go quicker, just use more throttle).

that is so so wrong for a decent kit. go to wizards of nos, no need to 'prime' anything or purge anything, set up is at WOT not button that you press and you can set it up progressively too

So, it has (to me) a very limited usefulness. And unless the people you get the kit from know what they're doing, you WILL lunch your engine...

if you get a kit it MUST be a wizard of nos UK spec kit, nothing on the current market comes close to their quality. phone them and speak to Ant or Trev and they will put your mind at ease

If you want more shove, more of the time, use a X-charger..

and if you want a LOT more shove when you want it and a retention of your MPG go nitrous


Ralf S.

Just to point out Ralf, im not having a dig at you, mearly putting across a different side of the argument from the point of view of someone who is running a wizard of nos kit at 50hp on their 1.8L motor and making over 220bhp



If you havent used nitrous before i understand you may be dubious, all these horror stories, there all common link, USA kits. they are simply poor quality. a good kit will give you so much enjoyment. i dont think i could have a car now without nitrous, it really is something else.

Marko, do you have any pictures of your Nitrous install at all for us to take a gander at?

not at the moment but i can certainly get you some darren, just remember that the TF VVC engine looks nothing like the TS! installation would be the same tho!

ill get some pictures for you tomorrow mate

Cheers buddy!

nitrous on the road? Why? that stuff is expensive, and not universally available...

its not THAT expensive and once you have it you sharp learn where can refill for you its suprising how many places actually carry nitrous

Originally Posted by marko

its not THAT expensive and once you have it you sharp learn where can refill for you its suprising how many places actually carry nitrous

It is still ILLEGAL.....

where? not in the uk its not

its the same as any other mod - as long as your insurance know about it then its legal

Originally Posted by marko

Just to point out Ralf, im not having a dig at you, mearly putting across a different side of the argument from the point of view of someone who is running a wizard of nos kit at 50hp on their 1.8L motor and making over 220bhp

Aye!

I guess a good kit and installers who know what they're doing will eliminate a lot of the useability and risk issues.

And it's cool if you can launch nitrox without a separate switch these days (saw a button on the gearstick once).


Ralf S.

you could set it up like that still ralf but i wouldnt recommend it. the car needs to be at WOT as to put the sensors into closed loop and ensure maximum air and fuel flow. the switch is set up on the throttle body or accelerator so it only operates when your at WOT.

the nylon lines eliminate the need for purges as there such small inner bore the nitrous doesnt have a chance to turn to gas.

No2 or NO2 isn't illegal, but your insurance company wont touch you. I asked once doing the honest thing, what the difference in my premium would be for a re-map or nitrous.

that is depending on your insurance company tho, i know some will happily insure it

Originally Posted by marko

where? not in the uk its not

its the same as any other mod - as long as your insurance know about it then its legal

How much extra did it cost you mate on your insurance and how much does it cost you for a fortnights worth of nox?

How do you turn your nox on, is it a button you hold, or just a switch u switch??

Sounds cool to me!!!!!

Originally Posted by Darren156

Marko, do you have any pictures of your Nitrous install at all for us to take a gander at?

Wheres ur piccies then?

here you go mate, sorry the quality is not fantastic, also i have taped the pulsoids as they are right below the boot vents and were so obvious from outside teh car, follow the blue and red lines from the sliver fogger just before the throttel body for them... also visible is throttle activation micro switch.

Fogger and pulsoids (stealth install )
http://img.photobucket.com/albums/v4...2/Photo016.jpg

bottle in the front, 5lb
http://img.photobucket.com/albums/v4...9042008153.jpg

rolling road results comparing off and on nitrous
http://img.photobucket.com/albums/v4...2/Photo017.jpg

179.5bhp / 151ftlb off nitrous
202.4bhp / 200ftlb on nitrous

if anyone wants specific photos just shout and ill see what i can do.

Powerful enough without Nitrous! What size engine does the TF have?