Nitrous!

[Tariq]

I found a nitrous kit for my HGT. What do u guys think? Does it really give a lot of power? Do I then have to upgrade my brakes? And is it true that I can only use it above 150km/h?
Thanks

 

[KLR]

NITRO

Look, the NOS Nitrous Oxide System is used in drag racing usually.

Don't try that in street !
Well, you might use it, but then you need to refill it.

I recommend it to you, friends of mine who has it on a Fiat Uno (with a lot of add-ons in motor)

BUY IT !!!!!
THEN ADD A TURBO TO YOUR ENGINE
30 PSI !!!!!!!

THAT WOULD BE GOOD !!!!

don't forget the brakes

bye!
KLR

 

[KLR]

NITROUS (this is the complete message)

Look, the NOS Nitrous Oxide System is used in drag racing usually.

Don't try that in street !
Well, you might use it, but then you need to refill it.

I recommend it to you, friends of mine who has it on a Fiat Uno (with a lot of add-ons in motor) use it for the 1/4 mile races. It boosts a lot of power.

I don't know about the speed you say it starts, but I don't think it is at that speed
because drags are in only 400 meters, and you need a distance to reach 140 km/h. I don't know how to explain it in English, my English is not very good !!!

BUY IT !!!!!
THEN ADD A TURBO TO YOUR ENGINE
30 PSI !!!!!!!

THAT WOULD BE GOOD !!!!

don't forget the brakes

bye!
KLR

 

[Nick]

Mad

The practical limit to the amount of power a nitrous engine can generate is the speed at which you can pump the fuel in, and the temperature at which the engine melts. Other things have to be considered, like how you hold on to the steering wheel, how you keep your eyes open, and how you keep your trousers from turning brown.

Needless to say it shags your entire vehicle very quickly if you use it to its full potential, and shags it slightly less quickly if you use it sensibly. Although sensible is not a word that is normally associated with nitrous.

Other things to think about - the cost of gearboxes, the cost of clutches, the cost of removing a melted piston, the cost of that stuff they put on the back wheels of dragsters that melts the tyres to give better grip, the cost of replacing the tyres and the cost of a lobotomy!

Ask yourself the question, do I want to turn my car into a dragster? If the answer is yes, nitrous is the quickest way to do this.

 

[Nuno]

You bet you're right

I have to fully agree on this. It's by far too much for a regular engine, and remember these are engines not ready to handle high temperatures or too much effort. I have a 105 JTD as most of you probably know by now and the only thing i did to it was to get it a decent air filter, better engine oil, better tyres, new turbo pipes and a proper exhaust pipe (full set) that's hidden under the car and isn't even noticeable. All of this is enough to pass through regular JTDs and give those lame TDIs a run for their money. Isn't 200Km/h enough ? Well, for me it wasn't so i made these modifications and now it sometimes reaches 215, depending on the wind, road condition, rain, etc.

I could have put a nice chip on the engine, it would be cheaper, it would pass through all TDI cars and would put my engine with 138CV and around 310NM and maybe make it pass the 220Km/h mark, but that would be ruining it with time, and cars don't come cheap nor do their parts. The modifications i made aren't causing any problems to the engine and i got much better performance already (don't know the power/torque - it wasn't measured yet).

"Get a grip".

Nuno

 

[Steve D]

Nitrous

Look nitrous in cars is absaloutly fine why well here goes, get comfortable.

Nitrous is injected in to the cylinder head via a small jet. This jet can be altered the bigger the jet the more power. Currently these jets are available in 25bhp, 50bhp, 75bhp, 100bhp, and 150bhp. The last three power hikes are by far to much and would damage a standard engine within a few hundread miles. However most standard cars are generally capeable of running 25bhp more than they do this means the clutch, gearbox, drive shafts, manifolds, brakes and suspension are all capable of handling the extra power, (okay there are exceptions 1.0 novas etc)and most modern day performance cars can take 50 extra horse power easily (HGT's, 2.0zetecs, v6's 1.8, 1.6, 1.4 - 3.0 turbo'ed, twin turbo's and supercharged engines - the list goes on!!!). Some of the bigger engined, more refined cars can take 75bhp.

The way the system works is that the nitrous is cold and ignites quicker than fuel, therefore creates a bigger 'bang' and therefore gives you more power through your wheels.

You can have say (when you turn it on via a switch in the cabin) 25 extra bhp when you floor the accelerater on your car, or 50 bhp. Other systems allow you to have the extra power at say 75% throtle. The more advanced sysytems can increase the power gradually for example 25bhp at 30% throtle then 50bhp at 60% throtle and finaly 75bhp at 100% throtle. This delivers the power equally and there isn't a sudden MASSIVE increase in power which would obviously shag you drive shafts etc. But before you say 25bhp is to much, aturbo engine works similaly it drives noraml up untill about 3000-4000rpm and then the turbo kicks in with a bang. The nitrous turned off would be just like driving you car normally you wouldn't notice a thing, turn it on however and your in a different car - imagine you could turn your turbo on and off!

When nitrous is fitted the proffesionals will put your car on the rollers and test your car's engine in many different ways to make sure that it is 'fit/strong enough' for taking this type of power delivery system . If it isn't they would advise you what to so first before they will modify your car. If your car is fine then they will advise, which power jet to go for usaully 25bhp or 50bhp for standard motors. If you already have a flowed head, chip, cams, exghaust, filter, and strengthend engine components (manifolds etc) then they may advise the 75bhp jet.

The system is all fitted professionally and the tank for the nitrous fitted in the boot. Warning bleeps can be fitted so that if you turn the car off but the nitrous is on it will remind you to turn it off. (if you leave it on it will leak into the engine you start up in the morning and a very big bang will occur.

Yes the bigger jets will shag your car quickly (thats why top fuel cars use them on the strip) but these guys are pros and know what is best for your car.

It's common sense put a 100bhp jet in a 1200 bravo and yeah it will die quick (clutch, gearbox, manafolds etc). If you put a 50bhp jet in an HGT then fine. Your gearbox will cope as will your clutch, but again these guys may adivse you to uprate them. Your brakes will be fine but again you might want to uprate them just for youe peace of mind. This type of power gain is not dangerous and will not kill your car if it is the right car in good condition.
If i were to have it I would indeed change my brakes and suspension (not clutch or geabox) and i'd opt for a 50bhp jet with gental introduction dependant on the throtle percentage but at £1000 - £2500 for a fully installed pro kit it's a lot of money.
There are loads of advantages of having nitrous (the extra cooling of the engine being one!!!), but no doubt there will still be people that think its a crazy idea.
The explanation given is quite basic and would take me hours to type about all the types of systems available.
What do others think about it now???

 

[Nick]

Cooling?

Are you sure it improves the cooling? As I understand it, the reaction between nitrous and fuel releases more energy than fuel/air, and so there must be more heat produced, as the engines efficiency has not been altered at all. There will be more power, but there will also be a lot more heat.

The nirous might be colder when it goes in (but not necessarily), but it is much hotter when it comes out!

 

[Grant]

Sounds good

Nitrous provides more oxygen for the fuel to burn with meaning you get more power when you increase the fuel output. Hence higher fuel consumption - the same as with a turbo (depending how you drive!). My concerns for going the nitrous route are this.

1) As far as I am aware it's still currently an MOT failure in the UK (for you Tariq?)
2) You have to find room for the bottle.
3) This bottle will need constant filling up to maintain good pressure (how much vs petrol?)
4) Could be very nasty if the system starts leaking (but at least you'll be laughing)
5) Do you have to lower the compression ratio?

Personally I would spend my money on a turbo system. With different pistons you would have better scope for boosting power and reliably too. But then I've never seen the engine bay of an HGT. It could be a tight fit. Swings and roundabouts I think - nitrous sounds more impressive.

The key question is How much power are you looking for? Are you prepared/financed to strengthen your bottom end or do you just want a quick and easy method of going faster?

Regards

 

[Steve D]

Nitrous

The cost of filling a bottle is about £25. As your only injecting a little bit at a time it can last. Some people will go through a bottle in 3 days others once a week / once a fortnight. But some of these poeple are the boy racers of the world. If you flicked the switch just for over taking (a bit of extra power just to make sure - we all need it sometimes)then the bottle should last for a good few weeks but that does depend on how much over taking you do!!!

The bottle goes in the boot, some people fit a cooling fan as it reacts better when the gas is cold, as it can get warm in the boot, especially in the summer.

If you leave it onyes you might well be laughing, but like i said there are now warning systems available.

You don't ahve to lower the compression ratio, but agin internal engine mods such as this along with stregthend parts could mean you can go for bigger power jets.

Why would the system make ypur car fail the MOT, its a type of force fed induction, aturbo doesn't fail your cars MOT - i may be wrong - anybody want to en-lighten me?

Yes your right - with stonger pistons, and better cams you will add to the reliability of your cars engine.

As for the power gain
A 1600cc (on average) will produce 120bhp + 25bhp nitrous anbd you've got 145bhp thats the same as many 2000cc (the HGT is 147bhp)

Take a 2000cc (on average) 150bhp + 25bhp and you've got 175bhp that enough to shift a small car like the HGT, especially through the front wheels.

BUT... + 50bhp and you've got 200bhp - now thats turbo power, just 20 horses less than the coupe turbo!!

Like you said Grant it depends how far you want to go, but to me if Fiat had made the HGT with 175bhp in the first place it would have been a killer to all other small hot hatches.

As for the engine bay in the HGT its abloody tight fit, because of the 5th cylinder.

Cheers.

 

[Richard (with the White Van)]

Nitrous

Hi Steve D, a very interesting post but just one thing, would it be a good idea to have more light from your headlights????
Cheers,
Richard

 

[John Doe]

Who insures you guys??

Nitrous injection, 18'' wheels, superchips....bloody hell...where do you guys get your insurance? I'm all for tinkering with the car but my insurance company won't touch it if I so much as look at copy of Max Power!!

John

 

[Martin (with a white van too ;))]

You would need more light becuase you would be travelling faster !!!

No text just a stoopid comment in the title

 

[KLR]

MODIFICATIONS TO DO

Let's resume all of this:

LOOK:
17 alloys
215/40 x 17 tyres

ENGINE:
Better exhaust
chip
air filter K&N / GREEN
little modifications on engine for reliability
Turbo 1 kg (on a HGT 210 horses now)
Nitrous +50 hp (now we've got 260 horses)
More modifications (let's reach 300 horses)

SECURITY:
-40mm suspension
better brakes (like Brembo)

A FRIEND OF MINE HAS AN ESCORT WITH SIMILAR MODIFICATIONS TO THIS AND ITS ENGINE HAS 420 HP
1/4 mile in 11.7 seconds !!!