View Full Version : Nitrous?
Does anyone know if its ok to fit nitrous to a chipped leon?, will a small amount of nitrous injected into the manifold kill the engine on a turbo?, i already have a tapped injection point after the throttle butterfly left over from my failed lpg conversion and saw this kit below and after watching the fast and the furious it has got me thinking!!, it seemsa really cheap system too
http://www.overboost.com/obs/product.asp?pid=20278
Go to the vwvortex forums, lots of info regarding to 1.8T "nitroing".
http://forums.vwvortex.com/zeroforum?id=27
neil1williams
20-08-2002, 23:46
had a mate do it, to a two year old nissa almera 1.5 with 30,000mls and it blew up after a week!!!!!!!.
Don't know why! they say NOS works better if it's injected as direct port>
I think it's pretty safe as long as you use a wet system, ie extra fuel is injected at the same time as the nitrous. I think by doing it this way the fueling/ecu map can be left alone without danger of running lean. I think a lean situation is really the only way that a nitrous install can 'blow up' the engine.
Someone asked me about fitting NOS to an 80's Audi Quatro (SP?). I asked Daz (Complete Car Care, Tel: (01733 333 164)). He explained that NOS can counter act the effects of forced induction.
Basically, a turbo increases air volume, thus add fuel, and with a few other tricks to keep everything in control, you get lots of extra power. It's actually quite complicated, but you get the gist.
The same kind of thing is going on with NOS. It's a Nitrogen/Oxygen mix. This is injected into the inlet manifold (or can be injected directly), but it only allows you to burn extra fuel, it's not fuel in itself. Thus as explained earlier in this thread, a dry (NOS only) system is liable to completely bo***x your engine. A wet (NOS and fuel) system gives you the fuel and the extra oxygen to burn it.
The turbo is already giving you this ability. To get even more, you'd need a very well controlled NOS system, and direct port injection, and this means head modifications and all sorts of other tricks. It's possible, but I personally wouldn't go there. Give Daz a call and ask him. He's done all the research; getting back to the Audi, he said increase the boost. It's easier.
I'd suggest that if you really want more power, invest money in modifying or replacing the turbo, making sure you have adequate cooling (maybe via water-cooled injection to the intercooler array), bigger fuel injectors, and then a complete re-map of your ECU to control the whole thing. For more advice, I'd suggest giving Richardsons a call because they've been there and done it before, but I'd go down this route and avoid NOS if I were you.
Cheers,
Nitrous does have the effect of cooling the inlet charge as well. There are plenty of people in the states with 1.8t's that are using nitrous succesfully without any extremely complex controllers. I also know of at least one person with a TT 225 that is currently running about 350 bhp using nitrous.
Ian,
Why don’t you just have done with it and strap a second hand MIG jet engine to the roof :idea: :rolleyes:
Cheers all, wet nitrous sounds a bit like too much effort for me, i was hoping to be able to just inject nitrous but this sounds dangerous for the engine now, i thought that nitrous was fuel and additional air too but it looks like its not if wet systems are used,
I was just looking for a bit of fun with my car before i loose my job and the car (company car)!!
Ian
Any luck with new job/car yet?
I am trying to setup my own online business selling digital cameras, but its giving me no end of problems with needing separate secure servers for credit card processing and non secure web site space, and i made the mistake of using Barclays EPDQ online credit card processing software that isnt supported by any of the online shopping cart softwares!!, now looking at using worldpay instead though,
If this doesnt work or doesnt generate enoughtincome i already have another job lined up similar to my own job so wont be without a job or income but it doesnt offer a Leon company car (astra vans instead :sick: )
So i am just going to see what happens really!, it is estimated that i will lose my job a week after the track day at the moment!
Might look a bit suspicious with a jet engine on the top of the car BTW !!, and i recon i would be down to about 2mpg if i did too!
Originally posted by dreamer
Nitrous does have the effect of cooling the inlet charge as well. There are plenty of people in the states with 1.8t's that are using nitrous succesfully without any extremely complex controllers. I also know of at least one person with a TT 225 that is currently running about 350 bhp using nitrous.
Yeah, I expect so. The controllers really aren't that complex. They're just switching one hell of a solanoid on and off, controlling between 600 and 1300 psi of pressure (if I remember right)! That's of course what's coming out of the bottle and bears no relation at all to turbo boost pressure. The only other thing controllers do is allow you to run different percentages of NOS, and also to delay and increase the NOS pressure as you want. But I don't know too much about this stuff. I'm just getting into it because Daz (see my message above) is fitting 100 BHP NOS to his MX5. It's already got 50 BHP, and that turns the thing into an animal!
The other thing is, I'm not sure that you'd notice huge differences with a chipped 1.8vt engine. You'd have to ask the experts or someone who's had it done, and then how much time and money it took to do. Up to about 100 BHP though, it's quite safe (so I am told; don't blame me if you over-use your NOS, neglect it, or use too much in low gears, etc) but it is for short bursts really.
One more thing to consider: It's alright going half way round the country having a NOS install put in, but you also need to refill the bottle. You need to check out if anywhere locally to you will do this, whether they keep it in stock (i.e. in massive bottles), and how much it costs.
Otherwise, it's real fun!
Originally posted by Mosser
and i recon i would be down to about 2mpg if i did too!
Try 2 gallons to the mile! That's usually the way they measure fuel consumption for jet engines! Gives me a heart attack just thinking about it! :D
Originally posted by Mosser
online business selling digital cameras
10% discount for seatcupra.net members I trust? :D
Best of luck, a least you have alternative employment whilst you set the business up
There will certainly be a discount for SeatCupra memebers!, i am aiming to undercup pretty much all online sellers and try to sell in volume to make any money at it so there probably wont be enough profit margin for 10% though!!, but i will see what i can do !
Let's see,
when the MD-82 starts it's take-off roll, it consumes a grand total of about 8000 kilograms of fuel per hour.:D
When in cruise it consumes 3200 kilograms per hour. Or about 3200 kilograms every 890 km's.
That's 553 miles per 3200 kilo's.
Given that 1 US gallon of Jetfuel weight 6.6016 pounds, it gives me a figure of:
553miles per 1068 Gallons of jetfuel, which is:
0.51 miles per gallon. (of jetfuel)
So Chester, I really admire your guessing skills :D :D :D
Cheers,
Xander
ibizacupra
22-08-2002, 10:59
Originally posted by MD-82
Let's see,
when the MD-82 starts it's take-off roll, it consumes a grand total of about 8000 kilograms of fuel per hour.:D
When in cruise it consumes 3200 kilograms per hour. Or about 3200 kilograms every 890 km's.
That's 553 miles per 3200 kilo's.
Given that 1 US gallon of Jetfuel weight 6.6016 pounds, it gives me a figure of:
553miles per 1068 Gallons of jetfuel, which is:
0.51 miles per gallon. (of jetfuel)
So Chester, I really admire your guessing skills :D :D :D
Cheers,
Xander
Blimey..
I'm impressed with both of ya. :)
Bill
Bill this would mean that you would be able to do approx 7 miles to the tank (once its going). lest call it 6. Thats 3 laps per tank!
How would the speed advantage weigh up against the refueling times?
Originally posted by MD-82
Let's see...
553miles per 1068 Gallons of jetfuel, which is:
0.51 miles per gallon. (of jetfuel)
So Chester, I really admire your guessing skills :D :D :D
Cheers,
Xander
Wow! I didn't even think it would be close, but I knew that these things do like a drink!
More NOS Considerations
Do you have a catalytic converter still installed? The cat could be too restrictive when using nitrous. Daz explains that when you put more gases into an engine, a proportionate amount has to come out, through the exhaust system. If the catalytic converter will only allow free flowing gases up to say 190 horsepower, any additional flow through the exhaust will be restricted by the bore of the cat. Therefore, in removing the cat and using a cat replacement pipe, you remove the restriction.
Now how much the cat will restrict your car depends on your cat. The only way you'll really know is to try the replacement pipe method. This should cost about £50.
Hope this info helps.
ibizacupra
22-08-2002, 12:29
Originally posted by smithrc
Bill this would mean that you would be able to do approx 7 miles to the tank (once its going). lest call it 6. Thats 3 laps per tank!
How would the speed advantage weigh up against the refueling times?
Hmmm.
I think the Ferrari pit crew would struggle to refuel it that often. LOL
regards
Bill