NITROUS OXIDE ( nos / n2o ) advice forum

hi,

been lurking for a while now so i thought i would join.


right i have been reading trevors book and reading a lot of posts on here to get some idea's....

i have a 2002 mini cooper s that at the moment has just over 200 WHP it has a smaller pulley and a chargecooler and there's more.....I have been looking at nitrous and also water injection mainly for the cooling effect that they have..... but the problem i have with nitrous is that under the bonnet of the mini gets very hot due to the supercharger, after reading the TECHNICAL section on the home page it says about keeping nitrous cool.

Keeping Nitrous Cool
VERY IMPORTANT!!! I can't stress enough on how important it is to keep the nitrous in liquid form as long as possible. This denser form is where maximum power comes from.

Tips:
1) Keep supply line from bottle/bottles to nitrous solenoid as short as possible. Excess length just promotes vaporization.
what do you class as short?
2) Route the nitrous supply line along the coolest possible path. Under car exhaust heat can start premature vaporization even when not next to the exhaust. A benefit of nylon routed inside if applicable.

3) Mount the solenoids in the coolest spot under the hood, while trying to maintain shortest output line length to injector/injectors. The back of the motor/firewall is the worst place to mount as all the engine heat is blown there when driving.
there is no cold spots under the bonnet

4) Protect lines from heat. See product section for recommended heat wrap.


Note: These are just tips. Sometimes line routing and solenoid mounting have to be done in a less than ideal location for a given application. Take some extra time to find the best possible placement for nitrous parts as you will only benefit.

also i can't go direct port as there is no room.

cheers dave

would i be better injecting before or after the intercooler

also not sure what else i would need ie TPS.

so really looking for a system to suit the mini.

i know going nitrous will be more expensive, but it would be worth it with having the extra power on tap.

hope this make's some sense.


dave

First of all taking the nitrous route should be cheaper HP than any alternative you have and not only that but it will be safer, especially on a blower engine.

HEAT is not a clear cut issue;

1) Heat is fine at the bottle end but is to be avoid between the bottle and the injector.

2) All heat can't be avoided on any vehicle so its a matter of making the best job you can and adding insulation would certainly help.

Pipe length is also an issue that is not clear cut, because in most application they are to some degree at least dictated by the design of the vehicle.
Luckily for you, your vehicle is shorter than most and will therefore benefit from a shorter supply pipe than most.

Injection should be AFTER the intercooler and a single injector is exactly right for your application, therefore our Street-Blaster 150i will be perfect for your purpose;
http://www.noswizard.com/product_desc.php?id=59

If you'd like a vehicle specific quote please complete our contacts page.

THANK YOU for taking your time to answer my post.......

will be in touch.

dave

My pleasure.

By coincidence I have a potential customer in the US with the same car and he's asked me if I know of any 'conventional' tuning component suppliers, so I was wondering if you knew who was best on these motors on things like ECU upgrades etc?

Many thanks

tell him to have a look on here....
http://www.northamericanmotoring.com/forums/index.php
and for ECU tuning mynes tuning there are in the states, they are very good
http://www.minitorque.com/forum/f643/

also there is M7.
http://www.m7tuning.com/home.html
http://www.thumperheads.com/
hope these help.

dave

Many thanks for those Dave.

just been asked this question.

Does a 25hp jet on a boosted car = more due to the cooling effect nos has?



cheers dave

Yes and in some cases we've seen as much as FOUR TIMES the amount at the engine.

The disproportionate increase then tends to diminish as you increase the jet sizes but you should always see more out than the jet size theoretical capability.

Here's a good one that I've just thought appropriate to add;

A customer phoned to say he was disappointed by the results from his nitrous system, so I asked what increase he'd got. He replied "only 30 HP" to which I replied "that's an AWESOME result from 25 HP jets, so I don't know why are you disappointed?" - he replied with "The kit is capable of 150 HP so I was expecting more".

Obviously I went on to point out that the system is limited by the jets that are fitted and that they are replaceable, so all he needed to do to get more was fit bigger jets. I then pointed out that for 25 to make 30 on a NA engine was extremely unusual, so he should be happy, which is when he told me it had a turbo. It then transpired that the 30 gain was despite being overly rich, so I predicted much better results when the mixture was optimised.

He's since fitted 75 HP jets and reduced his 1/4 times by almost a second and run low 12s.

Thanks for that it was a great help.


i picked the rest of my kit up today....thank you very much....... also you have a great set of lads there.... they was very helpful.

will be back soon once the kit is finished.



Cheers Dave

Glad to be of assistance just as my team would be and thanks for the appreciation of that.

sorry to be a pain trev.


but after a schrader adapter for my fuel line......had the T adapter but dont want to realy cut the fuel line.....had a look at the cap and its 10mm so i think its an 11mmm thread.....does that make sense.
and you do 3 sizes.

it will also save on having fuel line run from one side of the engine to the other....i will only have 8 inch of fuel line to the solenoid.


cheers dave

No problem we can exchange the T for the adaptor that fits the fuel rail. I expect it to be the same size as the caps for your tyre valves but it would help if you checked and confirmed that.

just trying to figure out where to mount the crossfire on the inlet.



would it be ok going in where the first here is( but it would be pointing down.)

but in the other place it is very limted for room, as the intercooler sits there.

this is the best i have at the mo.



the one in the photo has now had the bracket cut off.


cheers dave

Do you have a picture of this inlet trunk in situ in the engine bay?

X 2

sorry should have posted a picture of the engine.....



cheers dave

In that case "or here" would be best.

BTW I assume that's the outlet from the inter cooler?

The 'or here' position looks like it will be tight to get in the height of the crossfire plus the inch or so radius you need (ideally gentler radius than that) to bring the pipes away, but it's hard to tell from the pic. Maybe one crossfire either side on the upright wall of the trunk at thats ection rather than a single one on top?

I don't think pointing down would be a problem but await expert comment!

yes that is the outlet from the inter cooler.

i wil try and get a better picture tomorrow from the front and the side.

thanks for all your help.

dave

2 crossfire's would certainly result in better distribution Lawson.

right had a look today at where the best is.



gone with (or here)...... i have about 2" in hight for the pipes.




after fitting it iread the manual and just moved the crossfire slightly.



hope this is right.


cheers dave

Looks like it should be fine there, just try turning it in or out by 30 degree's to cause the nitrous discharge to spiral round the intake a little.

will do thanks.

just needs the inlet powder coating then it will get fitted.

once again thank you.


dave