Author Topic: Nitrous 101  (Read 5125 times)

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Offline Thundercat

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Nitrous 101
« on: May 19, 2009, 11:50:51 am »
Can I run nitrous on my car?-

Nitrous can be run on pretty much any car, whether it be stock or a
fully built NA beast. If you have an older car or one with many miles
on it, you will want to run a compressi on check. The numbers for each
cylinder should be pretty close to each other and within Honda specs.
For example, if you had 240, 238, 242, and 245 on a JDM H22A then it
would be safe to run nitrous on that engine.
Secondly, aftermark et chips, ECUs, and Venom control modules that
advance the ignition timing are not safe to use with nitrous. You may
be able to use an MSD ignition timing controlle r or a Jacob's nitrous
mastermin d to retard the timing only when you are spraying, but it is
very important to follow the rules for retarding your ignition timing
when you are spraying nitrous. I will discuss these rules later in
this post.Fina lly, nitrous loves high compressi on, but the nitrous
fuel ratio has to be tuned very precisely . 100 octane fuel will make
it much easier to run high compressi on and nitrous, but it can be done
to an extent on premium pump gas and good tuning.


Dry, Single fogger, and Direct Port: What's the differenc e?-

Dry Kits-
Dry kits have a single nitrous nozzle plumbed into the intake tube
(Mount the nozzle at least 6 in. from the TB) and they only spray
nitrous into the intake. The extra fuel is provided by the injectors,
when the ECU notices the extra oxygen molecules in the intake air
charge. Dry kits can only be jetted up to a 75 shot because the
nitrous is not distribut ed evenly to each cylinder. The injectors
give an even amount of fuel to each cylinder, but because some
cylinders are getting more than others you will get a dangerous lean
condition in that cylinder. Running lean leads to predetona tion, and
predetona tion is what blows motors.

Single Fogger Kits-
A single fogger kit has one fogger nozzle mounted on the intake tube
(Also 6in. from the TB). However, both fuel and nitrous are sprayed
through this nozzle. This kit has a fuel solenoid and a nitrous
solenoid, where the dry kit has just a nitrous solenoid. The idea
behind this kit, is that spraying fuel with the nitrous will fix the
lean condition that plagues dry kits that are jetted above a 75 shot.
The problem with this is that fuel is heavier than nitrous and
therefore it won't be able to make the turn to the first cylinder
after the TB as well as the nitrous does. Honda intake manifolds are
biased towards certain cylinders, which will still give uneven nitrous
and fuel distribut ion when usinf a single fogger kit. Some people swear
by these kits, but personall y I'd rather plumb in a direct port kit for
anything higher than a 75 shot.

Direct Port Kits-
Direct port kits spray nitrous and fuel through single fogger nozzles
on each intake runner. This is the only kit that can provide perfectly
even nitrous and fuel distribut ion. This kit incorpora tes one nitrous
solenoid and one fuel solenoid, just like the Single Fogger Kit. The
only drawbacks to this kit is that it is hard to hide, and impossibl e
to hide from someone who knows alot about nitrous. Also when you want
to increase your shot, you have to change 8 jets as opposed to two on
the Single Fogger Kit. A direct port kit can be jetted to as low as a
75 shot and to high as your motor can hold (Providing your solenoids
can flow that much nitrous and fuel).

What do I need to run X shot?

First of all, you must always run premium fuel(91+ octane).

50 shot-
All that you need is a set of one step colder copper NGK plugs or
a set of Zex plugs(Two steps colder than stock) and you can keep
the ignition timing at the stock timing.

60 shot-
You need the colder plugs and you will want to retard your ignition
timing by a degree or two. You may want to look into getting an
aftermark et ignition and spark plug wires.

75 shot-
Retard your ignition timing by 3 degrees, pick up an ignition, colder
plugs, spark plug wires, and look into getting a stronger clutch
because your stock one will be slipping very badly. If you find that
you are running lean or rich pick up a fuel pressure regulator . If you
are running a direct port kit, then you can pick up an Apexi VAFC to
control your fuel map.

100+ shot-
While you can get away with running a 100 shot on a stock motor, I'm
not going to recommend it. If you plan on running any shot higher than
a 100 shot, you will need to beef up your bottom end. Forged pistons
and forged connectin g rods are the first step. I have heard that it is
necessary to resleeve the block in order to run forged pistons on
H22As. Whether you believe this or not, is up to you. I figure that if
you are going to build a block, you may as well go all out and resleeve
it as well, but that's just me. Everythin g that you need for a 75 shot
you will also need for a 100+ shot. It will also be necesarry to
upgrade your fuel pump to a 225 lph pump. Walboro, NOS, and Holley are
all good choices for fuel pumps. A preogress ive controlle r will also be
necessary to control the nitrous flow, so that you don't smoke the tires
for the first 1/8 mile. NOS, NX, TNT, and Jacob's Electroni cs all make
nice progressi ve controlle rs. 2 step colder plugs will help ward off
predetona tion, and it will be necessary to retard the timing 2 degrees
for every 50 shot.

What brand should I get?-

NOS-
NOS has been in the nitrous buisness for many years and has made a very
good name for themselve s. They produce single fogger kits, direct port
kits, and dry kits. If you need a new solenoid, a nitrous line, nozzles
,distribution blocks, etc. NOS will make a replaceme nt part.

NX-
NX is very similar to NOS. It is a good company, that makes quality
parts, and they have been around for a while now.

Zex-
Zex is the simplest dry kit that you can buy. The nitrous solenoid is
housed in a purlpe control module. This makes it an easier install,
but it also makes it so that you can't buy little individua l parts to
fix your kit, such as solenoid plungers,springs, etc. like you can
with NOS and NX.

Venom-
Venom is an expensive dry kit. It incorpora tes a computer program to
control the nitrous flow and it also uses a program to watch your AF
ratio, so that you don't run lean. The reason that I don't like Venom,
is that you can only jet a dry kit up to a 75 shot, so you you don't
put down enough power to have any really big traction issues. Basically
,the computeri zed nitrous flow controls are unnecessa ry. Secondly, a
fuel pressure safety switch from NOS and some dyno time will provide
just as much insurance that you won't run lean as the Venom kit, and
it will do it for cheaper.
~CREW LEGIT~JJ AUTOWERKS
~IMPORTALLIANCE.ORG~All IN FAB~BISIMOTO~

Offline Scotsman

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Re: Nitrous 101
« Reply #1 on: May 22, 2009, 03:45:03 pm »
what would a 50 shot do to an 05 2.2l with 90xxx miles , i mean what kind of gains?

Offline slovic

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Re: Nitrous 101
« Reply #2 on: May 22, 2009, 05:58:08 pm »
what would a 50 shot do to an 05 2.2l with 90xxx miles , i mean what kind of gains?

im guessing somewhere around 50  ::)

Offline Thundercat

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Re: Nitrous 101
« Reply #3 on: May 22, 2009, 07:29:00 pm »
naww..aro und 30 whp
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Offline Scotsman

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Re: Nitrous 101
« Reply #4 on: May 22, 2009, 10:17:28 pm »
naww..around 30 whp
how hard would it be to install and how safe would it be on my motor?

Offline Thundercat

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Re: Nitrous 101
« Reply #5 on: May 23, 2009, 12:37:29 am »
the install isnt' too bad ...just make sure you have all your parts.... .what motor is that 2.2 "05"?
for the most part any motor will and can take it..BUT i wouldn't get all crazy ..natural ly if the motor is built it will hold up better and last longer..

let just take my 04 sentra for ex.  if i spray'd a 50 shot on it and was conservat ive.(once every week for 2 months) i would more then likely be replacing something on my motor(which is at 93xxx) within the next 5-9,000 miles but thats just a guesstame nt
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Re: Nitrous 101
« Reply #6 on: May 23, 2009, 01:05:55 am »
2.2l ecotec

Offline Thundercat

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Re: Nitrous 101
« Reply #7 on: May 23, 2009, 01:21:31 am »
you will be fine with a wet kit ....here's some info i found on your motor


you will be more than fine at 55 shot, we have ran 80 shot dry with no air fuel issues, the car can compensat e up to 80. but short burns like auto 1st and 2nd gear. we have set to start injection at 2700 to red line on my saturn ions both autos though witch preform better cause never have to let off no2 till end of second, with a 60 shot dry you will run fine, or less, these cars factory pump can ramp very fast!! and i have no issues with the car, now over 60000 and had no2 since 2 weeks i got them. just get a good air fuel gauge and keep eye on ration around 5000 to 5800 for some reason like a dead spot on all the cars i have tested. and if you have manual trans. do your engine favor and use full throttle switch!! or it will go boom!! no matter how fast you shift you fuel cut off is right up there where you will be shifting, and i think you get the idea ( no fuel )!!! BOOM. anyway have fun with it but don't burn before 2700 or longer than 2nd on autos or 3rd on manual, and on manual, don't burn first you will not go!! no2 is great for trq!!, good luck
~CREW LEGIT~JJ AUTOWERKS
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Re: Nitrous 101
« Reply #8 on: May 23, 2009, 01:25:25 am »
sweet , i have a saturn vue auto , just lookin for a lil more umph before i superchar ge it

Offline Thundercat

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Re: Nitrous 101
« Reply #9 on: May 23, 2009, 01:33:50 am »
ya man ..do it up ...keep us updated
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Re: Nitrous 101
« Reply #10 on: May 23, 2009, 01:36:56 am »
ya man ..do it up ...keep us updated
is it something i could do at home? i am very hands on and have done atleast a dozen ef/eg swaps(so i know my way around the engine bay) and what is it ball park price wise?

Offline Thundercat

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Re: Nitrous 101
« Reply #11 on: May 24, 2009, 06:35:32 pm »
most def. something you can do at home..loo k to spend around 300 at least. anything less is a fairly good to great deal....t ry and buy a kit as complete as possible since its your first time
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Re: Nitrous 101
« Reply #12 on: May 26, 2009, 08:01:08 pm »
will it be safe to keep it after i SC it?

Offline Thundercat

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Re: Nitrous 101
« Reply #13 on: May 27, 2009, 02:02:43 am »
yea just use smaller jets for a smaller shot..you don't want to push your motor
~CREW LEGIT~JJ AUTOWERKS
~IMPORTALLIANCE.ORG~All IN FAB~BISIMOTO~

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Re: Nitrous 101
« Reply #14 on: May 30, 2009, 09:55:17 am »
yea just use smaller jets for a smaller shot..you don't want to push your motor
sweet , a million thanx for the info


 

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