N2O is causing temporary loss of motor control..

[BobDoLe]

.. and here I am at Harris Speed Works looking at HSW-SI1-D-LSX...

This is advertised as a single nozzle dry kit, fully adjustable from 50-120 shot.
HOWEVER... it is intended for the LS1, LS2, LS6, LS7 motors.
What does that mean for L36 use?
Does the 50 shot then really translate into a 30hp increase or something? My limited understanding leads me to think that a 50 shot jet is a piece with a 0.05 hole. Given a standard bottle pressure of 900-1100 PSI and the bottle flowing for 5 seconds, the same amount of N2O should flow into any size motor. If this is the case, why would the same amount of N20 passed through a 0.05 hole give 50hp on both a 5.7L V8 and a 3.8L V6?

I'm really tempted to buy the Harris Speed Works kit. I think lilchubby has done a great job of promoting their product. The price is the real hook. Other than product recognition (and associated research and development), is there some reason I should spend more on a ZEX, NOS, or NX kit?

Anyone want to talk me out of this (please) ?
How common is fuel pump failure on a dry nitrous setup (50-75 shot) for our cars?
How common is solenoid failure?
This Harris Speed Works kit uses a PowerMax 2 Port N2O Solenoid. Any word on Power max solenoids?

Thank you in advance!!!

[teal99camaro]

Re: N2O is causing temporary loss of motor control..

A nitrous shot describes how many horsepower you will get. The shots are the same no matter which motor you use. but done expect to get the full hp advertised on a dry setup. Unless you do some heavy air fuel ratio tuning and enrich the fuel, you wont get the full 75 hp of the shot. A wet shot maxes it for you.

I've been running a 75 dry shot for about 6 months with zero problems. I went from a 15.2 to a 14.3 so i'm not getting the full HP, but I'll convert it to a wet shot first. Be sure to use all the precautions like a window switch, wot switch etc, you dont need a bottle heater but the shot will be more efficient if you get one. Dont shoot over a 75 shot on a stock fuel pump, upgrade that first and do injectors with anything over a 100 shot.

[pumm3l]

Re: N2O is causing temporary loss of motor control..

A nitrous shot describes how many horsepower you will get. The shots are the same no matter which motor you use.

Yup, the basic functionality of a kit works the same on any engine, the jets are what determine the shot size not the actual kit, different model kits come with extra components to make the install easier that's why you see it list out different motors.

[lilchubby]

Re: N2O is causing temporary loss of motor control..

i think bob has a point here, even though i could be way off. i would think that jets specificly made for the lsx setup , being a v8, would be diffrent then what jet sizes u would see with the same kit for a v6. thats why they have all these diffrent jetting sizes. before harrisspeedworks changed around they had a v6 and a v8 kit. why would they advertise them diffrent if their was inded no changes. the only thing i desagree with is that i think u would get more then the shot says. its seems to me that they would have to give more nitrous to a bigger engine, theirfore that would translate to a bigger shot for the smaller engine. now i could be totally off base on this and it make no sense at all, but thats just my opion. maybe i can put that to rest with some dyno runs im hoping to make soon.
now as for the harris kit, i belive it is second to none. any questions i had they were every quick to anwser, customer service is awsome, i have had not the first problem with the kit. i have ran close to 8 bottles through the system, using both the purge and n20 solenoilds extensivley. beaisclly it just comes down to if u want the "name" of NOS, or ZEX. but for the money i dont see anything that even comes close to comparing. just my .02 though, to each their own.

[pumm3l]

Re: N2O is causing temporary loss of motor control..

well just to give you an idea about the jets heres some specs from NX's website with their wet kit.

GM 3.8L 75hp 41/22
GM 5.7L 75hp 41/22
Ford 4.6L 75hp 41/24

First number is the nitrous jet, 2nd is the fuel jet. obviously the fuel jet is gonna be different on different cars because fuel pressure differs from car to car but as you can see the nitrous jet is the same for all 3 motors.

[Shodown]

Re: N2O is causing temporary loss of motor control..

well just to give you an idea about the jets heres some specs from NX's website with their wet kit.

GM 3.8L 75hp 41/22
GM 5.7L 75hp 41/22
Ford 4.6L 75hp 41/24

First number is the nitrous jet, 2nd is the fuel jet. obviously the fuel jet is gonna be different on different cars because fuel pressure differs from car to car but as you can see the nitrous jet is the same for all 3 motors.

It also depends on how the hp is being measured, at the wheels or at the crank. NX measures at the wheels and NOS (most other companies as well) measure at the crank. So jet sizes will differ depending on how hp is being measured. I dont think one measureement is better than the other, but it just needs to be put into perspective when looking at jet sizes.

Just thought I would throw that out there just to lighten any confusion later on cuz my wet shot jet sizes (NOS) are WAY different than the equal hp jet sizes from NX since NOS measures at the crank, not the wheels.

[teal99camaro]

Re: N2O is causing temporary loss of motor control..

think of it this way, if there are more cylinders that means less nitrous is going to each cylinder. So it still makes the same HP because its proportional. In theory a v8 should be able to take a bigger shot than a v6.

[BobDoLe]

Re: N2O is causing temporary loss of motor control..

I contacted Harris Speed Works using their web ticket system.
Their response regarding the application on our 3800 engines;

"As long as the MAF sensor is fast enough for to add the additional fuel it would
work. I\'m not very fililar with the V6 Camaros, sorry. The wet kit would work
with out a doubt. "

This makes me consider running a wet kit but I do not want to risk pooling in the intake manifold.

Has anyone had any problems running rich/lean on a dry 75 shot on a stock system (I consider cold air intake + TR6 plugs + muffler to be stock)?

[lilchubby]

Re: N2O is causing temporary loss of motor control..

i dont think their has hardly ever been a problem with fueling until u get over a 75 shot. i personally just installed the 100 shot and am still on the stock fuel system. i have the air fuel ratio guage and am showing to still be in the stoick to rich area. it all just depends on the car though. i dont think u would have any trouble up to a 75 shot though. the bad part about a wet shot is the turning, i had a wet shot an a grand prix and could never get it right. just to give u the heads up, once u spray that 75 and get use to it, ull be dieing to know what that 100 shot feels like. hope this helps though, forrest.

[Shodown]

Re: N2O is causing temporary loss of motor control..

This makes me consider running a wet kit but I do not want to risk pooling in the intake manifold.

Has anyone had any problems running rich/lean on a dry 75 shot on a stock system (I consider cold air intake + TR6 plugs + muffler to be stock)?

From my experience, I ran EXTREMELY lean on a 75 dry shot which is why I converted to wet and havent had problems since. Every car is different though. But I will tell you this, my wet system hits HELLA harder than the dry and I havent had one instance of backfire or puddling in the intake yet.

As far as tuning goes, the best tuner in the region did my car and he could not get the A/F right or even close enough to run the dry shot because it was so lean. On the wet shot, he did it in about one hour and it runs 12.7:1 all the way thru the rev range. Yeah, its a tad rich but when it gets colder it will lean out a little to even it out.

Moral of the story...my wet kit runs a lot better with less tuning than the previous dry kit. Just my .02 :)

lilchubby is right too, the 75 will get old quick and you will want the 100 shot before ya know it ;)

[Shodown]

Re: N2O is causing temporary loss of motor control..

:twak: :twak: Bad chubby, bad!! You are risking major damage with stock fuel system on 100 shot bro. Just giving you a heads up cuz I dont want to see you blow somethin up.

[lilchubby]

Re: N2O is causing temporary loss of motor control..

i know, i know...........im workin on the fuel pump, just couldnt stand stayin at 75 anymore.

my point about the dry was this. technically u shouldnt have any tuning with a dry shot. spraying it across the maf is suppose to "tune" itself. but every car is diffrent, ive ran alittle rich the whole time ive ran nitrous, and still even so with the 100 shot, maybe mines just a freak though?

[BobDoLe]

Re: N2O is causing temporary loss of motor control..

Harris Speed Works informed me that they rate HP increase at the crank, however, the RWHP increase is pretty close or off by just a few horses.

Another question:

I'm guessing you are using TR6 plugs.
Off the gas, what effect do you notice from using the colder plugs?

[Shodown]

Re: N2O is causing temporary loss of motor control..

Yes, TR6's gapped at .035. I didnt notice any difference with the colder plugs though.

[BobDoLe]

Re: N2O is causing temporary loss of motor control..

damn you all... you were supposed to talk me out of it!

I ended up buying the dry kit. I'm going to install it when I throw in my cold plugs next week some time.

I paid less than $301 including shipping because I bought it on one of their eBay auctions. I'll make it a point to post to this thread if I end up blowing my motor to bits.

Thank you for your help :)