Safety factor of Nitrous, on the VH45DE

[DAEDALUS]

The air is flowing in from one end, supplying all the cylinders. N2O supplants some of the air, not all of it. You place a supply in the center of the plenum and it's almost guaranteed you won't get an even distribution across the 8 cylinders.

[elwesso]

So basically, your saying you like the location that its in..... I would that think that if JWT recommends it there, thats PROBABLY the best place... not to say to anyone that a good design cant be improved! But HD suggested that we maybe look into relocating the jet somewhere down the road...

I suppose the only way to get even distribution would be to have 8 jets equally placed and spaced from the intake valve (since runner length varies), and that would be a lot of work.....

[PalmerWMD]

Wes, there is such as system and its called Nitrous express,

Spendy tho.Hal has it on his Maxima.

Fred..

[PoorManQ45]

I would that think that if JWT(Infiniti) recommends it there, thats PROBABLY the best place... not to say to anyone that a good design cant be improved!

You guys all read that, right? It came directly from Wes' mouth/fingers.

Don't "nit pick" the system that you have. I don't think there should be that much of a HP/TQ difference between cylinders.

[elwesso]

Jason.....

Did you get anything from Rex... I called him thrice and I only got voicemail.....

[HeavyDuty]

Why many spray into air box to let MAF add what it can...........my point was if the nitrous doesn't mix well the MAF might see -70F -130F and crack the sensor. In Front of oem air filter might be safer. On a humid cool day you might get ICE.

If I understand him correctly, Dennis states that spraying into the air box is your best chance for equal dispersion, as well as assistance from the MAF reading colder temps & adding slightly more fuel for denser air based on it's temp readings. (good)

The ICE comment refers to a subtle warning of solids potentially being ingested through the throttle body. (Ice doesn't compress any better than water.)

The air is flowing in from one end, supplying all the cylinders. N2O supplants some of the air, not all of it. You place a supply in the center of the plenum and it's almost guaranteed you won't get an even distribution across the 8 cylinders.

Plenum being the dead center of the spider's body, a better chance than you'd have any other way. In other words, you best chance at that range is still not a viable location, needless to say you're not even at the center of the plenum, you're diagonal from #8 cylinder.

I think I misread DAEDALUS's post at first too.

Try this;

Detach the fogger nozzle from your throttle body, hold it in your hand, and with a full bottle, arm the system & have a friend fire it.

Notice the force exerted to hold the line in your hand, as well as how far the atomized mist sprays away from you.

Look at your throttle body & draw a mental line perpendicular to the nozzle placement at the throttle body.

Which runner is most likely to receive the Lion's share of the charge?

The killer setup, IMHO, would be a V8 distribution block with direct port plumbed into the upper manifold runners, controlled by a pulsed, time based secondary solenoid.

The plumbing wouldn't be hard to do, depends on how precise you want the system.

Does that make any sense?

DAEDAULS, Dennis, please corect me if I misinterpreted your posts.

Wes, he *will* call you when he can, he's expecting your call.

[PoorManQ45]

If I understand him correctly, Dennis states that spraying into the air box is your best chance for equal dispersion, as well as assistance from the MAF reading colder temps & adding slightly more fuel for denser air based on it's temp readings. (good)

Would there be a decrease in HP or TQ from the N2O shot if you spray into the Air box? I mean, isn't there a point at which the "nozzle" is too far away from the TB?

[psychic_mechanic]

No, Nitrous is a physical gas that will not puddle or condense on surfaces such as atomized fuel will.

You would not want to spray fuel close to the airbox side of the intake because it will turn back into a liquid. Liquid gas burns and atomized gas explodes. More explosion = more power.

[Q45tech]

Runner lengths are precisely equal, measure them, don't be confused by the top part.

The time delay for the air to get from MAF to/passed the injectors varies with the rpm and volumetric efficiency.

The air gulp gets faster and faster as the rpm rise since the valves are only open 248 degrees ...............how many milliseconds is that at what rpm.

The farther the nitrous is from the valve the more the fuel injection change delay must be to avoid running rich rich rich till the nitrous arrives.

How many milliseconds after you command the nitrous solenoid to open does it take till nitrous first [and more important fully arrives in the cylinder] would you think 3-6 revolutions maybe 20...........0.2-0.4 seconds to stablize so power is down from excess fuel till nitrous fully reacts. Each 18 " extra from throttle body is around 15 milliseconds later insignificant compared to solenoid and flow to jet delay.

[HeavyDuty]

Would there be a decrease in HP or TQ from the N2O shot if you spray into the Air box? I mean, isn't there a point at which the "nozzle" is too far away from the TB?

Good question. IMHO, possibly. I've not mounted a nozzle in an air box, but if it were to afford me better dispersion & a less violent introduction, I would consider trying it.

You might gain a little more since otherwise some would be lean & others rich.

[elwesso]

Well boys, I got of the telephone with Dr. Rex... Rex is a very nice guy, but it looks like he didnt really do anything with the car... Meaning that he said what he wanted, and all the really technical stuff was handled by others... SO i need to talk to JWT..... Ben at JWT, so he said..... He also said something about Pat at level 10, since my transmission isnt shifting as crisp as i think it should.....

(I am writing this down so I remember for later reference)

Unfortunately he didnt remember a ton about the car... so Im not really that much more advanced about the car.. Basically all the tech questions need to be asked at JWT... IT appears none of the wet setup is still there, and he made no ECU changes with the wet... The wet system in essence worked seperately of the dry setup... Still trying to figure out why it purges.. Hopefully JWT worked iwth the car with the wet setup.. Apparently he said that Ben at JWT worked on the car a lot and would know exactly all the crap on it.....

We are still working on figuring out what this mysterios blue switch does in the center console...... rex had no memory of this at all... HE also thought too the timing was messed up, so I need to take HDs advice and properly advance it (jump the TPS wire)..

Rex is a very nice guy and he knows a ton about the Qs... I also asked him about the B.A.D. SC- Q... He still has it, and eventually we are going to send it back to Thomas Knight to replicate the manifold..... I had a TON more questions to ask him and Im working on making a list.

So basically I gotta get a hold of JWT, and talk to them about it... I am almost more confused about this whole setup, and I just need to get to the bottom and figure out exactly what needs to happen.....

Im thinking Im going to leave the nozzle where it is.. I figure, as i said earlier, if JWT thought it was best to put it where it is, im gonna stick with that.....

[elwesso]

Bump.....

I did a little searching around on the car today... Into why the system purges..

I looked at the kickdown switch and there has been no tampering to that... Alos, I unplugged it in case maybe they did that.... It still does it..

Also, when I move the throttle all the way up, it will engage... Thus, there is SOMETHING that looks at TPS voltage and fires it at WOT... Im not sure where any switch would be, esepcially one dealing with the TPS... The harness around there looks untouched... THe whole wiring harness looks pretty much untouched as well.....

Thus, i conclude that maybe something is wrong with my ECU..... ?

[si]

Well just sure this doesnt happen to your car! http://www.ozdragbike.com/engi...t.htm

[smokeyT]

thats just a shame...

[HeavyDuty]

Wes,

I'm going to test mine for you just to see what it does, maybe Sunday?

[elwesso]

HD.. Maybe just give me a jingle sometime... Starting basicsally rihgt now im gonna be in the car, so wouldnt mind talkin

[drftard]

seems this post is pretty much dead & old but my Q came with a license plate displaying VH45DEN i understand the 1st parts since its the engine name... im pretty sure... and the N im scared is for what most people would assume thats why i have stumbled upon this thread... most of the people posting here already know alot about it & i have no idea... the reason im asking is b/c it seems my car has been owned by a person on this forum in the past & so i'm wondering if my car has been acting up is it due to the extensive miles (230k) & mods i don't understand (ecu from NICO) or maybe the NoS that has been used on the car... thanks... a reply would be much appreciated...

[chinaonnitrous]

seems this post is pretty much dead & old but my Q came with a license plate displaying VH45DEN i understand the 1st parts since its the engine name... im pretty sure... and the N im scared is for what most people would assume thats why i have stumbled upon this thread... most of the people posting here already know alot about it & i have no idea... the reason im asking is b/c it seems my car has been owned by a person on this forum in the past & so i'm wondering if my car has been acting up is it due to the extensive miles (230k) & mods i don't understand (ecu from NICO) or maybe the NoS that has been used on the car... thanks... a reply would be much appreciated...

seems this post is pretty much dead & old but my Q came with a license plate displaying VH45DEN i understand the 1st parts since its the engine name... im pretty sure... and the N im scared is for what most people would assume thats why i have stumbled upon this thread... most of the people posting here already know alot about it & i have no idea... the reason im asking is b/c it seems my car has been owned by a person on this forum in the past & so i'm wondering if my car has been acting up is it due to the extensive miles (230k) & mods i don't understand (ecu from NICO) or maybe the NoS that has been used on the car... thanks... a reply would be much appreciated...

HAHAH, yo! I've replied to almost all of your posts.

No the car hasn't seen nitrous. It almost did, and for sure its capable. I took great care of that car after jesda had it. Not sure about the person inbetween us. But I never fed it the bottle.

The NICO ecu is more than well executed in this forum. Great results and better tune. Nothing to fear there.

The car was bone stock when I reccived it from Jesda, it just had CRAZY maintenance done.

[drftard]

whoa!!! seems you pretty much have! lolZ! damn... i was scared for a bit! haha wes said a nitrous kit had come with his car so thats why i was all up on this thread searching! good thing...

so great to hear that you've taken care of the president before H... talked with him i believe he had some fun with it around the area before I got my hands on it but the brakes were a bit gone... I had to get the rear rotors replaced, but i slapped on some hawk pads so im DANDY! hopefully can get some crazy brake set-up in the front w/ some endless pads!

but yeah... in the past other pages i asked you, but hopefully you can tell me what you've done to the car matience wise + added with the pwr steering lines & with modifications... it has the nico ecu f'reals!?! saw the sticker but i thought it was fa SHOW! awesome! hoping that the JP kit is authentic then! haha! saWEEEEET! would you be interested in going to JDM theory also then? im trying to sneak in there for the 13th!

[justjuiceit4]

According to one of the n2o manufacturers' tech line, the violent reaction of nitrous can dislodge the platinum biscuit. Beyond that, I've also heard of preignition issues, popping or backfiring. Also hearsay has it that a copper plug might fail quicker in the event of a catastrophic fuel failure. To be honest, I have asked many many people about this & had so many different answers you wouldn't believe it. I talked to NGK tech line & they confirmed in their experience, Irids are ok, plats are not.

I actually talked to some NGK engineers either at PRI or the Detroit Auto Show and they said that there is no reason why you should not be able to run their platinum plugs with nitrous. However, I have heard that F-body owners always take out their Bosch platinum plugs before running nitrous. I do believe that the increased pressure can cause the tips to dislodge with some platinum plugs.

[Q45tech]

US/ German Bosch plugs are never suitable for a stock VH45 much less any one power modded even just an ecu.