ZEX 82011 Install help

[Dr.Evil]

I just got a used zex kit and need some help figuring out how to hook it up.

Also, where does the "The regulator hose barb from the
NMU gets connected to the vacuum fitting on the
engine's fuel pressure regulator" Is that connect to the fuel rail pressure release? I don't recall this motor having a fuel pressure regulator.

Also, where did you find the "unused vacuum fitting
coming off of the intake manifold" The only vacuum
connection I see on the intake is used for the
secondary controls.

One last thing, if this is a dry system, then why does
fuel need to be added to the mixture of nitrous? I
thought it just shot straight nitrous? The manual is not really specific. I cant tell if it is saying that it increases fuel pressure or if it actually mixes more fuel with the N20.

Any help would be great, and pics would be awesome.

Thanks!

 

[RStalveyARFF]

Dr.Evil:
I just got a used zex kit and need some help figuring out how to hook it up.

Also, where does the "The regulator hose barb from the
NMU gets connected to the vacuum fitting on the
engine's fuel pressure regulator" Is that connect to the fuel rail pressure release? I don't recall this motor having a fuel pressure regulator.</strong>

Follow the fuel rail to the passenger side. There's a round piece with a vacuum line sticking out the top. This is where the TO REGULATOR hose goes. Make sure you clamp these connections, they will blow off!

<strong>Also, where did you find the "unused vacuum fitting
coming off of the intake manifold" The only vacuum
connection I see on the intake is used for the
secondary controls. </strong>

Run your other vacuum line to the intake fitting directly in front of the fuel pressure regulator. There is a hose that runs between this fitting and the fuel pressure regulator.

<strong>One last thing, if this is a dry system, then why does
fuel need to be added to the mixture of nitrous? I
thought it just shot straight nitrous? The manual is not really specific. I cant tell if it is saying that it increases fuel pressure or if it actually mixes more fuel with the N20. </strong>

It is a straight shot of nitrous. All it does is bump up the fuel pressure through the stock injectors.

<strong>Any help would be great, and pics would be awesome.

Thanks!

 

[Dr.Evil]

After looking at it further, that is where I figured it went. Now, where to mount the box? shrug

 

[RStalveyARFF]

I mounted mine on the driver side strut tower.

 

[Dr.Evil]

Alright I mounted it where the stock airbox sits and am getting a SHOshop snorkel to use for the intake.

I got it all wired up, now just need to run the N20 lines from the bottle to the NMU, then to the jet. Also have to hook up the vacuum lines.

I found a cool spot to mount the tank. I reversed the tall/short brackets and hung it from the inside of the trunk, mounted to the little cubby between the speakers. I can not be seen when looking directly in the trunk. I can still use the trunk and if a potetial victum is looking over the car, it won't be seen. I'll post pics later.

 

[RStalveyARFF]

I wouldn't recommend a mounting setup like that due to the sheer fact if that bottle BLEVEs or gets punctured in any way, it has almost nothing stopping it from entering your passenger cabin. The NMU is already going to be obvious enough so there's no need to hide the bottle. I do like your thinking though. Sub boxes make great places to hide bottles too. wink

 

[Dr. Tweak]

SHO91MTX:
I wouldn't recommend a mounting setup like that due to the sheer fact if that bottle BLEVEs or gets punctured in any way, it has almost nothing stopping it from entering your passenger cabin. The NMU is already going to be obvious enough so there's no need to hide the bottle. I do like your thinking though. Sub boxes make great places to hide bottles too. wink

I may be wrong, but I don't think that N2O will BLEVE. But if it did, I wouldn't matter if it was in a steel box in your truck, you'd still get it. N2O is very safe however, dispite what you may learn in certain popular movies.

Now if you were running propane injection...

<small>[ March 26, 2004, 06:15 AM: Message edited by: JDLangevin ]</small>

 

[masho95]

Dr.Evil:
Alright I mounted it where the stock airbox sits and am getting a SHOshop snorkel to use for the intake.

I got it all wired up, now just need to run the N20 lines from the bottle to the NMU, then to the jet. Also have to hook up the vacuum lines.

I found a cool spot to mount the tank. I reversed the tall/short brackets and hung it from the inside of the trunk, mounted to the little cubby between the speakers. I can not be seen when looking directly in the trunk. I can still use the trunk and if a potetial victum is looking over the car, it won't be seen. I'll post pics later.

Check out how I mounted my tank in my trunk...
http://www.cardomain.com/id/masho95

What type of hose do you have for running the vacuum lines from the NMU to the FPR and intake? There's nothing in the kit that'll reach that far, so I'm going to have to pick some up to finish mine. I plan on mounting the NMU in the same spot as you. Just need to put the NMU in, the vacuum lines, and finish wiring the switch. Oh and of course get my bottle filled.

 

[SHOMurph]

You also have to remember that there is a pickup tube inside the bottle. It is angled down towards the bottom away from the label. If you mount the bottle different from normal you may not be getting a good shot when the bottle starts to run low.

 

[masho95]

SHOMurph:
You also have to remember that there is a pickup tube inside the bottle. It is angled down towards the bottom away from the label. If you mount the bottle different from normal you may not be getting a good shot when the bottle starts to run low.

Yep that's true, and the proper methods of mounting the bottle are shown in the directions.

 

[RStalveyARFF]

JDLangevin:

SHO91MTX:
I wouldn't recommend a mounting setup like that due to the sheer fact if that bottle BLEVEs or gets punctured in any way, it has almost nothing stopping it from entering your passenger cabin. The NMU is already going to be obvious enough so there's no need to hide the bottle. I do like your thinking though. Sub boxes make great places to hide bottles too. wink

I may be wrong, but I don't think that N2O will BLEVE. But if it did, I wouldn't matter if it was in a steel box in your truck, you'd still get it. N2O is very safe however, dispite what you may learn in certain popular movies.

Now if you were running propane injection...

Any gas can BLEVE, it just depends on the temp needed to do so. Another point about that mounting area is you wouldn't be able to really use a blow down tube as required by NHRA sanctioned tracks.

 

[fred79]

that depend by blow do you mean burst teh tank or physically explode?
any compressed gas can burst a tank due to heat or time(tanks can weaken over time)
but it would depend on teh chemical contents of the tank as to wether it would blow up.

 

[RStalveyARFF]

BLEVE is Boiling Liquid Expanding Vapor Explosion aka: pressure expansion greater than the capacity of the holding cylinder. N2O will not explode on its own, but as an oxidizer it will fuel combustion.

 

[Dr.Evil]

Will these plugs work with the n20?

Autolite Platunum AP3923. They said these were a stage cooler than stock, so I assume they are good....If not, then what should I use?

 

[masho95]

Dr.Evil:
Will these plugs work with the n20?

Autolite Platunum AP3923. They said these were a stage cooler than stock, so I assume they are good....If not, then what should I use?

I wouldn't run a platinum plug with N2O. I'm going to be running a set of Autolite copper plugs. I don't have the part # off hand but I'm sure someone else could chime in with it.

 

[olympic]

You can't run platinum plugs with nitrous PERIOD. If you want cheap then go with regular copper plugs 1 heat range colder. If you want something that will last as long as the Motorcraft double platinums, then get some Denso iridiums, again, one heat range colder.

 

[Dr.Evil]

Alright I got some autolite copper core 2923. The book called for 2924, so I figured 2923 is one range cooler, correct?


Also, is there supposed to be a fuel pressure spike when the system is activated at WOT? My guage did not indicate one, however it did increase from around 30 to 32 PSI.

Is this okay?

<small>[ March 28, 2004, 04:28 PM: Message edited by: Dr.Evil ]</small>

 

[Dr.Evil]

I need to know the answer to the above two questions ASAP, I really want to try this out today.

Thanks
Matt

 

[masho95]

Dr.Evil:
Alright I got some autolite copper core 2923. The book called for 2924, so I figured 2923 is one range cooler, correct?


Also, is there supposed to be a fuel pressure spike when the system is activated at WOT? My guage did not indicate one, however it did increase from around 30 to 32 PSI.

Is this okay?

I don't know if you typed in the wrong part # but Autolite stock part # is 3924. If you meant that instead of 2924. So again the correct Autolie part # should be 3923 not 2923. Anf as fuel pressure goes did you try running the system while checking fuel pressure? I haven't run mine but I would assume that you would have more fuel pressure when the N2O is activated. And IIRC idle fuel pressure should be around 38psi not 30.

 

[Dr.Evil]

I forgot to unpug the vacuum line the first time. So I unpuged it and tried it again, around 40 PSI at idle, and it raised up to around 44 at WOT. It didn't matter is the system was active or not. whats the deal? I thought it should spike to over 60? Maybe the pressure guage couldn't keep up?

also, I got 3923, not 2923 like I said above. These are alright, right?

<small>[ March 28, 2004, 07:56 PM: Message edited by: Dr.Evil ]</small>