Nitrous.....Who has it?

[rocket 5979]

Well, we didn't get finished. Everything is mounted and placed so we know where it's supposed to go, all that needs to happen are the switches need to be wired up in my console and glove box, bottle heater needs switched power wire run to it, I need to cover all the hoses and wires with wire loom, and it needs to be tuned...

You got a bottle pressure gauge, right?



I have a question for the experts that ARE running NOS here. What spark plugs did you use? I'm thinking that the Autolite Copper plugs (Part # 103) will do okay if we up the fuel pressure a little more, but if anyone here has a better plug they reccomend, and you own and use nitrous, I'm happy to try it.

I don't remember you saying which shot your planning to run in the X yet. Once I know that then I can reccomend a heat range of plug for you. Just to give you an example; I went with 2 heat ranges colder in a copper plug when spraying 100 shot. I don't know the Autolite plug # crossovers by heart so I cannot make an actual part # reccomendation but just go off of -1 heat range for anything up to 50 and then -2 heat ranges once your at 75-100 shot.

The plugs have nothing to do with fuel pressure. The lower heat range plugs will lower EGT which will prolong engine life. The only reason you would up fuel pressure if you were running lean in the A/F ratio. Being that your running with a wet kit you will leave fuel pressure alone anyways. You will tune your A/F with the different sized nitrous and fuel jets. Go with the reccomended size fuel jet that coincides with your nitrous jet. Start out with the rich jet and then try it on the dyno. Depending on the A/F and how far it is off will depend on if you will want to rejet with a smaller fuel jet to lean the A/F out a little or stay with it a tad rich. Make sure you gap your plugs starting at about .035" instead of the stock reccommendation. I forget if your stocker gap is .045" or not. Whatever it is; subtract .010" off and gap your plug at that so you dont have spark blowout. The smaller gapping is not so crucial on a smaller 50- shot. If your running aroung 50- then dont bother closing the plug gap much.


Anyways, here's a pic of the engine bay...

Glad to see your making progress.

 

[au01st]

I have a bottle pressure gauge.

75 shot.

Stock plug is Autolite APP103 with a .054" gap, which is a double platinum. I don't mind switching brands if there is one colder.

The truck will be tuned with a wideband a/f gauge.

 

[rocket 5979]

I have a bottle pressure gauge.

75 shot.

Stock plug is Autolite APP103 with a .054" gap, which is a double platinum. I don't mind switching brands if there is one colder.

The truck will be tuned with a wideband a/f gauge.

Yeah drop 2 heat ranges in a copper plug. Then close the gap a little and you should be golden.

 

[au01st]

So, do you know a plug number by chance? When I looked through the 2005 Autolite book, the coldest plug with the correct size and thread was the 103, which was the copper.

 

[au01st]

Purge video

 

[conig]

looks good, the only number I know how to read are ngk's. but any of the auto stores should be able to see whats colder, just do not run platinuim plugs.

 

[au01st]

Yeah, I was looking at NGK TR-45s, since the TR-55 is stock, but I really wanted to say with Autolite.

 

[rocket 5979]

Yeah, I was looking at NGK TR-45s, since the TR-55 is stock, but I really wanted to say with Autolite.

NGK makes some good stuff. I personally run NGK-TR6's in my KB supercharged Explorer. I trust em.

 

[Explorer#2]

Jeff had i only known that this was your truck Math Excel would have been a lot more fun

 

[au01st]

Indeed. That's okay, fall semester will be fun; Cal 3, Diff, Dynamics, and Thermo... plus LSU, FLA, GA home games. At least now I have someone in my town to verify that the truck has nitrous.

 

[Explorer#2]

HAHA, there are at least four of us from Auburn on here, but i didnt get all the home games i only got the mini season

 

[expo5.0]

i'm just following the thread-

can't believe how much stuff there is under your hood, not used to how stockish looks anymore