Nitrous Users - quick simple question

[KatDiesel]

I think I know the answer but for some reason am not 100% sure. Using nitrous shouldn't raise your EGT's considerably should it? Is it even possible that it lowers it?



Anyone using it that can tell me?





When do the auto guys have the nitrous set to kick in? Other then the WOT switch... do you have a boost setting? A seperate push button to inject whenever ya wish?







Whats a good starting jet size to use? Injectors should be BD IV's (unless I don't like'em over my DDIII's).

 

[Strick-9]

I'd like to know about EGT's as well. I'll tell you this weekend.



Where did you end up putting the bottle? I removed my center seat to build a new center console, but the seat would have been too high for the girlfriend. Now, I'm just cramming it behind the seat.



As for the wiring, I have a two stage system. I have a small toggle to arm the system. I have two rocker switches to select which jet or both to come on. I built a little electrical box to tap into my TPS voltage so I can adjust what throttle angle engages everything. My BIG jet has a hobbs switch set to 30 psi.

There's also a small momentary switch that I'm going to name my go-go button.



So for any NOS to flow several conditions have to be met.

arming switch

jet selector switch

sufficient throttle applied

momentary button pressed

30 psi boost for big jet



The tough part was hiding all these switches and relays in the ashtray. I didn't want it to clutter up my dash so I hid everything.



Having a pull out NOS panel is kinda neat.



I'll let you know how it works. If you beat me to the punch you do the same.



I did a lot of archive searching to look at various jet sizing. Adam has run several jets and I remember him saying he thinks the solenoid is actually a limiting factor for him with the 82 jet. He's running the smallest solenoid. (powershot?) That's why I went with two. Lawrence is running four jets in the 20-30 range. (130+ HP) HVAC was running a mid 50 or 60 jet at one time.



Hopefully they will all chime in and educate us, but that is what I found searching.



-Chris

 

[KatDiesel]

I haven't got it yet. I'm poor at the moment... . still trying to recover from the B1, new exhaust and some BDIV's. I'm just trying to get everything "mapped" out in my head of whats going where and how its gonna work. I'll have it soon tho I hope. Waiting on my tax return!! And a check for some stock I sold. Also have to address my fuel supply a bit better as well.



I'm pondering if I can put hinges on the front of the center seat somehow and have teh whole seat fold out towards the radio... . haven't looked at it yet... its just a thought. I'm looking around at different speaker enclosures... ... .



I'm sure you'll have your up and running before me.



This is what I will have it comes with the bottle, brackets, line, electrical connectors and wire, WOT switch, adjustable boost pressure switch, nitrous filter, fogger nozzle, assortment of jets and a . 125" orifice solenoid



Thanks for the reply.

 

[Strick-9]

That is what I wanted to do with the seat too, but a 10lb bottle is WAY too big. You might try Stefan's advise of three 2. 5lb bottles. Sounds like you are getting some kind of package deal though. The hump in the floorboard is what kills this idea.



Several of the solenoids have 1/8" pipe thread connectors, but the actual orifice is MUCH smaller. Mine do anyways. If yours has a true 1/8" orifice that you could see through that definately wouldn't limit flow.



Maybe Jim Fuller can answer the EGT question. He seems to know a thing or two about NOS.



-Chris

 

[Floor It]

The NOS kit comes with a cheater series solenoid,I'm working on my own kit-Kat

 

[Bad340fish]

I know if you use a WOT switch with no hobs switch it will try to shut the engine down if turned on to soon. My buddies truck on the Dyno actualyt sounded like it backfired out the pipe when he got into the juice a little early.



An arming switch and a WOT switch with an adjustable boost switch would be the hot ticket IMHO. I would put the hobbs switch set low, because as soon as it comes on turbo lag is GONE

Clark

 

[CUMINNTSTRKN]

Originally posted by KatDiesel

I think I know the answer but for some reason am not 100% sure. Using nitrous shouldn't raise your EGT's considerably should it? Is it even possible that it lowers it?



Anyone using it that can tell me?





When do the auto guys have the nitrous set to kick in? Other then the WOT switch... do you have a boost setting? A seperate push button to inject whenever ya wish?







Whats a good starting jet size to use? Injectors should be BD IV's (unless I don't like'em over my DDIII's).

kat



egt's shouldn't go up. and imo if they go down your running to much n2o. the reason being that you have more air than fuel and are losing power. i make 150hp with my setup. i've made over 200hp with a lot of n20.



i like a 2 stage kit for street racing. i turn them both on with 1 switch. when i flip the switch the small stage comes on, and then when boost hits 30-35psi a hobbs switch turns on the bigger stage.



for just the track you could run just a bigger jet like a 70. but the 2 stage is nice for spooling on the street.



with bd-4's or sm's i would run a 20jet off the bottom and a 50-60 in the 2nd stage. you can fine tune it at the track.



i bring up the boost at the line to 25psi and let off the brake and hit the n2o. you will be all .



jim

 

[Strick-9]

Thanks Jim,



From your post, I have a feeling I'm going to be running WAY to much NOS.



I guess we'll know on the 16th.



I'd like to ask your opinion on some other nitrous questions.



Do you think direct port injection would be worth the effort?

What jets are you running? Can I assume you are just using a 60 jet and a 20 jet for the 150HP or is there something else you don't want to give out?



You seem to have the hot ticket with this stuff right now.



I asked the NOS tech line about direct port and they basically laughed me off the phone. They said it would run too lean and get hot. They went on to say they could spray 400+ HP through the intake pipe so why bother.



They told me there would be NO advantage to direct port. Personally I don't agree, but I'd like other people's opinion.



-Chris

 

[BigYellowIron]

I think that KCIR is going to see alot of scattered Dodge/Cummins Parts this year!



Adam

 

[KatDiesel]

Re: Re: Nitrous Users - quick simple question

Originally posted by CUMINNTSTRKN

i like a 2 stage kit for street racing. i turn them both on with 1 switch. when i flip the switch the small stage comes on, and then when boost hits 30-35psi a hobbs switch turns on the bigger stage.

Can you run 2 stages off of one solenoid?

 

[CUMINNTSTRKN]

Originally posted by Strick-9

Thanks Jim,



From your post, I have a feeling I'm going to be running WAY to much NOS.



I guess we'll know on the 16th.



I'd like to ask your opinion on some other nitrous questions.



Do you think direct port injection would be worth the effort?

What jets are you running? Can I assume you are just using a 60 jet and a 20 jet for the 150HP or is there something else you don't want to give out?



You seem to have the hot ticket with this stuff right now.



I asked the NOS tech line about direct port and they basically laughed me off the phone. They said it would run too lean and get hot. They went on to say they could spray 400+ HP through the intake pipe so why bother.



They told me there would be NO advantage to direct port. Personally I don't agree, but I'd like other people's opinion.



-Chris

i'm not an expert by any means, i just seem to be pretty lucky.



jet size depends on how much unburnt fuel you have/smoke. i know some guys that have run a 120 jet and had pretty good results, i just think it's to much. i have never seen a 24v smoke worse than mine. with a 100 jet my egt's started coming down and my et's went up. i plan on spending some time on a dyno before the race season starts, i'm going to rent it for 1/2 a day. to get everything lined out.



imo direct injection is a waste of time. with a turbo charged motor you don't need it. at 40+lbs of manifold pressure it will get slammed into all the cylinders.



bill k injected the nos in 4 spots on stefan's truck in tacoma. i think he was running 2 35's and 2 20's and made 70-80 hp. on the same day i made 150hp. to be fair it was the 1st time they had used the n20 on the truck. i have been playing for awhile.



if you try di let me know how it pans out for you. when you talked to holley's tech line did they say 400hp on a diesel, or did they mean on a plate system for a gasser. i think i can get close to 250rwhp out of n20 but 400hp is a strecth on my truck.



jim

 

[CUMINNTSTRKN]

kat



you have to have 2 solenoids. for just flat out drag racing at the strip i think 1 is fine. just hook a switch up to a hobbs switch. if i

were you this is what i would do.



i use my 1st stage to help spool my turbo on the street. it's tuff to get some one to wait 10-15 sec while my turbo spools upto 25psi.



set your hobbs to come on at 30psi.

when you roll up to the lights turn on your switch and forget about it. stage and launch when you cross the line turn off the switch.



if if you want go with a 2 stage, remember the little stage can use the smallest solenoid you can buy.



jim

 

[Strick-9]

Jim,



No they were talking about diesels. I kept reminding them it was a diesel everytime they told me about it running too lean. They said the same laws apply. They said their diesel pulling tractors are gaining 400+ HP through the intercooler pipes with no problems.



-Chris

 

[CUMINNTSTRKN]

i would believe that the pulling tractors get that. they have a ton of unburned fuel!!!



jim

 

[KatDiesel]

For starters I will just run a single stage until I can get used to it, and get some more $$$ saved up.



For the dragstrip... ... and dynoing purposes... . how big of a single jet should I try? 70?? What boost level should I bring it in? 25 to 30psi boost?



Or should i use a smaller jet and bring it in sooner?





Injectors "should" be BD IV's.

 

[CUMINNTSTRKN]

kat



i would start with a 70 and bring it in at 25psi.



jim

 

[KatDiesel]

Originally posted by CUMINNTSTRKN

i would start with a 70 and bring it in at 25psi.

Thanks!



The kit I am getting includes . 052 to . 078 (8 of them).

 

[Smoker]

How about a 10lb bottle to a Pro Shot solenoid operated by a progressive controller. This would then feed a fogger with a 100+ jet on the nitrous side and water/alcohol injection on the fuel side. All this would go down the throat of a very heavily fueled 12 valve. Could this work? Well, it better work since I have already bought everything. One of these days if I get the time, I am going to put it all together.

 

[CUMINNTSTRKN]

Originally posted by Smoker

How about a 10lb bottle to a Pro Shot solenoid operated by a progressive controller. This would then feed a fogger with a 100+ jet on the nitrous side and water/alcohol injection on the fuel side. All this would go down the throat of a very heavily fueled 12 valve. Could this work? Well, it better work since I have already bought everything. One of these days if I get the time, I am going to put it all together.

smoker



i think it would work good. i just think in order to atomize the h2o you will have to spray the n20 any time that you are using h2o. that's not really a problem it will just be harder to tune.



goodluck

jim

 

[Todd T]

I think what he is after could be achieved using two hobbs switches, one for each Jet.



that way he could still use the H2O for EGT control while towing, without adding back in more heat with the N2O.



no real reason to use the progressive controller at all, other than to fine tune it without adjusting the hobbs switches.