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Take A Look At This Nitrous Schematic
#892026
12/30/10 10:19 PM
12/30/10 10:19 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
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OP
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Romeo MI
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Guys take a look at this nitrous schematic... my buddy want to run a dual stage nitrous set up... on a single plate... see if there is a easier way to do it OR if you see any problems Thanks 
Last edited by MR_P_BODY; 12/30/10 10:54 PM.
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Re: Take A Look At This Schematic
[Re: mopardad]
#892029
12/30/10 10:46 PM
12/30/10 10:46 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
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Quote:
wouldn't you want to be able to purge with the system switch turned off, like at the end of a pass
The purge is to set the bottle pressure before the
run...also he is using the 1st solenoid to take the
load off the switch
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Re: Take A Look At This Schematic
[Re: MR_P_BODY]
#892030
12/30/10 10:48 PM
12/30/10 10:48 PM
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Joined: Jan 2003
Posts: 549
Bristol, Va
fasteddie
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mopar
Joined: Jan 2003
Posts: 549
Bristol, Va
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I think I would also use a low fuel pressure switch so if fuel pressure dropped to a certain point it would shut down the entire system. Mine is wired into the arming switch ground wire.
2003 Bristol Dragway Sportsman Champion
2016 Bristol Dragway Power Hour Champion
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Re: Take A Look At This Schematic
[Re: mopardad]
#892031
12/30/10 10:49 PM
12/30/10 10:49 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
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Quote:
I also think that the wire feeding the WOT switch should not be fed via the relay (just the fuel pump)
I don't know about 2 stage N2O systems but do you shut off the first stage when the 2nd stage is activated ? it appears you are. Does the N2O retard have 2 wire activating it, that seems different from ones I have wired
Yes it does shut off the first stage and opens the
2nd via the timer.... and as I said above he is using
the first relay to take load off the switch
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Re: Take A Look At This Schematic
[Re: fasteddie]
#892032
12/30/10 10:51 PM
12/30/10 10:51 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
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Quote:
I think I would also use a low fuel pressure switch so if fuel pressure dropped to a certain point it would shut down the entire system. Mine is wired into the arming switch ground wire.
Good idea... I'll pass it along
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Re: Take A Look At This Schematic
[Re: smalltyredart67]
#892036
12/30/10 11:38 PM
12/30/10 11:38 PM
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Joined: Jun 2003
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Romeo MI
MR_P_BODY
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Quote:
Mr. Pbody you need to ask this question over on the bullet. There's way more important considerations than how to wire the purge, in fact everything else is more important than the purge. I am the furthest thing in the world from a wiring guru but I've learned a few things along the way, one of them is forget the low pressure switch(hobbs), not worth the effort. What about the trans break? that needs to be able to interupt the relay to turn on the solenoids. Ask Monte Smith specificly here or ask over on Yellow Bullet and you'll prolly get differing answeres overthere, but most likely they'll be useable.
smalltyredart
jeff r
Like I said this is for a buddy and its a foot brake
truck so no trans brake... I'm hoping Monte will
see this... I really dont go on YB much at all
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Re: Take A Look At This Schematic
[Re: MR_P_BODY]
#892037
12/30/10 11:40 PM
12/30/10 11:40 PM
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Joined: Dec 2003
Posts: 483
smalltyredart67
mopar
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mopar
Joined: Dec 2003
Posts: 483
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look up^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
smalltyredart
jeff r
sorry it looks like all those are for trans brakes, but some include digisets so it's not a total bust.
Last edited by smalltyredart67; 12/30/10 11:45 PM.
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Re: Take A Look At This Schematic
[Re: 602heavy]
#892040
12/30/10 11:49 PM
12/30/10 11:49 PM
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Joined: Aug 2003
Posts: 4,675
On the parachute mount
n20mstr
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master
Joined: Aug 2003
Posts: 4,675
On the parachute mount
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Mr P
mAke sure the purge works all the time, the reason for this is you need a ball valve in the car. You open the valve right after the burnout and close it on the return road. After closing you want to purge the line so there is no load on the plungers in the nitrous solenoids. this makes the plungers last a lot longer and they are designed that the nitrous goes behind them and keeps them on the seat. If you have the ball valve in the car you are only loading the plunger for 10-30 seconds depending on how fast the car is and how fast you close the valve...Thats a lot better than having the bottle on and there is pressure on them for hour or more, in the lanes driving back etc
....BAD A$$ STREET CAR.....
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Re: Take A Look At This Schematic
[Re: 602heavy]
#892043
12/31/10 07:09 AM
12/31/10 07:09 AM
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Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441
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Lynchburg, VA
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I always run a low fuel pressure switch. That's up to you. If you do just be sure to install it on the high pressure side of the regulator. The pressure deviates too much on the low side and would just be a headache as the switch will blip when the fuel pressure has the slightest stumble. The real protection is a fuel pump taking an unexpected dive.
The retard appears to be hooked only to the first stage of nitrous. It needs to be at least a two stage retard and be hooked to both stages. Depending on the type of retard as in how it needs to be wired. Digital retard work different.
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: Take A Look At This Schematic
[Re: Leon441]
#892044
12/31/10 09:29 AM
12/31/10 09:29 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
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Quote:
I always run a low fuel pressure switch. That's up to you. If you do just be sure to install it on the high pressure side of the regulator. The pressure deviates too much on the low side and would just be a headache as the switch will blip when the fuel pressure has the slightest stumble. The real protection is a fuel pump taking an unexpected dive.
The retard appears to be hooked only to the first stage of nitrous. It needs to be at least a two stage retard and be hooked to both stages. Depending on the type of retard as in how it needs to be wired. Digital retard work different.
Yeah the retard needs to be to both... have to change
that and look at a 2 stage retard
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Re: Take A Look At This Schematic
[Re: MR_P_BODY]
#892045
12/31/10 10:44 AM
12/31/10 10:44 AM
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Joined: Dec 2008
Posts: 1,200
UK
602heavy
pro stock
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pro stock
Joined: Dec 2008
Posts: 1,200
UK
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Sure looks like you are running a multi stage retard box the way those wires are hooked up to both stages........something like an MSD8790?...........ask you're buddy he may confirm. Leon , you are dead on regards those pressure switches fluctuating when solinoid opens/closes , even more so when pulsing solinoids , fitted correctly i've had no issues , bear in mind i use large spreads (high pressure fuel)
Last edited by 602heavy; 12/31/10 01:12 PM.
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.......motor survived for another season.
