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Nitrous plate question

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69kona

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« on: January 11, 2016, 06:20:44 PM »
Hey guys I put my plate kit on and went to test the fuel solenoid at the plate and got air and then fuel started why wouldn't It get instant fuel ? 6.5 psi fuel  pressure ..I just don't want to kill the motor ..



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« Reply #1 on: January 11, 2016, 06:30:15 PM »
How much air? Just once?

Sounds like it just purged the trapped air from the line to me. Am I over simplifying it?

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« Reply #2 on: January 11, 2016, 06:47:37 PM »
There a good delay then fuel but fuel pressure drops to 3.5 maybe pump is to small it is 110 gph...I can hear my wife in the background your gonna blow it up lol


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69kona

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« Reply #3 on: January 11, 2016, 06:54:12 PM »
GT jets does the jetting I have seem good to start after I fix fuel problem?


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jimpen

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« Reply #4 on: January 11, 2016, 09:04:08 PM »
There a good delay then fuel but fuel pressure drops to 3.5 maybe pump is to small it is 110 gph...I can hear my wife in the background your gonna blow it up lol


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. Have you flowed your fuel and checked the fuel pressure?  Do you only run one fuel pump? Was the air only once?


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« Last Edit: January 11, 2016, 09:08:47 PM by jimpen »
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« Reply #5 on: January 11, 2016, 09:33:40 PM »

. Have you flowed your fuel and checked the fuel pressure?  Do you only run one fuel pump? Was the air only once?


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X2 never trust a fuel pressure gauge. I've had over .75 of a pound difference.


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« Reply #6 on: January 11, 2016, 09:35:57 PM »
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« Reply #7 on: January 11, 2016, 10:39:19 PM »
There a good delay then fuel but fuel pressure drops to 3.5 maybe pump is to small it is 110 gph...I can hear my wife in the background your gonna blow it up lol


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A drop off in fuel pressure is like your heart beating every other time.

I would run a second fuel pump on a surge tank if you want a bulletproof system.

How did you plumb the fuel to the solenoid? Many solenoids require at least a 4psi pressure differential to open 100%.

Do you have a fuel rail or a manifold?

GT

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« Reply #8 on: January 12, 2016, 04:01:26 AM »
I'm by no means a nitrous guru "get all my kye Kelly tune ups from The Bostick" but I'll put in my .02 cents, if you are running one fuel pump be sure it can handle both systems. If not recommend running a separate, always flow your nitrous fuel pressure, just cause the gauge says 6.5 doesn't mean it flows 6.5, I also have the same gauge Jake posted above, my nitrous reg is turned up to 8.5 to reach my flowing psi, as far as air in the line it is a new system, and unless you have a air bleed system on your solenoid you will have a lil air for the first couple hits. Which is why before we line up you will here us go make a few really short burst to prime the entire system before we go out and line up. And always be sure to check for leaks, don't be scared to flow nitrous fuel pressure often, and always make sure your ignition system is doing what you want it to do. I've always been a boosted guy, switch to nitrous last year and don't regret it one bit.


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« Last Edit: January 12, 2016, 04:22:22 AM by capogniracing »

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« Reply #9 on: January 12, 2016, 06:07:04 AM »

. Have you flowed your fuel and checked the fuel pressure?  Do you only run one fuel pump? Was the air only once?


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Have not flowed tested fuel pump .
Yes only one pump and I'm getting air every time I activate the fuel solenoid . What should ideal pressure be ?when flow testing 
Thank u


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« Reply #10 on: January 12, 2016, 06:15:40 AM »

I'm by no means a nitrous guru "get all my kye Kelly tune ups from The Bostick" but I'll put in my .02 cents, if you are running one fuel pump be sure it can handle both systems. If not recommend running a separate, always flow your nitrous fuel pressure, just cause the gauge says 6.5 doesn't mean it flows 6.5, I also have the same gauge Jake posted above, my nitrous reg is turned up to 8.5 to reach my flowing psi, as far as air in the line it is a new system, and unless you have a air bleed system on your solenoid you will have a lil air for the first couple hits. Which is why before we line up you will here us go make a few really short burst to prime the entire system before we go out and line up. And always be sure to check for leaks, don't be scared to flow nitrous fuel pressure often, and always make sure your ignition system is doing what you want it to do. I've always been a boosted guy, switch to nitrous last year and don't regret it one bit.


Gimme that BECKY!
Thank u just read this gives me some good info on flow pressure on the fuel pump ... I'm scared to pop this thing on the first run ..so I be picking your guys
 " brains "  thanks for the info


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69kona

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« Reply #11 on: January 12, 2016, 06:17:14 AM »
Got a free full mother bottle lol . Tell my wife I have to use it before it gos bad..lol


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69kona

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« Reply #12 on: January 12, 2016, 06:31:09 AM »
I've read a lot on plate system but definitely a newbie when it comes to nitrous
I have the Nos activated on a WOT switch and I put a purge for the Nos solenoid . With that said how do u purge the fuel side ?


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Onthenos

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« Reply #13 on: January 12, 2016, 06:31:16 AM »
This will help save your engine if used correctly

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« Reply #14 on: January 12, 2016, 06:35:45 AM »

Have not flowed tested fuel pump .
Yes only one pump and I'm getting air every time I activate the fuel solenoid . What should ideal pressure be ?when flow testing 
Thank u


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. I'm not sure what tune you are looking for. I'm running 6.75 psi on the nos side. If you arm the nos you will see 9.5 psi on the gauge. It all depends on the jet you are flowing it through. I run a mechanical pump to the motor at 6.5 psi and the nos is in an electric pump. If you getting air every time it means you have a problem. Not sure what it is for sure either bleeding down our sucking air. The pump your using now I would not use for both systems just my opinion. Where are you located?  Maybe we could offer some help. What size shot you trying to run?  Most guys do not hand out much help with nos because we will be the first one blamed when the stock bottom end let goes. Or loss of compression due to new windows in your Pistons don't forget my favorite custom new longer rods enjoy. If done right it is real safe and real fun.              Chase Online
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« Reply #15 on: January 12, 2016, 09:40:06 AM »
What he said ^^^   :-)

69kona

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« Reply #16 on: January 12, 2016, 10:12:09 AM »
Ok today I flow test the fuel pump ... The Bottom end is balanced with has forged Pistons  ... I want to get fuel situation taken care of by this weekend ... 


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69kona

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« Reply #17 on: January 12, 2016, 10:14:09 AM »
I'll take full responsibility if it blows up and not point any fingers ... Lol Is any one gonna be at Elsinore this weekend ?


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« Reply #18 on: January 12, 2016, 10:32:05 AM »
Having just setup my nitrous system, i have a few pointers for you. Take them with a grain of salt

1. Are you running a mechanical or electric fuel pump?
2. What is your jetting, i missed it. FYI my 150 is 63n 57fuel but im not 100% sure i can double check if you would like
3. It is always recommended to start at the smalles nitrous shot you have jetting for. this minimizes damage if something is off
4. FLOW YOUR FUEL SIDE
5. Jet RICH on fuel first
6. The first time you hit it, only hit it for abou 1-3 seconds. Then let off, pull plugs and make sure everthing looks okay
7. Reatrd timing while on the bottle

Im running approx 400 hp on motor, then the 150 shot on top. Im running a 150gph Aeromotive pump. My gauge reads about 8psi at the fuel solenoid, but dennis and i flowed it at 6.5psi. When i hit the button, i can hear it make the pump work harder. But it is more than enough in my case. I also have 0 delay in fuel delivery after i hit the button, once i bled the lines. I also have a Wideband air fuel gauge, my tuneup is still rich (rich=safe to a point) while on the bottle im in the 11.2 range. Ill eventually lean this down a little bit.

I've never setup a system using a mechanical pump, do the lines drain down after you shut the engine off? If so, and you are running a mechanical pump this may be why you have air everytime. If so. I would recommend either going to a dedicated electric pump, or if you must run the mechanical pump. Bump the button a few times with the nitrous bottle OFF until you can feel the fuel come in (engine will bog from the extra fuel)

If you have any questions feel free to ask
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« Reply #19 on: January 12, 2016, 12:15:48 PM »
Electric fuel pump 110 gph and .047 nos jet and .053 fuel jet . Starting out at 100hp eventually move up to 150
If u can see what jetting your running?
Seems the fuel pump I have is not keeping up ..


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69kona

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« Reply #20 on: January 12, 2016, 12:18:18 PM »
Thank u Steves86ta


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« Reply #21 on: January 12, 2016, 12:26:16 PM »
how much power are you making on motor?

sounds like to me you have a fuel delivery issue. idk if 110 gph will be enough

What size fuel lines? What size fuel pickups? Bottom feed or top feed?
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69kona

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« Reply #22 on: January 12, 2016, 12:27:22 PM »
Good Info from everyone! So what's a good baseline tune for a 100hp ?


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« Reply #23 on: January 12, 2016, 12:30:16 PM »
You should be close with what you have. Might want a smaller fuel jet but that should be safe

Here's a site to help

http://www.robietherobot.com/NitrousJetCalculator.htm
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69kona

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« Reply #24 on: January 12, 2016, 12:30:20 PM »
Top feed tanks with -6 line ... An honest 375 to 400 hp


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