nos rob
Novice Class
Posts: 63
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posted September 29, 2004 04:39 PM
Wet NOS on '02 fuel problem
Guys,
I have just installed a 4 x wet fogger setup on my '02 and am am having a problem.
Fuel to the solenoid comes from a "T" installed in the fuel line between the tank and the fuel rail. I have the fuel jets "jetted" for 45psi - a 14F to go with the 24N. 100HP progressive.
As soon as I activate the system the engine cuts for what seems like a couple of milli-seconds. I think when the fuel solenoid opens and fuel starts to flow to the jets, the fuel pressure drops for a split second (causing the engine to cut) until the regulator in the stock fuel pump starts to do it's job. Remember the '02 has a different pump/regulator setup than the previous model.
I notice on the Muzzy wet system they use a regulator that if fed from the stock fuel pump, I guess to lower the pressure to what I don't know?
Is this the answer, install a regulator?
NOS Rob
  
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johnnycheese
Pro
Posts: 1008
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posted September 29, 2004 07:23 PM
or go a real small fuel jet
____________
Builder and tuner of some of the fastest N.A. and P/A Hayabusas and ZX12 /14 in Texas
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NINJA12
Needs a job
Posts: 3310
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posted September 30, 2004 07:16 AM
 Edited By: NINJA12 on 30 Sep 2004 08:17
You might be better serve with a fuel regulator and standard jetting.
I don't think the fuel solenoid is pulsed .
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osti33
Needs a job
Posts: 2973
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posted September 30, 2004 04:13 PM
Edited By: osti33 on 30 Sep 2004 17:13
Go with the regulator and standard jetting.
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bossman12r
Zone Head
Posts: 513
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posted September 30, 2004 06:49 PM
yep red nos regulator. osti 8.78 what was that 60ft 1.43?
____________
gen 4 zx10 is fast
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nos rob
Novice Class
Posts: 63
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posted October 01, 2004 01:20 AM
Thanks guys,
Will get the fuel regulator and re-jet accordingly.
Rob
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nos rob
Novice Class
Posts: 63
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posted October 01, 2004 01:42 AM
OK, I'm stuck again, what regulator do i need?
I have done a search on Holley Red but am still not sure what to get.
I presume you guys are suggesting I should be using about 5psi of fuel pressure?
So, I will need a regulator to drop from around 45psi to 5psi, is that correct?
Jetting will then be like 26F and 24N for a 100hp setup?
NOS Rob
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johnnycheese
Pro
Posts: 1008
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posted October 01, 2004 05:56 AM
Edited By: johnnycheese on 1 Oct 2004 06:56
nos#15810
and get to a dyno guess will burn that motor up fast
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NINJA12
Needs a job
Posts: 3310
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posted October 01, 2004 06:35 AM
According to the Schnitz site 24n 28f is 80hp and 26n 30f is 100hp,
using NOS pump 24n 24f = 80 and 26n 26f = 100hp with Hi output pump.
These are usually on the safe(rich) side with fuel.
I'd say start rich and move lean if needed, the other way could be messy.
I know the zx12 responds well to nitrous but does the 24N jets really produce 100hp?
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johnnycheese
Pro
Posts: 1008
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posted October 01, 2004 06:47 AM
quote:
According to the Schnitz site 24n 28f is 80hp and 26n 30f is 100hp,
using NOS pump 24n 24f = 80 and 26n 26f = 100hp with Hi output pump.
These are usually on the safe(rich) side with fuel.
I'd say start rich and move lean if needed, the other way could be messy.
I know the zx12 responds well to nitrous but does the 24N jets really produce 100hp?
Dyno Dyno Dyno.
To many veriables
and you want at least 12:1 A/F with spray and I would take at least 2-4 degress out and hope you have NON OEM exhaust valves and good springs
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NINJA12
Needs a job
Posts: 3310
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posted October 01, 2004 07:16 AM
Why non-OEM exhaust valves?
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johnnycheese
Pro
Posts: 1008
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posted October 01, 2004 08:03 AM
Trust me and don't forget the valve springs
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kcadby
Pro
Posts: 1733
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posted October 02, 2004 01:52 PM
Very good advice...cheeseman...
Every bike I've run on the dyno...so far...has been rich and down on power...for jet-sizes...
It only makes sence for the companies to jet a bit rich (at least) so that hopefuly no-one (let alone EVERYONE) will be melting the phone lines...because they melted piston-s... 
Fuel pressure-s just varys too-damned-much from unit to unit...giving you different set-up/NEEDS for each unit...
DynoDynoDyno...
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Lorcan
Expert Class
Posts: 327
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posted October 03, 2004 04:35 AM
How much is safe with the stock valves?
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