shiphteey
Needs a job
Posts: 2529
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posted May 22, 2008 08:39 PM
Bumping up fuel pressure...
What would be the best way for me to bump up fuel pressure on my 00 with a Muzzys fuel pump? I'm seeing 80% duty cycle with a small shot that yields 30 hp extra on the dyno, wtih 40 hp extra on the dyno, duty cycle jumps up to as high as 90!
How many different options do I have and what would the price range be? Of course 1st gen injectors are smaller than the 02+ but for now I'm interested in ways of bumping up fuel pressure. If I stay with a big-ish shot I'll pony up for the larger injectors. Any particular product you guys recommend?
A.
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Gemini Motorcycles
Topping out everything from Ninja 250s to nitrous ZX-14s.
  
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ZXLNT
Needs a job
Kawpuke Extraordinare
Posts: 2853
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posted May 22, 2008 10:59 PM
Can you get to the fuel pressure regulator. I have seen mention of working the spring pressure over in the regulator to increase fuel pressure.
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shiphteey
Needs a job
Posts: 2529
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posted May 23, 2008 04:02 AM
You know I'm not sure where its located. I may need to look at the microfiche diagram. I thought the Muzzys pump pushed out 50 psi but I'm not sure where/how to introdue ways of actually adjusting pressure.
A.
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Gemini Motorcycles
Topping out everything from Ninja 250s to nitrous ZX-14s.
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psycho1122
Pro
Posts: 1608
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posted May 23, 2008 05:35 AM
Why not upgrade the injectors?!? 370's??
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You say PSYCHO like it's a BAD thing!!
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shiphteey
Needs a job
Posts: 2529
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posted May 23, 2008 07:05 AM
I'd like to explore all of my options. Besides, as stated:
If I stay with a big-ish shot I'll pony up for the larger injectors. ;-)
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Gemini Motorcycles
Topping out everything from Ninja 250s to nitrous ZX-14s.
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dougmeyer
Needs a job
moderated
Posts: 2713
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posted May 23, 2008 08:58 AM
You might want to switch to an external pump with an adjustable regulator like used on a turbo setup. Look in the Kinsler catalog (kinsler.com) for the most complete array of choices. Lot's to learn in there as well. It's a great resource.
http://www.kinsler.com/Cat_31_Web_HTMLs/0201234_screen59.html
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It's not that I think you're dumb, it's just that so much of what you know isn't true....
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zrexpilot
Expert Class
Posts: 470
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posted May 23, 2008 02:08 PM
 Edited By: zrexpilot on 23 May 2008 15:11
on your year model your regulator is external right ? couldnt you just crimp your return line a little ?
you do know that you will have to remap, everywhere.
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KZScott
Needs a life
high on speed
Posts: 7235
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posted May 23, 2008 02:46 PM
Edited By: KZScott on 23 May 2008 15:49
Ali, have a look at this on psycho
http://psychobike.com/cgi-bin/ikonboard.cgi?s=45bb19f338e8ec4813bd8cda0c098dc0;act=ST;f=43;t=64329
im guessing there no reason why you couldnt just put an adjustable one in place of the stocker
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01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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