justoyz2
Zone Head
Justoyz Racing
Posts: 858
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posted January 17, 2004 11:40 PM
external fuel pump
Has anyone removed their internal pump and replaced it with an external fuel pump? If so, what were the mods needed to perform this change?
  
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RAC4IT
Needs a job
Bergie
Posts: 3009
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posted January 18, 2004 07:17 AM
 Edited By: RAC4IT on 18 Jan 2004 11:30
I don't see a need to do so unless you're running a big turbo
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TurboBlew
Moderator
BUSY DOING THE SCHIAVO
Posts: 4590
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posted January 18, 2004 08:43 AM
I would think the pump is ok, the regulator seems abit small.
I would remove the tank from under the seat area and put a small 1 gallon unit in the tail so you can get a lower CG. Depending on how much fuel your motor needs, something like a Walbro pump will work.
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RAC4IT
Needs a job
Bergie
Posts: 3009
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posted January 18, 2004 11:30 AM
the muzzys in-tank upgrade is a walbro
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entropy
Moderator
Posts: 8671
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posted January 18, 2004 11:43 AM
quote:
I would think the pump is ok, the regulator seems abit small.
I would remove the tank from under the seat area and put a small 1 gallon unit in the tail so you can get a lower CG. Depending on how much fuel your motor needs, something like a Walbro pump will work.
TB,
how would a tank in the tail give a lower CG than just a gal in the bottom of the stock tank????? (tail is higher, eh?)
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This moderator uses moderation in moderation
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VincentHill
Needs a life
Posts: 6520
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posted January 18, 2004 01:32 PM
quote:
quote:
I would think the pump is ok, the regulator seems abit small.
I would remove the tank from under the seat area and put a small 1 gallon unit in the tail so you can get a lower CG. Depending on how much fuel your motor needs, something like a Walbro pump will work.
TB,
how would a tank in the tail give a lower CG than just a gal in the bottom of the stock tank????? (tail is higher, eh?)
Because 2 gallons and a tank would weigh between 15 and 20 pounds, but the rider weighs between 120 and 250 pounds! Lowering the rider is key here??
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canadamaxxer
Pro
Posts: 1090
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posted January 18, 2004 02:18 PM
Here's a thought: the fuel pump takes up space in the tank. What about removing the pump and installing an inline pump with higher volume output? This would give us a little more volume in the tank...and a little more range is good.
In the case of wet nitrous systems the fuel lines could then be tee'd off and used with a second fuel pressure regulator to lower the pressure down to 5-10 psi (whatever the prefered pressure is based on tuning). I have heard talk of our pumps having barely enough volume to handle 200 hp, and I am aware of the Muzzy pump, but am curious about any other options.
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nos rob
Novice Class
Posts: 63
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posted January 19, 2004 02:22 AM
How about removing the pump and regulator and pressurise the tank using nitrous oxide controlled by a regulator.
On my Bandit I use an adjustable pressure regulator fed from a nos bottle, it's set to provide about 120psi for my air shifter.
Adjust the pressure to about 70psi and it would be perr-fect!!
NOS Rob
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NOS Rob
'02 Blue ZX12R NOS and extensions
'99 NOS stretched Bandit 1200S
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dougmeyer
Needs a job
moderated
Posts: 2713
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posted January 19, 2004 03:22 PM
STOP RIGHT THERE (best Meat Loaf voice) It only takes a FEW psi to blow your tank up like a very expensive balloon, and maybe, just maybe remove you from the gene pool. The tank is not a pressure vessel.
Think for a minute here, a "cube" 12" on a side has 864 square inches of surface area. At 70 psi, that's a total load of over 60,000 pounds. Think something might just let go? And the internal area of your fuel tank is quite a bit larger than that.
Anyway, your N2O system only needs about 4-5 psi. The factory FI needs no more than 50psi. It is not pressure you seek but flow.
Get off the NOS,Rob
Doug
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MadMike
Moderator
FEAR THE BLACK FLAG!!!!!!!!
Posts: 6579
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posted January 19, 2004 03:50 PM
LMAO....
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justoyz2
Zone Head
Justoyz Racing
Posts: 858
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posted January 19, 2004 08:21 PM
ok aback to the orignal question. Has anyone ever done this mod. Converting your tank into a gravity feed system and run an external fuel pump?
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dougmeyer
Needs a job
moderated
Posts: 2713
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posted January 19, 2004 09:42 PM
Sure, I did it on my Bonneville 12 the first year when I suspected I was running out of fuel at W.O.T. before we (Muzzys) sourced the "in tank" pump we now sell, which solved the problem much more neatly.
Doug
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