eddbaz
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| posted on 11/3/08 at 11:49 PM |
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zx12r fuel pipes
The zx12r that I will be fitting to my bec is an a1 year 2000 model,I am using the standard fuel pump from the bike fitted to the bottom of the fuel
tank, the fuel rail has a return pipe.I asume I will have to fit a return fuel pipe from the rail back to the tank,is this the case? if so can the
return be fed into the top of the tank or does it have to be fed to the bottom?
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Hellfire
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| posted on 11/3/08 at 11:58 PM |
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The ZX12r doesn't need a return to tank pipe, it has a pressure sensative fuel pump, it switches off when sufficient pressure is achieved IIRC 5
psi.
Steve
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eddbaz
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| posted on 12/3/08 at 08:35 AM |
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if it doesn't need a return does that mean that I need to blank off the return at the fuel rail and what about the pressure sensor that is
connected to the tubing on the return
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athoirs
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| posted on 12/3/08 at 11:56 AM |
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Mmmm I have a A1 ZX12 and it does need a return, through the top of the tank. I think the later models have a dif set up..
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Hellfire
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| posted on 12/3/08 at 12:18 PM |
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Ed, I've looked at the pictures you sent me and your engine does indeed need a fuel return. The B models (introduced in 2002) did away with the
fuel return pipe but as yours is an earlier engine, a return is required. I'd put the return into the top of the tank as Athoirs has.
Phil
PS - Ignore what Steve said earlier, his mind is elsewhere at the moment 
[Edited on 12-3-08 by Hellfire]
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bigbravedave
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| posted on 12/3/08 at 01:02 PM |
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I have an early ZX12 fitted with a gsxr fuel pump in the tank, It runs a single feed to the fuel rail which is blanked at the return end.
which bits changed on the newer B1 onwards models that allows this set up but not on my installation? help!
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Hellfire
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| posted on 12/3/08 at 06:36 PM |
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Dave, what year is your engine?
On the B models introduced in 2002, the fuel pump was re-designed which eliminated the need for a return feed.
Phil
[Edited on 12-3-08 by Hellfire]
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eddbaz
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| posted on 12/3/08 at 07:26 PM |
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Cheers for the help, return will be fitted.
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bigbravedave
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| posted on 12/3/08 at 09:14 PM |
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Its a 2001 a1 engine, is it the pump that changed on the bikes with the b engine?
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Hellfire
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| posted on 12/3/08 at 09:20 PM |
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Amongst other things as well, yes.
Phil
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Hellfire
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| posted on 12/3/08 at 10:13 PM |
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My error - sorry for misleading anyone 
Steve
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