b3ngy
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| posted on 11/7/12 at 12:15 PM |
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Hayabusa fuel system and throttle linkage
Right then, I need info/help on some bike engine related stuff as I'm really not that clued up with them! Also to let you know I didn't
build the car originally.
First issue is my hayabusa engine seems to be the early type as it has the external fuel pump bolted on up near the throttle
bodies/linkage....correct?? However there is another pump mounted down the back end which is external to the fuel tank. Is this some sort of LP pump
to get the fuel up to the front of the car and to the standard busa pump?? The only marking on it is a mitsubishi logo??? Can anyone identify it??
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The second question I have is what does the cable that attaches to the linkage above the throttle cable do?? It is attached to the ford orange bonnet
release lever on the underside of the steering cowling???
And also what is the other cable on the linkage (opposite to the throttle cable) do?? Its got an adjustable nob on the end And all I can think of is
it's some sort of manual idle control???
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Description
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Thanks for any help
Ben
[Edited on 11/7/12 by b3ngy]
[Edited on 11/7/12 by b3ngy]
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RichardK
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| posted on 11/7/12 at 12:34 PM |
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looks like standard bike fuel pump to me and maybe the bonnet release has been utilised for the choke?
Gallery updated 11/01/2011
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RichardK
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| posted on 11/7/12 at 12:36 PM |
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q3 is prob idle adjustment for tickover
Gallery updated 11/01/2011
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ReMan
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| posted on 11/7/12 at 01:04 PM |
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I suspect your right re the fuel pumps.
I'm interested, do you have a swirl pot or a fuel pressure regulator?
Do you have a return back to the tank?
www.plusnine.co.uk
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cosmick
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| posted on 11/7/12 at 01:20 PM |
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1. the fuel pump photographed is a low pressure fuel pump to bring fuel to the high pressure pump on the rail. the pressure regulator will be part of
the pump and should have a return hose going back to the tank.
2. the top cable is fast idle up when the engine is cold, you can operate this to raise the engine speed, much in the same way as a choke. in fact the
standard motorcycle lever has a choke symbol on it.
3. The flexible cable is the idle speed adjuster which can be remotely mounted in a convenient position.
If it can't be fixed with a hammer then its probably an electrical problem.
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b3ngy
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| posted on 11/7/12 at 01:44 PM |
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Cosmick, thanks for the info, the fuel setup is as I thought then.....just wanted to make sure
Reman....as Cosmick said is how mine is set up, no swirl pot though
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cosmick
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| posted on 11/7/12 at 07:36 PM |
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check out my photo archive to see how i have operated my throttle. It reduces the length of the cable by about a metre and makes the operation very
smooth.
If it can't be fixed with a hammer then its probably an electrical problem.
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b3ngy
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| posted on 12/7/12 at 06:05 PM |
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Nice idea there mate, did you use off the shelf parts or were they made as a one off??
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cosmick
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| posted on 12/7/12 at 06:28 PM |
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Ben,
If you look at your throttle bodies, you will see that there are 2 x 6mm holes already drilled and tapped to accept a home made bracket to take the
throttle cable on the underside instead of the top. I also cut off the fast idle plate and no longer use it. the plastic wheel is home made as well
and is drilled and located onto the original pulley, but you don't need to use the plastic wheel, you can still use the original pulley and
connect the throttle cable to it. Hope that helps.
Mike
If it can't be fixed with a hammer then its probably an electrical problem.
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b3ngy
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| posted on 12/7/12 at 08:18 PM |
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Mike,
Thats a great help, i'll be sure to have a look at that over the weekend. I even have a nice new throttle cable to install as well. 
Ben
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