cd.thomson
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| posted on 24/9/09 at 06:23 PM |
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zx9r carbs - vacuum take off?
Hi guys, carbs have arrived (woo!) do they operate using a vacuum takeoff from the manifold as this pipe here would suggest?
Craig
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blakep82
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| posted on 24/9/09 at 06:24 PM |
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that one goes to the back of the air box i believe. on the filtered side of the filter.
they look real good 
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cd.thomson
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| posted on 24/9/09 at 06:27 PM |
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okay so not really very important then..
there arent any other obviously mysterious pipes, so i guess its a case of putting them on a manifold , connecting the fuel and edis to the engine and
pressing the go button?
Craig
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blakep82
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| posted on 24/9/09 at 06:30 PM |
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pretty much, yeah.
i'm not entirely sure what those pipes do, but from looking at them, i think they help operate the sliders (the bits inside that go up and down)
but yeah, connect to manifold, fuel in the bottom, 4 wires or something for the edis/coil/crank sensor, and crank the starter 
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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mistergrumpy
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| posted on 24/9/09 at 06:30 PM |
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As Blake said. Don't whatever you do just block the open end off though like I did. It plays hell with the fuelling and stalling and I
couldn't pass SVA.
If I remember rightly that tube splits to each carb and provides a jet of air to each carb below the butterfly valve so it may be an idea to put a
filter on it. I haven't but need to as I think mine are getting a bit of crud going through.
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Mark G
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| posted on 24/9/09 at 06:54 PM |
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They look similar to blade carbs, I just put a breather filter on mine and it runs without issues.
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jacko
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| posted on 24/9/09 at 06:59 PM |
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Fit a small air filter on that pipe it stops crap getting in
 
-------!!------
[Edited on 24/9/09 by jacko]
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blakep82
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| posted on 24/9/09 at 07:25 PM |
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ah, i sort of assumed that they sucked air out the top of the diaphrgam from difference in pressure etc, but it sounds even easier than i thought
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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marcjagman
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| posted on 24/9/09 at 09:00 PM |
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I have to ask, why bike carbs on a car engine?
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cd.thomson
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| posted on 24/9/09 at 09:18 PM |
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all carbs do is mix fuel and air, big bike carbs are designed to do this job for a high performance engine and are produced in large quantities so the
relative performance boost/cost ratio is vfavourable. Same for bike throttle bodies.
Craig
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YQUSTA
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| posted on 24/9/09 at 09:45 PM |
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Just a vent pipe that on mine goes down a long pipe hanging down near the lower chasis rails.
 
Description
[Edited on 25/9/09 by YQUSTA]
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coozer
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| posted on 24/9/09 at 10:45 PM |
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On the bike they equalise the air pressure when the big scoop is ram air 'boosting'.
With no ramair on our cars they just need to be free to air. I just pulled the rubber hoses off and pointed the plastic connectors between the carbs
down, or you can run them into your air filter if you have one (I don't)
I blocked them on my Striker and it caused havoc, backfiring, dumping fuel into the air filter etc.. be warned!
1972 V8 Jago
1980 Z750
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