cd.thomson
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| posted on 18/4/11 at 11:14 AM |
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zx9r main jets and megajolt
Hi guys,
Does anyone know the standard size of zx9r main jets and could someone suggest a supplier of replacement jets? Without looking inside them again im
pretty sure they have non-adjustable needles, could anyone confirm?
With regards to megajolt, is it possible to create a reasonably pleasant ignition map without a RR? Does anyone have a map for a C20XE running bike
carbs or the ignition map from their megasquirt running bike TBs I could try flashing to my jolt?
Thanks in advance
Craig
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YQUSTA
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| posted on 18/4/11 at 11:27 AM |
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Don't know the size of the jets off hand but your right the needles are non adjustable as standard.
Tiny washers may work for the needles.
"If in doubt flat out"
Colin McRae
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cd.thomson
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| posted on 18/4/11 at 11:39 AM |
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I actually need to lean the mixture out, so ill have to do it with the mainjets I think, with the needles being fixed.
Thanks for getting back to me
Craig
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rich201283
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| posted on 18/4/11 at 01:09 PM |
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I have checked my zx9r manual
B Model - 200
C Model -155
E Model - 60 &165
Which model carbs are they?
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cd.thomson
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| posted on 18/4/11 at 02:43 PM |
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I'm not sure to be honest, is that any way to check? Do you know of any jet suppliers? 
Craig
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macc man
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| posted on 18/4/11 at 04:06 PM |
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Most people usually drill out the existing jets to a larger size. 1.6mm is a good startig point.Works fine on my 2.0 zetec on zx9r carbs. You can
always go larger, or solder holes up and redrill if too big.
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coozer
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| posted on 18/4/11 at 04:16 PM |
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Dynojet kits have the adjustable needles you need, and different jet sizes.
Rule of thumb is the jet size is the same in mm.
140 jet is 1.4mm etc..
1972 V8 Jago
1980 Z750
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jacko
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| posted on 18/4/11 at 05:05 PM |
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You don't need new needles you put small washers under the head of the needles
as said zx9r / e models have 2 sizes fitted in a set of carbs
I am talking about E model carbs
Jacko
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mcerd1
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| posted on 18/4/11 at 05:25 PM |
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quote:
Originally posted by cd.thomson
I'm not sure to be honest, is that any way to check? Do you know of any jet suppliers?
model E ones look like this: (and have 'CVR' cast into the side of them)
the earlier ones look like these: (adn should have 'CVK' writen on them somewhere)
don't ask me how you tell a model B from a C though....
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cd.thomson
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| posted on 18/4/11 at 06:24 PM |
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thanks for the info everyone, just to clarify I'm trying to lean out the mixture. Once the engine comes off tickover its running too rich (5-6%
CO). I think that means I need to reduce the jet size and any washers need to be removed rather than added.
I'll give dynojet a look, cheers!
mcerd1, don't forget I still have your IVA bars, sorry I've kept them so long mate. I'll return them once its IVAed or sold, get in
touch if you need them sooner. I have the earlier model according to those pictures, thank you.
[Edited on 18/4/11 by cd.thomson]
Craig
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cd.thomson
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| posted on 18/4/11 at 06:45 PM |
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for future reference http://www.wemoto.com/bikes/Kawasaki/ZX9R_ZX_900_B3_B4/96-97/picture/Carburettor_-_Main_Jet/
Craig
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mcerd1
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| posted on 18/4/11 at 09:59 PM |
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quote:
Originally posted by cd.thomson
mcerd1, don't forget I still have your IVA bars, sorry I've kept them so long mate. I'll return them once its IVAed or sold, get in
touch if you need them sooner. I have the earlier model according to those pictures, thank you.
I won't be needing the bars for a wee while yet  I'm still rebuilding the garage for the second time at the moment 
as for the carbs I've got a haynes manual for the ZX9R somewhere - I'll dig it out and send you the carb pages when I get a chance...
[Edited on 18/4/2011 by mcerd1]
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