dave r
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| posted on 3/1/08 at 03:21 PM |
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zx9r bike carbs on a pinto
well i have made my manifold, and fitted it today
main jets are at 1.6mm
i can get the car to idle, on the 'choke', but it wont idle once warm, without the choke
if i rev it, and manage to get it over ticker, it revs ok...
am thinking either too small idle jets or they are blocked
anyone know which ones they are ?
or... if i am talking out of my backside, what do you think the problem is ??
dave
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Guinness
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| posted on 3/1/08 at 03:26 PM |
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Bike carbs don't have a choke as such, it's more like an "enrichment device". Basically a valve that opens and lets fuel pour
in!
David Jenkins found a very useful link, to an American site in this thread:-
http://www.locostbuilders.co.uk/viewthread.php?tid=75155
Direct linky:-
http://www.gadgetjq.com/keihin_carb.htm
Which may prove helpful.
Cheers
Mike
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dave r
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| posted on 3/1/08 at 03:51 PM |
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thanks for that link.. good reading
mine are minki's but look similar enough
will see what happens tommorow
if anyone has any other tips it would be appreiciated
[Edited on 3/1/08 by dave r]
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Guinness
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| posted on 3/1/08 at 03:59 PM |
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Idle speed too low? On the ZZR carbs there is a six inch long black cable (like a bike brake cable) with a threaded adjuster on the end. Try turning
that to increase the idle speed a little.
Mike
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mark.s
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| posted on 3/1/08 at 03:59 PM |
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quote:
Originally posted by dave r
or... if i am talking out of my backside, what do you think the problem is ??
dave
put the carbs back on the zx9 and install the whole thing, why do you o'l boys only do half the install
Happy new year dave
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dave r
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| posted on 3/1/08 at 05:04 PM |
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happy new year mark
thanks for your vote of confidence
have tried altering the idle speed... it seems to run smootest at idle with it near enough fully off, and when i screw the idle in it get progressivly
rougher running
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jacko
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| posted on 3/1/08 at 05:30 PM |
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Hi what size pinto is it IE 2l /1.6 / 1.8
i have a modified 2l and the jets are 1.7mm the air screws are one turn out there's a air hole that needs blocking
also what air filter are you using ?
if you do a search under my name you will find a lot of info if i can help just let me know
Jacko
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garage19
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| posted on 3/1/08 at 05:43 PM |
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Sounds like the carbs are out of balance.
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dave r
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| posted on 3/1/08 at 09:33 PM |
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its a 2l, with a slightly moddified head, and at the moment standard cam
so where is theis air hole ?
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jacko
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| posted on 4/1/08 at 06:00 PM |
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Hi Dave this is how bogg brothers set my carbs they are zx9r /e carbs
1 drill main jets to 1.7mm
2 fit two washers under the needle heads
3 turn the air screws out one turn
4 block the air hole that is in line with the needles looking from the air box side of the carbs
my engine is a 2l with
1 head skimmed by 1mm polished etc
re board to max
piper cam 285
light flywheel
zx9r/e carbs
it has 140bhp at the rear wheels that's on bogg brothers r/road
it has a modified dizzy from H&H ignition solution's
i hope this helps
try ringing Bogg Brothers they are very helpful even if you make your manifold like i did
Graham
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dave r
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| posted on 4/1/08 at 09:24 PM |
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thanks for that will have a look tommorow
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jacko
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| posted on 5/1/08 at 09:35 AM |
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Dave which model carbs have you got the
B /C carbs are different to the E carbs
i must advise you to get them set up on a r/road before hard driving
Bogg Brothers is the place to have this done
Graham
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dave r
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| posted on 5/1/08 at 11:29 AM |
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how do i tell ?
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jacko
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| posted on 5/1/08 at 12:05 PM |
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The E model have cvr on the end of the carbs + there round were the air filter fits
B/C carbs are oval were the air filter fits
I think it has CVk on the end
Graham
[Edited on 5/1/08 by jacko]
Have a look in my photo archives under zx9carbs and manifold
[Edited on 5/1/08 by jacko]
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dave r
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| posted on 5/1/08 at 03:41 PM |
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well mine are diffent to yours... mine are mikuni's
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dave r
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| posted on 5/1/08 at 06:32 PM |
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had a home visit from a mate this eve
sorted
all down to blocked idle jets
at least it runs ok now
hopefully have some weather to see how well soon
found why mine are diferent to yours jacko... mine are apparently zx6r
thanks to all for all your sugestions
[Edited on 5/1/08 by dave r]
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jacko
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| posted on 5/1/08 at 08:00 PM |
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quote:
Originally posted by dave r
had a home visit from a mate this eve
sorted
all down to blocked idle jets
at least it runs ok now
hopefully have some weather to see how well soon
found why mine are diferent to yours jacko... mine are apparently zx6r
thanks to all for all your sugestions
[Edited on 5/1/08 by dave r]
that may be it . Have a good ride
Jacko
[Edited on 5/1/08 by jacko]
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