tyrewise
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 posted on 17/7/14 at 08:39 PM |
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zx9 carbs on 2.1 pinto
Hi Guys
Help HELP HELP ???????
just bought some zx9 carbs from ebay to bolt on my 2.1 pinto, got the manifold from danstenginnering fantastic job by the way, but now what have
fitted everything on inc zx9 fuel pump, jet size ????? I am a total novice so need help I am very mechanically minded but this is one step beyond me,
I am running a fast road dizzy with uprated coil have the carb piped up correctluy but on starting the car get dusting through the airbox an popping
through the exhaust I think I am running far to lean please help
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blakep82
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| posted on 17/7/14 at 08:45 PM |
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If this is just starting and idling, then you won't be in the main jet region yet!
Idle air screw adjustment is where to start
Have a read over this for a starting point
http://www.classicfordmag.co.uk/2011/07/15/the-definitive-guide-to-bike-carbs/
[Edited on 17/7/14 by blakep82]
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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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tyrewise
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| posted on 17/7/14 at 09:21 PM |
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Idle is extremely lumpy at the moment but the carbs are completely standard timing us at 8 degree? ?????
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blakep82
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| posted on 17/7/14 at 09:39 PM |
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Have a look at this chart here, it shows you which adjustment areas affect what throttle range
I suspect you may need to start with locating the air screws, screw them all the way in, then out by 3 turns (as a starting point) then balance the
carbs.
Once thats done so you get a reliable idle, Main jets on a 2.1, as a rough guide, 1.7-1.8mm? But depending on what zx9 carbs you have, they may
already be about there.i think my zx9r e1 carbs have 1.65mm jets already, which is about what I need
Idle air screws and balance to start with though!
________________________
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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19sac65
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| posted on 18/7/14 at 03:23 AM |
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One other thing - have you connected the choke !
Numerous people on another forum missed this one and they wont run cold without
Ive got a zetec running on 1.8 mains that seems quite happy,pintos are a little more greedy but see how you go initially
As blake says itll run on pilot until you start revving anyway
I got a decent balance on mine by using mig wire or similar under the master carb butterfly so that it just rubs,like a feeler gauge then adjust the
other carbs the same
Got it almost perfect that way and balancing makes a huge difference
Theyre a bit of a faff to start with but great once done
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tyrewise
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| posted on 18/7/14 at 05:09 AM |
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Thanks guys gonna try some things today need to get some 1.8 jets I think
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tyrewise
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| posted on 18/7/14 at 05:21 AM |
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Can anyone confirm the correct ignition timing for the 2.1 pinto
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snapper
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| posted on 18/7/14 at 05:52 AM |
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Timing is more to do with cams than capacity
Try 10 and check timing is 36 @ 3,600rpm with vac off for testing
What are your idle revs?
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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19sac65
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| posted on 18/7/14 at 10:26 AM |
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Dont buy jets yet
You could end up buying loads
Buy a few drill bits 1.8-1.9-2.0
Drill them out till its running the way you want it , then buy a set of jets in the size you last drilled it to
Make sure timing,balance etc are ok before you start
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