Kareh
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| posted on 17/12/05 at 07:13 PM |
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Jetting Bike Carbs
Does anyone know where to get jets for bike carbs, the only ones i've found are the dyna jet ones that are v expensive. The carbs are keihin
from a ninja
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zxrlocost
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| posted on 17/12/05 at 07:18 PM |
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HI!
most bike places do holeshot etc
do a search on google
there about 100 quid if I recall
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Surrey Dave
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| posted on 17/12/05 at 08:20 PM |
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Here:
http://www.allensperformance.co.uk/
Main are about £5 each.............
Its a lot cheaper to buy some micro drills and drill them progressively larger........if you need to go richer
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Kareh
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| posted on 17/12/05 at 08:31 PM |
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Thanks for the help folks. Hmm micro drills eh, which holes need to be drilled the jets are in 2 parts. There is a sleeve whith many holes drilled
through the surface into which fits a slotted jet with a hole in the middle. Maybe they all need to be drilled my knowledge of carb jets is limited,
as you can probably tell.
Thanks again
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Surrey Dave
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| posted on 17/12/05 at 10:22 PM |
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The sleeve with many holes is probably the needle jet.
The jet with screwdriver slot at the bottom of this under the petrol in the float chamber is the main jet............
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Kareh
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| posted on 18/12/05 at 05:45 PM |
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Fantastic. I see you've fitted a some bike carbs to your 1800 cvh which carbs did you use and what problems did you encounter?
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oliwb
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| posted on 18/12/05 at 11:20 PM |
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Hi, I'm at this stage aswell....How do you know when to drill it out and when not too?? (sorry complete novice with carbs!) Also where's
the best place to get some micro drills?? I tried looking in the screwfix catalogue and had a glimpse throught the machine mart one but
couldn't see anything.....Cheers Oli.
If your not living life on the edge you're taking up too much room!
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Kareh
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| posted on 18/12/05 at 11:37 PM |
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Oliwb-You can get micro drills from various engineering companies a set is about £20, do a search on google. I suppose if your engine is running lean
then you need to drill the jets out just a guess. I'm making another inlet fanimold at the moment should be finished in the next couple of days.
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Surrey Dave
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| posted on 19/12/05 at 12:55 AM |
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You can get the drills here:
http://www.drill-service.co.uk/
£1 - £2 each
140 main jet = 1.4mm
150 main jet = 1.5mm
155 main jet = 1.55mm.........etc
although there are exceptions to this rule I believe
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wment
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| posted on 23/12/05 at 12:04 AM |
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I remember from my drag racing days with 4bbl Holly carbs that drilling jets was a controversial issue. Jets are designed to flow a specific amount.
Two jets drilled to the same diameter will not flow exactly the same amount. If the drilling is done with a dull bit it could actually decrease flow
and act like a smaller jet due to the raged hole.
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malinovc
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| posted on 27/12/05 at 09:50 PM |
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Sorry for stealing the thread.
Does any one of you people who have R1 carbs on a 2.0 Zetec know what size main jet is best used. What do the BoggBros use?
My engine has a ported head and 273 degre cams.
Thanks!
Jan
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oliwb
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| posted on 27/12/05 at 10:18 PM |
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I would just give bogg bro's a call. That's what I did and explained what I was planning, what my engine was (1.6 pinto) and what carbs
ZX7r.....They advised around a 170 as a starting point....the main jets are the same thread size as webber jets so you should be able to buy them
direct to fit....Oli.
If your not living life on the edge you're taking up too much room!
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malinovc
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| posted on 28/12/05 at 10:47 AM |
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I was hoping I wouldn't have to call BoggBros cause I'm from Slovenia. So no info on 2.0 Zetec with R1 carb jetting from any one? It would
really save me the trouble.
Thanks!
Jan
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oliwb
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| posted on 28/12/05 at 07:11 PM |
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Sorry, but recon a phone call to Bogg Bro's would probably be the best bet. It's deffinately been done before....could try the westfield
or catterham forums. Someone there may know....Oli.
If your not living life on the edge you're taking up too much room!
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malinovc
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| posted on 28/12/05 at 07:52 PM |
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OK thanks, I'll try that then.
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