300 carb settings uk

Jetting, Reeds, Air Filters, etc.

Re: 300 carb settings uk

Postby Ptssmith » Mon Jul 28, 2014 2:01 pm

To be honest i asked i asked one of the dealers over here and that was what he sent me.
I may try some other jetting on the bike but it does seem to run better using the ones he sent.
What are you running GMP?
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Re: 300 carb settings uk

Postby GMP » Mon Jul 28, 2014 9:01 pm

Stock jetting, for US bikes anyway. 35p, N2ZJ#3, 165M, AS 1.5. I'm just curious why yours is so different, fuel maybe? For GGs this variation was the norm as tolerances were loose, but every Beta seems to like the same jetting or corrected by the chart.
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Re: 300 carb settings uk

Postby Hubert Carpet » Mon Jul 28, 2014 11:36 pm

What is the octane rating for US pump gas? In the UK the standard unleaded is 95 and "Super" is 97.
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Re: 300 carb settings uk

Postby Ptssmith » Tue Jul 29, 2014 12:12 am

GMP wrote:Stock jetting, for US bikes anyway. 35p, N2ZJ#3, 165M, AS 1.5. I'm just curious why yours is so different, fuel maybe? For GGs this variation was the norm as tolerances were loose, but every Beta seems to like the same jetting or corrected by the chart.


I was running 38p, N2ZJ#3, 168M, AS 1.5. It ran well with those settings, what is the difference in the N2ZW and the N2ZJ needles?
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Re: 300 carb settings uk

Postby GMP » Tue Jul 29, 2014 4:41 am

N2ZJ is one dia leaner than N2ZW.
Our fuel rating system is different but fuel should be close. We have 10% ethanol in most fuel so if anything we should run leaner if you have straight fuel with no oxygenates.
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Re: 300 carb settings uk

Postby Mxdave » Mon Jul 27, 2015 6:02 am

Ptsmith you still liking that jetting settings? I got the same jets a year ago and still not fitted as I'm finishing stock fine. Was gonna try the new ones for the fun of it.
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Re: 300 carb settings uk

Postby NZMarkb » Tue Feb 16, 2016 2:35 pm

Hi All
Does any one have any jetting settings for the new 16 300 race edition
Should see my new bike any day now
:) :)
Last edited by NZMarkb on Thu Feb 18, 2016 6:29 pm, edited 1 time in total.
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Re: 300 carb settings uk

Postby Gibnut » Thu Feb 18, 2016 4:43 pm

NZMarkb wrote:Hi All
Does any one have any jetting subjections for the new 16 300 race edition
Should see my new bike any day now
:) :)


A lot of 300 riders are onto NECJ #3, 35p, 165m, a/s 1.5.
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Re: 300 carb settings uk

Postby NZMarkb » Thu Feb 18, 2016 5:10 pm

Thanks mate
:D :D
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Re: 300 carb settings uk

Postby Justsam » Sat Mar 12, 2016 5:24 am

Stock needle and position. 170 main 38 pilot a/s 1.5
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