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 Post subject: Carb tuning....
PostPosted: Fri Apr 28, 2017 5:04 pm 
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Joined: Wed Oct 13, 2010 2:55 pm
Posts: 1233
Location: Southeast England
Country: England
Bikes owned: TS100, T200, GT250, T500, GT500, GT550, GT750, GS750
Hello guys....I'm planning to fit some Taiwanese Okoe carbs to my mildly ported T500M. The carbs are 34mm, and are a copy of the Keihin flat/D slide unit.
I shall be using pod filters, but have absolutely no idea what size jets I should be using, or where to start.
Do any of you have experience that you could share?
Thanks in anticipation....

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 Post subject: Re: Carb tuning....
PostPosted: Sun Apr 30, 2017 2:34 pm 
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Location: Southeast England
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I really like the look of these carbs, and they are nicely made. I have fitted them to my T500M using the early short inlet manifolds. I hope I can get them to work....they come with a couple of spare jets, but none of them have any sizes stamped on them, which isn't very helpful...

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 Post subject: Re: Carb tuning....
PostPosted: Sun Apr 30, 2017 4:23 pm 
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Joined: Tue Dec 16, 2008 11:37 am
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Location: Trowbridge UK
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Bikes owned: T500R, SV1000S, TS125, Seeley T500
Stealth Jets :D .

That's pretty unusual, do you have a source for alternative OEM jets?. Whoever sells them might be able to tell how to find/read the jet size.

Cheers Geoff


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 Post subject: Re: Carb tuning....
PostPosted: Sun Apr 30, 2017 4:55 pm 
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Joined: Mon Dec 13, 2010 4:32 pm
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Location: southwestern Pennsylvania
Country: USA
Bikes owned: 69 T350 thru 75 GT750
Was a bit curious & found a US retailer of Okoe carbs.
http://www.mid-atlantictrials.com/oko.html

They have a page comparing their gunuine Okoe carbs to Chinese copies.
Per that, its the Chinese copies that have unmarked jets.
http://www.mid-atlantictrials.com/Copies.html

Sorry for the bit of bad news.

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 Post subject: Re: Carb tuning....
PostPosted: Tue May 02, 2017 11:56 am 
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Joined: Wed Oct 13, 2010 2:55 pm
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Location: Southeast England
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Bikes owned: TS100, T200, GT250, T500, GT500, GT550, GT750, GS750
Thanks JAB......no worries, they were very cheap. Funny thing is, that I thought the Okoes were a copy of the Keihins, so are mine a copy of a copy?.....
Fortunately, the jets are the same as the Keihins, and are readily available (with sizes on). I've ordered a selection of main and pilot, and we'll see how we go.
I had read Midatlantic's useful guide on setting the up as it goes ![*]Image[*]

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