OKO carb

[brianfulcher15]

got my OKO carb in today, and have some questions about it.

THe jets that came with it have no numbers on them. Does anyone know what size jets come with these carbs?

its also only has 2 bolts holding the bowl on. seems odd, is this how everone elses is?

 

[pittboss45]

Not sure where you purchased that carb from but all the jets should be numbered and there are only 2 screws to hold on the bowl.

 

[Awk08]

there was just a good thread this past week about these carbs, slickerthanyou and someone else, i forget, but do a search for that carb, or go to slicks profile, click "show all statistics" then "all posts" and see what thread he was involved in for it.
and all jets should have numbers, either get out the magnifying glass, or throw them out and get yourself some GENUINE keihin jets in the sizes listed in the thread you find

 

[brianfulcher15]

it was off ebay, im kinda sketchy about useing the jets now. becuase i have never seen any jets with out the numbers. The carb looks right though.

I was looking on jetsrus to try and just order a kit, but cant figure out what jets to get. I know it can use the kehnin jets but need to know what the equliviant model number is for the carb.

 

[Whitty21]

the oko carb uses the keihin pwk hex jets

 

[brianfulcher15]

ok, got my new jets in today, got a major issue. when i screw the pwk jets into the neddle jet holder it creates a clearense issue with the float bowl. The original jets i have are much shorter than the new keihan, so basically i need a new neddle jet holder. What type of jet holder will work when the keihan jets?

 

[sicivicdude]

Take some pictures of the carb and float bowl.

I have an OKO 30mm carb and it uses all of the parts from a keihin pwk28 including the 6mm hex jets. Unless you have a different series, they should work.

 

[brianfulcher15]

im pretty sur its the right pwk 6mm parts, im thinking that since they were crapy jets with no numbers to start with that the ebay seller just pieced some crap togather.

 

[brianfulcher15]

heres some pics compairing the two

 

[brianfulcher15]

here is a picture of the entire carb

 

[brianfulcher15]

could someone post a pic of the neddle jet holder up so i can see if it looks shorter than the one i currently have.. its going to cost me 20 dollars to buy one from jetsrus with shipping but if its not shorter than what i currently have i'll just be screwed out of even more money.

this ebay seller definitally got some neg. rep.

 

[brianfulcher15]

here's a picture of the jet holder i currently have thats too long.

are the ones you guys have shorter?

 

[sicivicdude]

That's what mine looks like. What does your float bowl look like? Does it have a big nut in the middle that you loosen to remove the float bowl and access the main jet?

 

[brianfulcher15]

yea thers a big nut, but its not very deep, and when you look at my other pictures you can see how the main jet sticks out though it.

 

[brianfulcher15]

anyways i ordered it off jetsrus so we'll see if its any different. if it wont work idk what i'll do....

 

[brianfulcher15]

That's what mine looks like. What does your float bowl look like? Does it have a big nut in the middle that you loosen to remove the float bowl and access the main jet?

when you screw your main jet in does the hex part go down into the hex part of the jet holder, or does the hex part of the main stop once it meets the hex part of your jet holder

 

[slickerthanyou]

here is a picture of the entire carb

That looks way different than mine. The bore on yours looks good, mine looks like it was machined out. That main jet holder is different, than what came in mine. I will take a pic tonight and you can compare. I purchased mine from CPW, on ebay, just a biotch to jet .

 

[slickerthanyou]

Just noticed something, that holder takes the smaller main jets 393 series - here is a link to them-http://www.rockymountainatvmc.com/productDetail.do?navType=type&webTypeId=80&navTitle=Intake%2FFuel&webCatId=16&keyword=MAIN+JETS&prodFamilyId=25596

 

[brianfulcher15]

well, if the new holder i ordered doesent work ill order the smaler jets

 

[sicivicdude]

Ok, those look like Mikuni main jets... installed with a flat blade screwdriver. The pilot jet looks just like the keihin jet though. Down right strange.

I see another problem too... The nipple on the engine side of the carburetor, is it open to the bore? That's for oil injection or a fuel pump, neither of which you should still have. That has to be blocked off.