Nibbi carb

[Bakeman]

Anybody Try this carburetor the 21 mm ? Got the big bore kit with all the works . Thanks peeps .

[scooter7878]

My buddy has the 26mm on his 150cc it's good but I have a oko 21mm it's a flat slide the nibbi is a round slide. The nibbi works fine but I like the oko bc one if u looking for performance the oko is a flat slide which gives more instant throttle response and the oko has a plug in the bowl so you can change the jets without removing the bowl. The round slide carb is good a lot better than the cvk style carbs but not as instant as a flat slide and it does not have a plug so to change the jets u need to remove the bowl. The oko is 70 bucks I believe the nibbi is around the same. With either the nibbi or oko u need a different throttle cable. U need to measure the length of ur old cable and order a pwk cable in that length. Either carb will give u a huge difference in throttle response and power. I have a 50mm high compression piston and stroker crank with a big valve head I been looking to go to a 24mm instead of 21mm I believe it will be even better. If I was u I'd probably go with the 24 mm if u have a 50 mm piston or bigger. You will also need a 150 size intake manifold and a 48 mm air filter. One other thing is a big valve head not a big bore head will give a huge boost in power. With the bigger intake manifold u need a naraku intake spacer as the intake has a bigger port than the head which leaves a lip the air hits the spacer is tapered so it actually creates a forcing air flow into head it's like 15 bucks

[Bakeman]

Got everything. Thanks for your help.

[scooter7878]

They can be a little tricky to tune correctly any questions hit me up

[scooter7878]

Be sure u put the intake spacer on the right way the bigger side goes up to manifold and depending on ur head u may have to file the port on head where the spacer and head meet the smaller side of spacer and the port in head should be exactly same size as not to have a lip most heads besides the naraku have a slight smaller port so u need to file the head to match it to spacer

[Bakeman]

Thanks. I'll let you know how it goes.

[Bakeman]

Nov 25, 2021 13:45:38 GMT -5 scooter7878 said:

Be sure u put the intake spacer on the right way the bigger side goes up to manifold and depending on ur head u may have to file the port on head where the spacer and head meet the smaller side of spacer and the port in head should be exactly same size as not to have a lip most heads besides the naraku have a slight smaller port so u need to file the head to match it to spacer

[Bakeman]

Were can you get the spacer ? Looked on Amazon. Tia

[scooter7878]

www.partsforscooters.com/137-32-Naraku-Intake-Spacer