OKO Carb Tech Update

[bulldogfallon]

DRR has posted an upgrade to get rid of that OKO bog...

http://www.drrinc.com/new_page_18.htm


DRR Wizard broke the news on another post so he gets the credit for the announcement

I had access to the forum so I figured I would post it

[forgiven]

Should we all do this? Is this just for the 50's?

Nice instructions btw

[bulldogfallon]

For all of the OKOs I believe....

The air screw opening is so small it is non existent.....The new hole is huge.....

I will have test results this weekend.....

[ecmini1]

Im wondering now if it does apply to the 24mm aswell.
This is great info. We usally run kehin anyway but good to know. This is another reason DRR is a great company always listening to the customers concerns and finding a solution.

Thanks Bulldog

[bulldogfallon]

On the 50s you may need to try a smaller main jet....

Every bike and area likes a little something different.

The 120 was the main jet for a 70cc quad with a high compression head.


All the credit for the info goes to DRR Wizard not me

[drr wizard]

Originally posted by bulldogfallon
For all of the OKOs I believe....

The air screw opening is so small it is non existent.....The new hole is huge.....

I will have test results this weekend.....

your right gary, the original hole is so small you would think it would not run at all, but the .029 drill bit is pretty dang small too. I have only had 1 of the 24 mm oko in the shop and it did not have this issue , so it may be only the 21mm that needs this mod. If anyone finds out some of the 24mm need mod please post. thanks

drr wizard

[forgiven]

With all the issues the 50's were having that sure sounded like a likely culprit, but I am curious if any starts playing with their 24. I am not adverse to getting more for a little drilling and PJ.

[Nichols Atvs]

i have a 24 I think needs to be drilled out it has a bad bog in mid range i just need to find some bits.

[ecmini1]

Thats more of a jeting issue in the mid range. Bog in question is out of the hole or off idle throttle responce.

[drr wizard]

CONVERSION HELPER; the bit sizes needed are #40 and #69 when you go to purchase
this will make your search for bits easier. I think ecmini is rihgt about the 24 , it sounds like your pilot jet is to small . If a larger pilot does not help it then investigate the pilot passage, it may need cleaning or drilling .
drr wizard