Omc 25 H.p.-carb Velocity Stack-

[DonChichoJr.]

Hi., Does Somebody Know Where To Get A "carb Velocity Stack" ,for Omc 25 H.p., Cross Flow, 2 Cyl., Stock Carb. .

Thanks,
Don

[Skoontz]

You can make one by looking at old Honda or Kawasaki in line 4 cylinder hypo parts. Any time someome added biggers carbs, they had open velocity stacks with molded screening in the front. Or, you could make one out of a hunk of 1 1/2" to 2" aluminum tubing. They look fun but don't count on any HP gain from one.

[DonChichoJr.]

Thanks . I Will Check !

Don

[JohnsonM50]

Thanks . I Will Check !

Don Ive tried a few home made ones, no noticeable increase on the same basic motor. If your timing is 34 degrees you could try retarding it a little at a time but if your not using a tach or gps you wont really know.