2020 mercury pro kicker 9.9 to a 15 HP conversion carb. #jonboatlife #boating #mercury #jonboat

[lifewiththehamptons]

There’s a huge difference.
15hp carb has twice the CFM over the 9.9hp carb.
If you would have turned them around and looked at the exhaust side of the carb, you would have seen the 15hp carb tunnel is nearly twice the size of the 9.9.
Other than the much larger tunnel in the carb, the main jet is the only thing different. It’s a much bigger fuel jet than the 9.9hp.

[nrxhavoc]

the difference is in the jets in the lower portion. Bigger to let more fuel through

[BobLoverStevens]

Do you know the serial number for the 15 hp carburetor? Thank you.
I’m trying to buy one

[weekenddangler]

Sounds like it's missfiring,
Check the plug.

[gingluong]

Please add the link or the part number for the 15 carb.

[chadparkermusic]

I hate to be asking the same question twice but just to clarify did you pick up 2 to 3 mph with nothing but the carburetor change? Is this before you ever changed props?

[RaymondBmwrrt]

Do you need also a 15hp prop, or not?

[AGuyFromHazard]

I have a 2004 Merc 9.9 with 323cc of displacement. Pretty sure the carb swap would grant more HP on mine. Tho swapping in larger jets would probably be cheaper and guve the same results if the intake of the carbs are the same. Anyone know where i can get the 15 HP carb or jets?

[Jaquan-yl]

Can i swap my mercury 50 corb with a 90

[mikenetherlin]

Great job man you do great work I like watching your videos.

[Prodbykanekt]

hey, our 9.9 is now running rich after installing this carb. keeps fouling spark plugs and they’re wet. is there a way to adjust these? i contacted the company but didn’t hear back yet. thanks

[iboats]

i bet You didnt get more hp. 15hp has bigger displasement( over 300 cc). this block has 209cc

[indianapublicland]

You would have gotten the same results with just the prop the carb does nothing!!!

[d_brown]

Notice any top speed difference ? I have the exact same 9.9 and I want some more speed