25 to 35 hp Johnson Powerhead

[shawnfish]

Has anyone replaced their 25 hp powerhead with a 35 hp unit on a 2000 Johnson motor (jet).
I'm think of doing the swap if everything fits well.
I have the larger carbs already on it.

Thanks

not sure what hp's were available in 2000 but the 20,25,30 and 35hp motors all have the same powerhead and the different carbs and or manifold intakes dictate how much HP the powerhead produces for those models

Incorrect, you may be thinking of the 2 cyl model.
Thanks though.

sorry...I should have read the whole thread, didn't know you were talking about jet motors or 3cylinders.... and yes I was thinking 2 cyl models...

 

[rktman]

Quick update for future readers.
I swapped jet impellers from a 5 7/8" to a 6 1/8" and the 35 hp powerhead pulls it fine.
I can run 25 mph with 2 ppl up or down.
With just me and a small amount of gear I can hit 28 mph down and 26 mph up on a slow hole of water.
Now I'm fighting the infamous 3 cyl coil pack issue.