Modded FX-1 vs. Stock FX-1 ???

[dirkdiggler]

I have a Modded FX-1 and a pretty much stock FX-1.
There isnt a big difference in performance.....WHY???

Modded FX-1 Has:
- Factory B-pipe
- Westcoast head
- Boysen reeds
- 160 psi compression
- scoop intake grate
- Aftermarket prop (not sure what brand)
- Ocean pro rideplate
- ocean pro nozzle

Stock FX-1 Has:
- scoop intake grate
- 150 psi compression


1.) I dont understand why my modded FX-1 isnt blowing away my stock FX-1??
2.) Both have the carburators tuned proper also.
3.) Could the small 122 pump be the reason that all my modifications have such little benefits on performance??

 

[Matt_E]

You never solved your issues on the modded boat, did you?

 

[Lurker]

Its all about the pump. I have been riding a stock fx1 for three years and I was sure if i put a pipe on it or any other mods it would only make hook up worse where i wanted it to improve.

I am in the middle of a kawasaki pump conversion and I cant wait to finish. I know with out even riding it it will be a better up grade for this ski than anything.

 

[infamy]

i did not notice much performance gains when i modded my fx-1 until i put the bigger pump in it. i also didnt notice a big difference between a stock fx-1 with a stock pump and a stock fx-1 with a sj pump. i think you have to have the mods and pump together to really have the performance gains.

 

[Wave Chaser]

I rode a stocker for years and added both the FPP pipe and SJ pump this year.

IT IS A DIFFERENT MACHINE NOW. Faster out of the hole and top end and I have not even added an SJ pump shoe yet so it cavitates a bit on take off and am using a stock blaster prop.

Added a milled head after 2 rides which bumped it from 150 up to 175 and it was a little better hit but not really that noticable.