Freestyle Best mods for 701 Bottom-End only Flatwater Freestyle

dcptr

dcptr

Location
Australia
Hey guys just in the process of building a flatwater freestyle ski from my 2010 Superjet..

Built up a new hull from the SJ in carbon, cut back 400mm and brought up the rocker an extra 150mm! Hull weighs a tad over 20kg ;)

I want to try and make this a good flatwater hull without going big bore so just want to know what other mods would be worthwhile for bottom end only..
still have to decide on a new prop and pitch but also considering a mag pump w/trim, specific for the engine mods I end up doing..

Here is a list of mods that I've already done!

701 Ported for bottom end freestyle only
ADA Head @ 190psi
TBM II Lightweight Flywheel
Factory Pipe Limited Chamber
MSD Enhancer
Tauceti flame arrestors on 38SBN's
Vforce2 reeds on epoxied Intake

So for engine-wise first, what mods would make the biggest bottom end boosts?
Bigger carbs? ATP Ignition? and small things like light-weight couplers, pump cone?

On the pump end.. what pitch prop on stock pump would go best, if not a mag pump (140-146mm on what pitch too?)

Any comments or suggestions would be greatly apprecited.. will soon follow up with pics too!!
 
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Polish jet pilot

Polish jet pilot

4aces4aces4aces4aces4aces
Location
Warsaw, Poland
can we see a pic of the hull?? It seems you have a nice package, not sure what you want to do (tricks) but a 20 kg hull should do everything with that motor...and proper wake setup...
 
Matt_E

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
Total Loss
More compression
Mag pump
Have someone that knows what they're doing tune it all in unison.
 
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kevbo

kevbo

Location
dfw
Tune your engine to make as much power as possible and tune your pump to hold the engine at that rpm. All the other parts wont do you much good if you cant master this concept. The outlined setup should have good throttle response but be limited on power and thrust.
 
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dcptr

dcptr

Location
Australia
Ok thinking about selling ignition setup and going total loss, also enquiring about a 144 mag pump.. not sure what pitch tho yet..

kevbo: im a gun at tuning and i also have the master of 38sbn tuning not far from me that always helps out.. nobody can tune 38's like link (ex-racer) spoke to him today and he said nothing will compare for bottom end responce with those carbs and his tuning capabilities!

Now what is involved in tuning the pump to hold the engine at a specific rpm you say? ..this is one thing I have'nt heard of..

Pics will go up in the next week or two!
 
Quinc

Quinc

Buy a Superjet
Location
California
Old thread but had to bump it because this SJ looks nuts and only 44lbs!

img3575o.jpg
 
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