300/440/550 Sealing up a 550 for subs and surf riding

[2-Stroke Guru]

Hey guys, just curious what you all reccomend me to do to my ski to make sure it can handle the abuse I'm about to give it. It is a bone stock 1990 550SX, and I plan to really throw this thing around. I was thinking of possibly relocating the scoop on the hood? Maybe putting in some aftermarket bilges? Footholds/Straps? Let me know what you think will work and most importantly keep water out of it. For what its worth, I'm a motocross rider and I have never ridden a stand up before.

 

[Laserman]

There are many threads in the MY SKI or SKI BUILDUPS section that show what can be done to these skis.

If you plan on all-out surf-type abuse you can consider the following:

Footholds.
Gutting the ski and re-inforcing all the stress areas with bi-ax or carbon fiber.
BULLDOG nose brace.
Pole limiting strap.
Electric bilges.
Lanyard system.
straight bars.
Quick-turn system.
Re-locating the air scoop to point backwards.
Hood lock-downs.

That's just off the top of my head.

 

[King of the Js550]

Your like me coming fromm the dirt bikes world well welcome. First learn how to ride the thing your not going to be able to throw it around the first ride, Your going to have to get use to how it handles took me a few ride before i could stand up and turn.

As of the mods You need to upgrade your motor its going to struggle in the surf not enough power stock.

:repost:
For the hull/body

Reinforce the inside of hull and hood add layers of fiber glass or carbon fiber and epoxy
Foot holes
hood straps
Air scoop backwards
beef it kit
pole limit rope
Electric bilges
Lanyard kill switch
Straight bars
Quick-turn plate
tubbie side sponsons
bigger nozzle
skat trak i dont know what pitch for surf need to do a search

Motor

port cylinder
high compression head
Lightened flywheel / Best bet total loss kit
upgrade Ride plate
upgrade intake grate
Full pipe,exhaust manifold, waterbox
boyesen reeds
snb 44 carb with filter
upgrade Intake manifold
flush kit
dual cooling

:usa:

 

[Hfurll]

hood

i have a hood which will aid in your water problem....

150. shipped ( US)

 

[zeke6785]

ok guys he is talking about like complete surf abuse. What if I wanted to take my 550 out in the surf jsut to ride and jump some waves. Maybe a nosestab here n there or a sub ro 2 but no flips or anything right now. Could that be done with a stock ski and if not what should I get for bare minimum surf riding

 

[Tyler Zane]

bare minimum surf riding

gas, 2 stroke oil, helmet.... o and dont let go if you dont have a lanyard s/s switch

 

[crazy4sand]

your just like me 2 i have been on dirtbikes my whole life this year i started rideing skies.. got into it pretty fast best bet ride surf a few times and you'll fall inlove put ur dirtbike in the back of the grage and start building a surf boat!

at the least a lanyard and a bildge and just DONT let go

enjoy!

 

[Polish jet pilot]

get some tubbies for the front - the ski will handle amazingly in the surf. And something to get water out (2 x 1100 bilge). D cut ride plate if you light. Mill head. Bore nozzle by 2 mm. Those are pretty "free" to do.