more bottom end power!

[osirisd390]

i have a stock 2008 super jet and want to know what impeller will give me more punch. i also want some opinions on what intake grates are the best and will work with the 08.

 

[BruceSki]

the stock 08 impeller is a pretty good impeller.
i actually put one in my 03.


i would go for an aftermarket pipe or mill the head/buy aftermarket head for more compression if you are looking for more bottom end.

those are the most bang for the buck bottom end mods you can do.

 

[Crab]

Sell me yours and get yourself a hooker.

 

[stanton]

Sell me yours and get yourself a hooker.

exactly!
you can get a nice hooker with an awesome low end with the money you make off the stock impeller.
lol

get rid of that stock exhaust ASAP!!!!!

 

[kevbo]

Get a pipe, bore your nozzle, and raise the rev limit a little.

 

[curt248]

I just met some racers that are using the 08/09 superjet. These guys are really good and one of the guys has been winning every race he enters at the national level. They are using worx intake and ride plates.

Is boring the nozzle only for 08/09 superjets or is it something that should be done on pre 08 rn's? What does it do for the ski?

 

[BruceSki]

less pump pressure with a bored nozzle which equals a bit more low end.

you do however lose a touch of top speed with this mod. its a give and take and used more as a tuning tool for a prop thats pitched just a bit too high instead of having the prop repitched.

 

[Big Kahuna]

IMPROS Hooker 9-15 on your stocker.

 

[Philip Clemmons]

Head mods make a huge difference on a stock ski.................I never would have believed it if I had not ridden the before and after of a stock ski with just a R&D head cnage (35cc pump gas domes) Night and day!

 

[SkiNaked]

Buy a factory B exhaust!!!

 

[osirisd390]

if i get the factory B exhaust do i need a Girdle Head?

 

[SkiNaked]

no. You can run any head with the b pipe.

 

[DC SUPERJET]

if i get the factory B exhaust do i need a Girdle Head?

It's a bit safer if you do, some people have had cylinder cracking issues with a non-girdled head.

 

[SkiNaked]

Not with a stock cylinder. Girdled heads have also not proven to stop cylinder cracking. Lots of debate on this.

With that said I still run one.

 

[osirisd390]

does anyone els have a opinion on this. Also would i have to do any tuning or just throw on the pipe and its good. im new to this and want to keep my sj as reliable as possible.

 

[SkiNaked]

You will more then likely have to rejet the carb.

 

[Polish jet pilot]

1. pipe + carb jetting + correct cooling line routing
2. nozzle boring + cone
3. rev limiter mod (disconnect)
4. Inatke grate
5. head (a/m or mill OEM)

And you will really fly.

 

[curt248]

What does nozzle boring and cone do?

 

[DC SUPERJET]

What does nozzle boring and cone do?

allows more h2o to flow through the pump resulting in more thrust