550 freestyle ski....

9779 Views 12 Replies 8 Participants Last post by 81jetski, Jun 27, 2008

WaTeRhAwK

Discussion Starter · Jun 29, 2006

Does anyone have any older 440/550 skis they want to modify for freestyle?

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help

I have a 81 440 that i just put on new pistons and a 40 over 550 cylinder
performance exhaust, one problem thow, it will not run. is it possible i need
reeds in this engine now or something else. ign. intake gas compression ok
cant figure. can u give me any suggestions

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WaTeRhAwK

Discussion Starter · #3 · Jul 10, 2006

Well, There are no reeds in a piston port engine.

if it's getting good spark, fuel, compression, and it's timed right then it should start and run with no problem. There are a ton of things that could be keeping it from running...

too rich of fuel on the low speed needle flooding it out.

weak spark, not hot enough to ignite the compression.

Bad crank seals causing a case leak.

Bad fuel pump on the carb.

I really need to know a lot more about your setup to narrow it down, can you post a picture of your engine compartment and your carb(s)?

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Snackem

· #4 · Aug 23, 2006

WaTeRhAwK said:
Does anyone have any older 440/550 skis they want to modify for freestyle?

I do not have one yet however I know a gal that is selling two 550 kawis on a double trailer for $750. If I have not found a better deal (on a superjet or an X2) than that by this comming winter then I will purchase them. Any ideas on what kind of mods to do, I am thinking: Blowsion Kickers, a Pipe and maybe an Solas Impellar? any suggestions?

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JUST-IN-TIME

· #5 · Aug 24, 2006

550

#1 would be better carb if pre 91 ski and intake with arrestor
#2 ride plate/intake grate
#3 turn plate
#4 exhaust Mani and full or half pipe
#5 prop
#6 steering nozzle

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Snackem

· #6 · Aug 24, 2006

550 OCEAN PRO SLUT said:
#1 would be better carb if pre 91 ski and intake with arrestor
#2 ride plate/intake grate
#3 turn plate
#4 exhaust Mani and full or half pipe
#5 prop
#6 steering nozzle

Complete newbie question but what is the difference between the turn plate and ride plate? The ride plate is the same thing as the intake grate I assume, so what is the turn plate?

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adam.van

· #7 · Aug 24, 2006

The turn plate is what the handle bars mount to, and usually an aftermarket one will allow you to turn quicker than the stock one. A ride plate is the plate on the bottom of the ski in the back it is behind the intake grate.

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Snackem

· #8 · Aug 24, 2006

Thanks for the infor.

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JUST-IN-TIME

· #9 · Aug 26, 2006

Parts

adam.van said:
The turn plate is what the handle bars mount to, and usually an aftermarket one will allow you to turn quicker than the stock one. A ride plate is the plate on the bottom of the ski in the back it is behind the intake grate.

THANX MAN:thumbsup:

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sclocal_420

· #10 · Oct 10, 2007 (Edited)

i have a 92 550sx. help!!!!!! i wanna go faster

550 OCEAN PRO SLUT said:
THANX MAN:thumbsup:

how should i mod my 550?!?! i just got it, its all stock. i know i can get more out it, how?!?!

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JUST-IN-TIME

· #11 · Oct 10, 2007

sclocal_420 start a new thread

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Jawbreaker

· #12 · Dec 6, 2007

I have a 440 that I'll give you for a 12 pack. You just have to pick it up.

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81jetski

· #13 · Jun 27, 2008

81 440 problems

Im having the same problems as motobro45. I just got a 81 440 with a sized motor so I got a new/used 440 and I hav a PJS Inc. pipe coversion to make the exhaust come out on the right side below the water line. Also PJS intake grate and a aftermarket impellor. I have compression, spark, and fuel. But it wont even spudder

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