Bigger motors in a 550 Hull

durhamgoat

durhamgoat

Location
Jasper IN
Google conversion ski and you will find a bunch of builds including mine. I should mention Rhaas products conversion ski kits and soon to be released 750 pump adapter kits so you can run a 140mm 750 kawi pump in the 550 without having to do any glasswork.
 
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88X2RIDER

88X2RIDER

J-Fly
Location
dartmouth,ma
durhamgoat said:
Google conversion ski and you will find a bunch of builds including mine. I should mention Rhaas products conversion ski kits and soon to be released 750 pump adapter kits so you can run a 140mm 750 kawi pump in the 550 without having to do any glasswork.
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that sounds sweet !! about the new kits !!! . because i was thinking if I'm going to do a bigger motor what good is a stock 550 pump going to do lol but thanks man some helpful tips are ready ! lol this will be going into my Note book on the build and yes i check out that site very cool some good deals on some stuff and i like how they did the conversion plate for the 550 bed pan for the bigger 650 and up motors Very well designed adapter they did ..
 
Midlake Crisis

Midlake Crisis

Site Supporter
Location
Bakersfield, CA
Quinc said:
Save your time and money and buy a Superjet. Fx-1 or a/m ski.
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Maybe if you have a chunk of cash to drop and want big performance, but I think the conversion skis are a hoot. I have had as much fun on my 650sx over the last year as I have on any of my skis, just with my tray mods / holds, pipe & carb upgrade. I would love to drop a ported 701 in it. .. . .as a matter of fact I just might!
 
88X2RIDER

88X2RIDER

J-Fly
Location
dartmouth,ma
Midlake Crisis said:
Maybe if you have a chunk of cash to drop and want big performance, but I think the conversion skis are a hoot. I have had as much fun on my 650sx over the last year as I have on any of my skis, just with my tray mods / holds, pipe & carb upgrade. I would love to drop a ported 701 in it. .. . .as a matter of fact I just might!
Click to expand...

kawaski all the way !! only Yamaha i own is MY banshee and dumped to much into the motor and now it just sits there because i rather be on a Free style Ski now lol way more Fun My motor cross racing days are over Time for some FUN
 
durhamgoat

durhamgoat

Location
Jasper IN
It really depends on what you want to do.
I have several 440's and a 750 conversion that had a 550 pump now waiting on the new pump kit for this summer, I also have an AM kawi/dasa based ski that has backflipped (not by me yet:(). I like riding them all and they are all fun for different reasons.
If a backflip or barrel rolls are in your future then aftermarket all the way.
If you like wrenching and gathering parts for a build and like the twitchy ride of a 550, then the conversion is for you. They are very fast and kinda sketchy at 50... but a blast to ride. The hulls are so narrow and and weigh little so the power to weight ratio is great. There are alot of good builds posted you can use as a guide so you are not really in uncharted waters so to speak.
If you don't want to build a ski then the FX-1 or superjet are good options.
 
smokeysevin

smokeysevin

one man with a couch
Location
Houston
How much work would it take to stuff a kawasaki 900 into a 550? My 550 motor is a little long in the tooth and I was given a complete but disassembled 900 tripple, exhaust and all.

Sean

Sent from my D6616 using Tapatalk
 
Quinc

Quinc

Buy a Superjet
Location
California
smokeysevin said:
How much work would it take to stuff a kawasaki 900 into a 550? My 550 motor is a little long in the tooth and I was given a complete but disassembled 900 tripple, exhaust and all.

Sean

Sent from my D6616 using Tapatalk
Click to expand...

With enough glass work you could do it. Otherwise I dont think the pipe will fit.
 
smokeysevin

smokeysevin

one man with a couch
Location
Houston
Thanks gents, that is what I thought. I will probably end up gutting the hull, setting up the rear exhaust, and doing the tray first.

Sean

Sent from my D6616 using Tapatalk
 
88X2RIDER

88X2RIDER

J-Fly
Location
dartmouth,ma
durhamgoat said:
It really depends on what you want to do.
I have several 440's and a 750 conversion that had a 550 pump now waiting on the new pump kit for this summer, I also have an AM kawi/dasa based ski that has backflipped (not by me yet:(). I like riding them all and they are all fun for different reasons.
If a backflip or barrel rolls are in your future then aftermarket all the way.
If you like wrenching and gathering parts for a build and like the twitchy ride of a 550, then the conversion is for you. They are very fast and kinda sketchy at 50... but a blast to ride. The hulls are so narrow and and weigh little so the power to weight ratio is great. There are alot of good builds posted you can use as a guide so you are not really in uncharted waters so to speak.
If you don't want to build a ski then the FX-1 or superjet are good options.
Click to expand...
durhamgoat said:
It really depends on what you want to do.
I have several 440's and a 750 conversion that had a 550 pump now waiting on the new pump kit for this summer, I also have an AM kawi/dasa based ski that has backflipped (not by me yet:(). I like riding them all and they are all fun for different reasons.
If a backflip or barrel rolls are in your future then aftermarket all the way.
If you like wrenching and gathering parts for a build and like the twitchy ride of a 550, then the conversion is for you. They are very fast and kinda sketchy at 50... but a blast to ride. The hulls are so narrow and and weigh little so the power to weight ratio is great. There are alot of good builds posted you can use as a guide so you are not really in uncharted waters so to speak.
If you don't want to build a ski then the FX-1 or superjet are good options.
Click to expand...


Hell yea that's what makes jet skis so much fun to me is getting all these parts to make a sick ass ski , and i wont be doing 50 mph any ways i like free style and rippin in the surf AKA Free Riding is what i call it ,, but yes i seen a 550 with a 800 motor and the thing was just sick for free style ,, the 550 hull is going to be a full Mod will widen the front a little by adding them Tom Tubs on the sides . but like i said that ski will see the waters next year since i just got the hull . My X2 is almost down now so ill will be riding that and working on the 550 hull on the side ..
 
D

DC1

Location
Saginaw, MI.
Newbie here.... I've been out of the game for a while (my last race was on a 95' SuperJet Limited class) but a came across an old stock 440 and couldn't resist. I would like to drop in a motor that comes out of the corners hard (low-end), I'm not as concerned with top end speed. Any suggestions which motor to go with? In addition, I like to pipe in the exhaust and the bilge like the newer JS550SXs had.... any suggestions? Thanks.
 
C

chevota84

650's are easy to find and been done a million times. A good running 650 is about all a js pump will be happy about. I have a 650 with a Westcoast pipe and a 44sbn, pretty amazing compared to a 440 or reed 550 (only other js's I've been on). It still doesn't come out of the water as hard as my buddies stock 650 square nose.

Sent from my SM-G900V using Tapatalk
 
D

DC1

Location
Saginaw, MI.
chevota84 said:
650's are easy to find and been done a million times. A good running 650 is about all a js pump will be happy about. I have a 650 with a Westcoast pipe and a 44sbn, pretty amazing compared to a 440 or reed 550 (only other js's I've been on). It still doesn't come out of the water as hard as my buddies stock 650 square nose.

Sent from my SM-G900V using Tapatalk
Click to expand...
That sounds perfect, thanks for the tip
 
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