I had a 87 550 with the non reed, piston port motor. It had the Coffmans half pipe and a Mariner milled head. The cyl was ported and the rev limiter defeated. I had the old round body Mikuni 44 main jet drilled and it ran pretty good. It would outrun the guys with the 650 SJs back then. I bought my 94 SJ and it would run dead even with it in stock form. I think we clocked it at about 45 mph screaming its heart out. Lots O fun but it was like riding a 2x4 with an engine attached.:biggrin:
300/440/550 550's are fast!
- Thread starter DaUpJetSkier
- Start date
Shrivel
Requires therapy.
- Location
- Acworth, GA
keefer said:
I found that I could actually carve the 2x4 a bit better.
surfjetlouie
R.I.P. 11/27/2008
SFL do you have pix of Barby? if you do. you should post them also the other one the one I have put footholds in the racing purple. they where pretty cool ski.
Louie
Louie
Moondance
Just plain me....
- Location
- Ridin' the Crazy Train
ahhhhhh......the good ole days. Kinda makes one miss his/her youth. Wait, we're all still young:arms:All Stock said:
onesojourner
I use a thumb throttle.
- Location
- springfield, mo
I have a 550 with a pipe and my friend has a 650 sj. they are pretty close in speed. you cant even compare them when it comes to bottom end. the sj will rip your arms off compared to the 550s get up. the sj will out turn the 550 any day. I can drag my face through the water and ride it out. you cant do that on a 550.
- Location
- Corinth, TX
My first ski was an 89? 550 piston port. No title, seller was in middle of a divorce and didn't know anything about it. Turns out it was ported by dale's jet sports. When I got it, it didn't have the factory sponsons attached... that thing was scary! I got a box of parts with it and one day saw the sponsons in there and thought... "hmm those look like they would fit on the back of the hull"...Wow what a difference!
The ski eventually locked up... I think it was tuned for racegas, and the base gasket was THIN. I assume it had a big overbore. On 93 pump it would easily hang with my buddies stock 93 750sx. Man I miss that ski, it hit SOO hard on the bottom. It was lost in a barn fire in 2001. I hadn't ridden it in years by that point.
I'm now own a 93 SJ with the stock 650, B pipe, unknown impeler, grate and rideplate. it's fun but not anywhere near as brutal as that 550 was...Maybe someday
And I also own half of a pair of 73 JS400's one is a WSAA hull and the other is a WSAB. "V" hull and the standard "flat" hull. In amazing condition for being 30 years old.
Scott
www.ATSRacing.net
The ski eventually locked up... I think it was tuned for racegas, and the base gasket was THIN. I assume it had a big overbore. On 93 pump it would easily hang with my buddies stock 93 750sx. Man I miss that ski, it hit SOO hard on the bottom. It was lost in a barn fire in 2001. I hadn't ridden it in years by that point.
I'm now own a 93 SJ with the stock 650, B pipe, unknown impeler, grate and rideplate. it's fun but not anywhere near as brutal as that 550 was...Maybe someday
And I also own half of a pair of 73 JS400's one is a WSAA hull and the other is a WSAB. "V" hull and the standard "flat" hull. In amazing condition for being 30 years old.
Scott
www.ATSRacing.net
nikad58
1974 YZ 701
- Location
- 200 miles west of Havasu !
DaUpJetSkier said:
i thought i would just let you know... a stock 650 SJ went a amazing 36-38 mph !! Im thinking with a intake your slowed down just a tad also..
the WaTeRhAwK
fryin' up a/m electrics..
- Location
- okc
yeah butch, but they have the ability to jump out of the water from a dead stop with meager modifications compared to the 550 that has to have all kinds of crap done to it, and still doesn't have the active powerband until like charlie says "it's screaming it's little heart out" and has to have a 13 degree prop and a 440 pump to even get close to the holeshot the 650 sj has. :smile:
skiprincess
X-
- Location
- Lake Lanier, Georgia
skiprincess
X-
- Location
- Lake Lanier, Georgia
Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
trouble maker!!!!!!!!!! 
skiprincess
X-
- Location
- Lake Lanier, Georgia
trouble maker!!!!!!!!!!
It's only trouble if your willing to get sucked in...:wink:
What - did that look like an invite? Travis, Bueller?
most have heard of my lack of time this summer due to family issues...and my new experience with stock kawasaki ignition troubleshooting keeping one boat down...where is my new CDI coil Gordy?
but...when this here pink boat got tuned back in June, it did outrun a stock SXR. If I get my PJS T-3 motor ever running...and install the 440 after burner pump...I'm thinking it will be a contender for a mildly modifed SXR...but we will have to wait and see about that so don't hold me to it yet.
Sorry - intel's server wont let me post a picture of the pink ski....
most have heard of my lack of time this summer due to family issues...and my new experience with stock kawasaki ignition troubleshooting keeping one boat down...where is my new CDI coil Gordy?
but...when this here pink boat got tuned back in June, it did outrun a stock SXR. If I get my PJS T-3 motor ever running...and install the 440 after burner pump...I'm thinking it will be a contender for a mildly modifed SXR...but we will have to wait and see about that so don't hold me to it yet.
Sorry - intel's server wont let me post a picture of the pink ski....