650/X-2 craigslist...

Vumad

Vumad

Super Hero, with a cape!
Location
St. Pete, FL
http://www.bgsoflex.com/displacement.html
650sx --- Stock bore X stroke = 76 x 70 = 635cc
SXR800 --- 82 x 74 = 781

For a 650 to be punched out to 781 CC, it would need 84.5mm pistons, or 8.5mm overbore.

You can't punch a 650 out to 800. There is an old PJS super cylinder that would make the 650 into a 800. I'm not overly familiar, but that looks like a stock cylinder with a head on it.

http://www.groupk.com/restof650k.htm
Big boring a 650 cylinder to anything near 750cc is obviously not doable. Installing the longer stroke 750 crank in the 650 cases is also not doable (won’t fit), and installing the 750 cylinder on 650 cases is a setup wrought with lots of undesirable technical compromises.
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To answer your question, there is no reason to do something like this today. PJS made the cylinders before the 750 came out. Kind of like the 800cc 550based triple motor they once made. Valuable then, not valuable now, except to a collector. From a practical stance, install a 750, preferably a 750BP or 800.
 
Vumad

Vumad

Super Hero, with a cape!
Location
St. Pete, FL
i have a 1992 kawasaki 650sx standup jetski for sale. has 800 big bore kit in it, west coast pipe, extended ride plate, intake grate, pole spring, stainless prop, mariner dual cool head, high flow intake. runs good, but having some cooling issues. will run all day on the hose, but when put in the water it overheats after about 10 minutes. according to some of the research i've done, it just needs the dual cooling mod done to it. you just tap another cooling hose to the pump and separate the engine and exhaust cooling with the westcoast recommended hose routing (on their website). its about $10 worth of hardware you can get at home depot. i just dont have time to do it right now. have a bunch of spare parts including 2 spare motors (1 blown and 1 usable), prop, exhaust, stator, shaft, pump, and more. 1200 cash or make me a reasonable cash offer....email or call/text 484-686-four seven four one. i have all paperwork for it to be legal.
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original ad has pictures.
 
Pnutt

Pnutt

From( Jet Punks ) Texoma
Location
oklahoma
I love how every used 80's pos jet ski owned by some one who thinks it is a frestyle jet ski wants $1200 for their $300 ski.
 
Pnutt

Pnutt

From( Jet Punks ) Texoma
Location
oklahoma
that price is firm ! no one cares that you paid $1000 for a paint job and hundreds of dollars on pads and bars. your ski is worth maby 600$ if it has a title and $400 with out. even in perfect condition.
 
mthomps

mthomps

Location
Cleveland
My favorites are the 1000 dollar untitled 550's that "just need a battery"

Anyone in need of a 3200 dollar sxi pro? http://nh.craigslist.org/boa/3692848806.html

1998 sxi pro, In excellent condition with very low hours, always stored in heated garage. Built as a back up race ski with no expense spared when built. aluminum handle pole,UMI steering and bars,Factory pipe exhaust with ecwi,, Billet Buckshot carbs(47MM) Carbon fiber flame arrestors and reeds,milled head,Multi point cooling and bypasses, hull has been weighted and trued,Skat impeller, R&D intake and ride plate. Garage dolly included.$3200. Call 603-315-1659
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mthomps

mthomps

Location
Cleveland
I scan craigslist daily just for laughs. Anybody need a 91 superjet? Freshly built motor with 135psi per hole? Only 3k! http://batonrouge.craigslist.org/boa/3719552346.html

Freshly Rebuilt 1991 (square nose) Yamaha Superjet with rebuilt trailer for sale. New everything! NEW battery, bilge pumps with switch on deck, intake grate, ride plate, aluminum handle pole. New Blowsion deck mats, rub-rail, nose and sponsons! Engine rebuilt last year (135lbs per cylinder)! Fresh paint and other cosmetic touches! Great Ski for all around use and is very reliable! Trailer has new tires, wiring, lights, paint, jack, and tongue. Email for more pictures. Ski is located in Baton Rouge
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SUPERJET-113

SUPERJET-113

GASKETS FOR CHAMP BRAP!
Site Supporter
Location
Lake Havasu City, AZ USA
:biggrin:

http://phoenix-az.boatsandstuff.com...er-jet-standup-jet-ski-for-2995_17798680.html

The Ad:
"I'm selling a good looking and running Roundnose SJ. If you know these machines then I dont need to explain them. If not, you probably wont want to pay $ for a machine, so click the back button and move on to a kawasaki standup (you can buy a much newer 1 for less money, but do you ever wonder why? It's because they are junk compared to the superjets).

This ski is super clean as you can see. Its all stock with the exception of the impeller and ride plate. Call me at 541-543- if you have any questions. NO EMAILS OR TEXTS PLEASE. Lake tests will be available for a serious buyer."
 
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