300/440/550 The PJS Motor saga

strictlystandups

strictlystandups

Get me the BFH!
Location
El Cajon, CA (San Diego)
I was just curious if anyone knows the history on these motors. whether they've ran them or know somebody who has. John at jetskihaven sells them but I'm not sure who else does. If anybody has some insight let me know.
let the games begin!
 
dbrutherford

dbrutherford

Parts Whore
Location
Fairmont, WV
Gordon at www.PacificJetSports.com had some he was selling on eBay.

The ones John sells are a custom where he puts the cylinders on a set of Kawasaki 750 smal pin bottom ends.

I had a 7000 Viper PJS engine once and it was a crazy design for sure. It had a 750 bore but used 650 wrist pins. The crank was a 650 stroke but had a 550 style nose tapper. So it used a 550 flywheel and starter. The reeds into the cylinder were 750. The exhaust manifold was 650/750 style. It was a weird combination as well. I ended up selling it before ever assembling and running it.


DBR
 
strictlystandups

strictlystandups

Get me the BFH!
Location
El Cajon, CA (San Diego)
well the only reason that the idea seemed intriguing was the fact that I have a 440 hull and I wanted to do somthing with it as a homage to the old school skis. I like the fact that it is lightweight and compact, with the appearance of it giving off a "sleeper" type ora. I have brand new stuff and that's great but I wanted to carry on the tradition of what started it all, with a little fire added to it. People would see it and say (non-riders) " how old is that thing" and then I could fly circles around all those SXR and SJ guys (even though I have those too). Just curious and also didn't want to spend 4k on ski thats not worth 400.
 
Mark Gomez

Mark Gomez

is where the surf is
Location
Fullerton, CA
nope... that motor just sold... I work there.
The guy didn't buy the manifold and pipe for it though.
Call for anything else you need Gordon is a pack rat he has stuff I dont even know we have and Im pretty familiar with our upstairs inventory.
714 671 1145
 
upstand2

upstand2

upstand2
Location
N. IL.
I have a 700 viper. It's fine comparable power wise to a 750. I've run it for years without a problem. Unless you get some screaming deal I would just do a 750.
Now if you can get your hands on a Super , thats a different story. They have insane power.
 

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upstand2

upstand2

upstand2
Location
N. IL.
FYI Supers are case reed not cylinder reed. The ones I've seen JSH have are not Supers , not to say 850cc's could'nt haul a$$.
On this PJS stuff I'd have to say Gordy is the #1 resource. Sam also knows alot but I hav'nt always got what I paid for(my 700 was not a drop-in).
I have not been able to hurt my 700 , I've used a blend bottom of bottle oils , advanced the timing all the way , ran it with a leaky carb on e85 and basically treated it like crap. The castings are soft and tend to strip easy and the 550 based 7,8,900's are heavy.
I've been running my Super since 2000 without a problem other than some water ingestion. I've actually detuned it to get a 12 vein mag pump to not cavitate.
 
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Motorheads5

Motorheads5

Livin the generation gap
Location
ketchikan alaska
strictlystandups said:
well the only reason that the idea seemed intriguing was the fact that I have a 440 hull and I wanted to do somthing with it as a homage to the old school skis. I like the fact that it is lightweight and compact, with the appearance of it giving off a "sleeper" type ora. I have brand new stuff and that's great but I wanted to carry on the tradition of what started it all, with a little fire added to it. People would see it and say (non-riders) " how old is that thing" and then I could fly circles around all those SXR and SJ guys (even though I have those too). Just curious and also didn't want to spend 4k on ski thats not worth 400.
Click to expand...
Goodluck running circles around sxr or superjet's the js hull is just to light and squirley, power will not make it handle any better! we have a handful of them and love them for what they are. most of our's we have put 650's in and it's perfect maybe something for you to consider most people that don't know the older kawi's have no idea but they ripp. A friend of mine up here bought 2 of those pjs lazerjet's they look brand new that's the only ones I have been around they are all top end and topend only, quite truthfully they really suck. JMO
 
dbrutherford

dbrutherford

Parts Whore
Location
Fairmont, WV
upstand2 said:
FYI Supers are case reed not cylinder reed. The ones I've seen JSH have are not Supers , not to say 850cc's could'nt haul a$$.
On this PJS stuff I'd have to say Gordy is the #1 resource. Sam also knows alot but I hav'nt always got what I paid for(my 700 was not a drop-in).
I have not been able to hurt my 700 , I've used a blend bottom of bottle oils , advanced the timing all the way , ran it with a leaky carb on e85 and basically treated it like crap. The castings are soft and tend to strip easy and the 550 based 7,8,900's are heavy.
I've been running my Super since 2000 without a problem other than some water ingestion. I've actually detuned it to get a 12 vein mag pump to not cavitate.
Click to expand...

Hey Sam who? Marton?
 
brett

brett

-------------
Location
Ventura,ca
strictlystandups said:
well the only reason that the idea seemed intriguing was the fact that I have a 440 hull and I wanted to do somthing with it as a homage to the old school skis. I like the fact that it is lightweight and compact, with the appearance of it giving off a "sleeper" type ora. I have brand new stuff and that's great but I wanted to carry on the tradition of what started it all, with a little fire added to it. People would see it and say (non-riders) " how old is that thing" and then I could fly circles around all those SXR and SJ guys (even though I have those too). Just curious and also didn't want to spend 4k on ski thats not worth 400.
Click to expand...

if you want a sleeper copy foximus's build
 
Foximus

Foximus

CFL Cheapass.
Location
Oviedo, Fl
motorheads5 said:
Goodluck running circles around sxr or superjet's the js hull is just to light and squirley, power will not make it handle any better! we have a handful of them and love them for what they are. most of our's we have put 650's in and it's perfect maybe something for you to consider most people that don't know the older kawi's have no idea but they ripp. A friend of mine up here bought 2 of those pjs lazerjet's they look brand new that's the only ones I have been around they are all top end and topend only, quite truthfully they really suck. JMO
Click to expand...


Bah. Your silly. 550 hulls are the best. They just need to have their chines massaged, a big pump and tubbies.

And a yamaha motor.
 
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