New Yamaha 3cyl 4-stroke

That's cool and all, but... Why? I mean other than restricted lakes, I can't see a reason. That just looks like a giant pain in the ass to work on.




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Because 2 strokes are becoming a dinosaur. It's only a matter of time before all 2 strokes are banned.

I might be the 1%, but I would rather 4 stroke than 2.
 
If it's based on the nytro sled motor it's very happy with boost, I'd guess that it is because they're both 1049 cc.

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Personal I could care less about 4-strokes but I have a feeling that within 10 yrs from now all 2-strokes will be banned from all core lakes. After that either the standup will disappear from lakes or someone will make a cheap 4-stroke standup
 
I often wonder why the pwc manufacturers don't look at the entire small engine market for ideas. In 2002 Stihl brought out a nifty new concept called the 4 Mix. I thought it was a great idea. Yamaha could make this work in sj if they put some time into it. The engine could still be made to about the same size as the good ol 701 and you get the best of both worlds. 4 stroke level emissions and sound output, 2 stroke mixing and power. I really liked the 4 Mix string trimmers when I was working at the dealer.

http://www.stihl.com/4-mix-engine-lightweight-and-with-good-lugging-power.aspx
 

tshank123

Yo hablo ingles
Location
Vegas
Racers would like it.
Possibly if the power was right.

Agreed. Look at the state of stand up racing right now. The predominant ski is still the SXR, a ski that hasn't been manufactured for several years now. Yes, you can still buy a superjet brand new but they are not very competitive in any class besides lites (and you have to put a 760 cylinder on it to stand a chance). Aftermarket hulls are fine for GP and Open classes but those classes are generally reserved for the higher skilled riders. Stock/lites, limited classes are running out of options if the superjet is the only ski that can be bought brand new.
 

Big Kahuna

Administrator
Location
Tuscaloosa, AL
Agreed. Look at the state of stand up racing right now. The predominant ski is still the SXR, a ski that hasn't been manufactured for several years now. Yes, you can still buy a superjet brand new but they are not very competitive in any class besides lites (and you have to put a 760 cylinder on it to stand a chance). Aftermarket hulls are fine for GP and Open classes but those classes are generally reserved for the higher skilled riders. Stock/lites, limited classes are running out of options if the superjet is the only ski that can be bought brand new.
I finished 2nd place to a Superjet at the Hartwell Race. It was wet piped. and I was on a and SXR. I could not out run him on the holeshot. And I got 2 really good starts.
 
As Scott Watkins said, the day you put a 4 stroke in a stand up is the day it ceases to be a jet ski.

Imo the current 4 strokes like the hydro or belassi, are another class of machine altogether. Too big, too heavy, too expensive, too much maintenance. The belassi is nearly 10 ft long. That's not a jet ski anymore. It becomes less like moto x on water and more like moto gp.
 

tshank123

Yo hablo ingles
Location
Vegas
I finished 2nd place to a Superjet at the Hartwell Race. It was wet piped. and I was on a and SXR. I could not out run him on the holeshot. And I got 2 really good starts.

Yea I had basically the same thing happen to me at St. George. Most races are IJSBA though, so you don't normally have to go up against a piped SJ. I would much rather be on the SXR in rough water though.
 
Ijsba favors the sxr for sure.

They allow a 760 cyl and head because of the rius special edition. Which also came with a wet pipe. But the pipe is not allowed.
 
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