It really comes down to the whole Ford vs Chevy thing, both make great power when done right. Dan Hansen finally convinced me to stay team green and build it up, since you already have the longer stroke working for you. Bluebread, did Sand do your motor?
Yamax2?
- Thread starter eel
- Start date
dbrutherford
Parts Whore
- Location
- Fairmont, WV
I hate it when people build a Ford roadster and put a Chevy engine in them. Never understood why but someone told me that it is was because the Chevy drive line was easier to mock up in the Ford chassis/body.
Simpler and cheaper, just price out a simple rebuild on a 350 chev vs 302/351 ford. Even the aftermarket parts are less, ford changed stuff all the time year to year. I may be putting a big bowtie on my Ranchero, we'll see. They even make HEI chev distributors now to fit fords.
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betrezra
Eat, Drink, Breath x2's
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The cool thing is there are plenty of options.... so If you have the gumption to ACTUALLY do something rather than talk... then get after it and show us some pics of a cool build.
The whole yam vs kawi thing is played out...... yadi yaddaaa.... who cares.
I'm a fan of fast and unique. If you've actually built something rare and unique and FAST.... then post it.
Not too impressed with a bolt-on ski.... big deal. Let's see the cool swap skiis.... they get me fired-up.
Who actually has a yami-x-2?....... let's see the goods!!!!!
Vids pleez........ REAL experience would be nice.
The cool thing is there are plenty of options.... so If you have the gumption to ACTUALLY do something rather than talk... then get after it and show us some pics of a cool build.
The whole yam vs kawi thing is played out...... yadi yaddaaa.... who cares.
I'm a fan of fast and unique. If you've actually built something rare and unique and FAST.... then post it.
Not too impressed with a bolt-on ski.... big deal. Let's see the cool swap skiis.... they get me fired-up.
Who actually has a yami-x-2?....... let's see the goods!!!!!
Vids pleez........ REAL experience would be nice.
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dbrutherford
Parts Whore
- Location
- Fairmont, WV
I hear X2 Cartel has a hydrogen peroxide injected high presure....
I saw a show on discover where this hydro racing boat had twin gas turbine engines in a boat that competed against the Miss Bud Weiser boat. They make smaller turbines, that engine may be an opppurtunity. Those engines wouldn't like water injestion too awful much....
I saw a show on discover where this hydro racing boat had twin gas turbine engines in a boat that competed against the Miss Bud Weiser boat. They make smaller turbines, that engine may be an opppurtunity. Those engines wouldn't like water injestion too awful much....
BlueBreadTruck
X-2? Yes please
- Location
- Cape Cod, ma
who is sand? I just had it bored and put it togther myself...nothing special at all....no porting, even runs the stock head @ 180 psi.
Legdragger
Bringing it back
- Location
- New Hampshire
I think it would be cool to have an easy kawi to yamaha conversion kit. I would try one with a 5 mill lamey on it. But that is quite an engineering project to make the swap when I know I have limited time a money that I would rather spend riding and going on trips to make new jet ski friends. A nice kawi big bore goes real good and is easy to drop in although even that has conflicts with dual carbs and electrics and gas tanks.......
Please try to remember:
This is the X2 section, don't take it serious enough to get offended, we are just having fun.:bananalama:
Please try to remember:
This is the X2 section, don't take it serious enough to get offended, we are just having fun.:bananalama:
eel
Our home is girt by sea
These are my reasons.
A kawi 800 sxr engine is a time bomb when you start to make serious hp.
You can get good useable and relatively reliable power out of a 701 BASED engine.
You can just about get parts for it at your local convenience store.
x-h2o and ebay is full of goodies.
I wouldn't use an upright rotax as an anchor, they are not worthy of that.
A kawi 800 sxr engine is a time bomb when you start to make serious hp.
You can get good useable and relatively reliable power out of a 701 BASED engine.
You can just about get parts for it at your local convenience store.
x-h2o and ebay is full of goodies.
I wouldn't use an upright rotax as an anchor, they are not worthy of that.
Legdragger
Bringing it back
- Location
- New Hampshire
How much powe does a 780 XP motor make? They are kinda cool looking motors with the power valves.......
djyox
Old school -not by choice
- Location
- Twincities, MN
Ford vs. Chev.
Every 650sx/x2 I've been on is dullsville. I would never believe the hype that you can make good power out of a 650, no matter who was telling me, UNLESS I rode one that had good power I would listen then, but not until I felt it for myself.
I already fell for that money pit once on believing that the 550 could be made into something. My 550 got lots of goodies, and went through two motors just to do both the PP and Reed, both were huge disapointments, compared to other skis.
However, my first time on a SJ was the 650. I'm unsure of what was done under the hood, but it had good power and compared to my 550 was a great ride! I can't say the same about the kawi 650s. I honestly think that was the redheaded step child and kawi should have dumped them or never even made them and just jumped right into the 750s.
Now the real question I would love to see answered, is what motor/setup are those japs running in those videos??? Can a kawi be built to have low end punch like a yamaha? How much porting work would have to be done to do that? PJS 800s have good low end? what about those?
Well Pete seems to be having fun on his kawi base motor, so I'm following suit for my x2 project and getting a 750, and will be building that up. However, if I did know how to fit the 701 in the x2, I would be all over that.
Every 650sx/x2 I've been on is dullsville. I would never believe the hype that you can make good power out of a 650, no matter who was telling me, UNLESS I rode one that had good power I would listen then, but not until I felt it for myself.
I already fell for that money pit once on believing that the 550 could be made into something. My 550 got lots of goodies, and went through two motors just to do both the PP and Reed, both were huge disapointments, compared to other skis.
However, my first time on a SJ was the 650. I'm unsure of what was done under the hood, but it had good power and compared to my 550 was a great ride! I can't say the same about the kawi 650s. I honestly think that was the redheaded step child and kawi should have dumped them or never even made them and just jumped right into the 750s.
Now the real question I would love to see answered, is what motor/setup are those japs running in those videos??? Can a kawi be built to have low end punch like a yamaha? How much porting work would have to be done to do that? PJS 800s have good low end? what about those?
Well Pete seems to be having fun on his kawi base motor, so I'm following suit for my x2 project and getting a 750, and will be building that up. However, if I did know how to fit the 701 in the x2, I would be all over that.
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
110 hp stock but without putting a full vee into the hull and major glass work it won't fit,already looked at that one,it sits too high and the starter won't clear,the 720 with some minor mods to the stock bed plate is pretty much a bolt in.I have plenty of spare parts,but I haven't seen too many 720 engines grenade.There are plenty of these 720 engines in hx race boats and they hold up fairly well with way more mods than this one is going to have.
D Slicker
Durham, dont forget it
- Location
- Pottstown, PA
I have an extra ported 701 sitting in my shop and know my way around an X-2. New project???????
wadman
wadman
- Location
- winsted CT
djyox
Old school -not by choice
- Location
- Twincities, MN
How cheap can one of those 720's go for?
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
As cheap or cheaper than a yami-kawi engine setup,I wouldn't advise it unless you have acess to lots of parts like I do as finding all the ingition-electronics can get expensive.I am running a 93xp ignition which is configured to run without an MPEM and uses a seperate rev limiter.This and the older yellow engine 587 ignition are the only ones that will work without an MPEM. BK can we resume the namecalling now? J/K we worked it out.
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dbrutherford
Parts Whore
- Location
- Fairmont, WV
Yamanube, sorry if I sounded like I was getting on your case. I wasn't trying to. I want a SJ myself but I have to wait until they come down in price some or I get more debt paid off. I like the idea of having a stund up but similar to an X2 with a conversion hood 
Legdragger
Bringing it back
- Location
- New Hampshire
I nominate DSlicker to engineer a conversion kit for us to put Yamaha motors into Our X2's!
Just step on his foot so he can't ride for a few months and he will have it all figured out for us.......:nutkick:
Just step on his foot so he can't ride for a few months and he will have it all figured out for us.......:nutkick:
I don't think quick throttle response is as important for an X2 as it is for a standup. I would rather have the most power I could get even if it came with a slight lagg. A high ported Yamaha is no better than a high ported Kawasaki. I could make a Yamaha fit but probably won't mess with is as long as there are plenty of big pin 750s around.
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
The 650 would work also especially an X engine but the 720 has the same stroke and a lot bigger bore.The 720 will go out to 754cc's with a 2mm overbore,the liners are thick enough to accept that size bore.