Yamax2?

[WFO Speedracer]

Lets stick with the 650 version,a strong case can be made that the 750-760 isn't a fair comparison because of the displacement difference and the larger carbs used,also on the 800-800 because one engine has power valves and the other does not and one uses much larger carbs.I will let the carb issue slide on the 650 Yami,its a pig regardless of carb size ,oh and BTW quit sidestepping.

 

[yamanube]

Lets stick with the 650 version,a strong case can be made that the 750-760 isn't a fair comparison because of the displacement difference and the larger carbs used,also on the 800-800 because one engine has power valves and the other does not and one uses much larger carbs.I will let the carb issue slide on the 650 Yami,its a pig regardless of carb size ,oh and BTW quit sidestepping.

So what you are saying is...

yamaha 760>kaw 750 (10cc really that much difference? 1.33%more displacement) yamaha 800>kaw800 ???
irregardless of how they are equipped, the can both be considered stock, wouldnt it be easier to just say Im right?

Do you really think a kaw650 with say a SBN44 and a pipe makes more power than a yam 650 with a pipe? Not only is that BS IMO but its has absolutely nothing to do with the topic of the thread (which is what I was trying to argue) swapping a 701 into an X2 is SOOO much better than a 650 and IMO better than a 750. What am I sidestepping now?

 

[dbrutherford]

I wouldn't go so far to say that a Yami 650 is better than a Kawie 650! I had a stock 95 X2 with the a primer and the water restricted to the exhaust pipe some. Well it would smoke my friends stock 650 square all day long.

I will be the first to admit though my stock 650's are weak!

Also I had a group K modded 750 SS engine in a 650 SX that I was not very impressed with the power difference over a modded 650. The ski had every bolt on imaginable on it too. Then again I suck at carb tuning and the jetting was never right.

A friend once had a 750 SXi Pro with a dry pipe that would rip your arms off in the mid range. However for right out of the hole bottom end... you better wait for the mid range to kick in and hang on.

Any 701 I ever rode was stock and had a decent pull especially after I jumped right off a stock 650 X2.

No matter what engine you compare, they all have their flaws as far as power output. We all want more power! To pull the big tricks, you will NEED that power!

So as far as engine swaps go for my X2's... I will just use a Kawasaki 750 SXi Pro or ZXi engine or get an 800 SXR engine. The swap is far too easy to curse yourself and use a Yamaha engine.

Finally it doesn't matter how much power you have if it isn't getting to the water! You better have a good pump/prop/grate/plate/nozzle setup to hook it all up.

 

[WFO Speedracer]

So what you are saying is...

yamaha 760>kaw 750 (10cc really that much difference? 1.33%more displacement) yamaha 800>kaw800 ???
irregardless of how they are equipped, the can both be considered stock, wouldnt it be easier to just say Im right?

Do you really think a kaw650 with say a SBN44 and a pipe makes more power than a yam 650 with a pipe? Not only is that BS IMO but its has absolutely nothing to do with the topic of the thread (which is what I was trying to argue) swapping a 701 into an X2 is SOOO much better than a 650 and IMO better than a 750. What am I sidestepping now?

You see you still haven't told me why it is soooooooo much better ,you haven't told me that because you can't.Yes I will say a Kawi 650 with a pipe and a 44mm carb will be faster than a 650 yami with a pipe and a carb.

 

[yamanube]

You see you still haven't told me why it is soooooooo much better ,you haven't told me that because you can't.

I have no way to physical prove to you that one is better (this is the internet) thats why I said ride and compare (650kawi650yami, 750kaw760yami, etc..) now you are just trying to start a pissing match because you have nothing better to do other than work on your hot vapor powered wetbike which you are waiting on parts from russia to finish. Im not playing this game right now....call up one of those "little japanese fellers" and ask them why they do it, they seem to be ahead of the curve.

 

[Crab]

The irony here is thak the yami guy's want the longer stroke like the Kawi's, and the kawi guy's want the bottom end porting like a 701.

 

[WFO Speedracer]

I have no way to physical prove to you that one is better (this is the internet) thats why I said ride and compare (650kawi650yami, 750kaw760yami, etc..) now you are just trying to start a pissing match because you have nothing better to do other than work on your hot vapor powered wetbike which you are waiting on parts from russia to finish. Im not playing this game right now....call up one of those "little japanese fellers" and ask them why they do it, they seem to be ahead of the curve.

Really I knew all along that you couldn't tell me ,its just a silly little game some of you like to play here,you say its better but can't say why,theres no proof because well,there is no proof.Its all smoke and mirrors ,its just better because you say it is.I have ridden and compared a large amount of watercraft.This is what I have found,the highest percentage of repairs here are on Seadoos,next Yamaha and last Kawasaki,is that because Kawasaki's are some paragon of reliability no it is directly related to sales Seadoos sell very well here followed by Yamaha and then Kawasaki.Are their certain things Yamaha does that are better than everyone else,sure but the same can be said of Seadoo and Kawasaki or Honda for that matter.Your arguement is lame .Ideally you would have a Kawasaki stroke with a yamaha cylinder ,Seadoo power valves and a Polaris ignition..:dunno:

 

[Big Kahuna]

i have to disagree with you , the kawi twin platform,either 650 or 750 is one of the most reliable motors out there, its just as reliable as the yamaha twins (61x). thats why they put those motors in so many skis for so long.
This topic is not about reliability, it is about putting a Yamaha motor in an X2.

and as far as bottom end i still have'nt ridden a ski with similar mods to either my old 650sx or my old x-2, that had the brap we all look for. i got a b-1 now with more mods and has less bottom end and had more problems then both of the others combined! its all an opinion and they're like a$$holes, everyone's got one.

compairing the mods in your 650sx and x2 to a modded 701 Blaster is not apples to apples either, it takes alot of power to really make a blaster hit good off the bottom.
yes the yamaha a/m parts are more available, and there were probably more yamahas sold over the last 15 years than kawi,which would explain the availablility of new and used parts.. just my two cents..

If you take a 650 Kawi motor and a 650 SJ motor and apply the same mods, Pipe, head... the Yamaha motor will make more power off the bottom, it is how the motor is setup... why do you think Kawasaki has made so many changes to the 750 motor setup over the years, one year the 750 would make good bottom end but horrible top, then a few years later it was god top with horrible bottom... and If I am not mistaken they actually designed the SXR 800 cylinder to have better bottom end, why? because Kanimori knew what could be gotten out of the motor after a few mods were added to it, you can always find more top end power out of any motor, you just cannot make them get bottom end if they are not designed for it.

 

[yamanube]

My 'argument' is entirely what this thread is about...I guess you should stick to PWCtoday if you feel you are king dingaling here. Not as many people are as impressed by a little bit faster kawasaki 300 or a seadoo powered X2(WR3 with a pole WTF?), rather talk about swapping in a proven, versatile and readily available engine into a cool vintage ski. You have barely posted any on topic information rather just spout your experience in an attempt to raise yourself above.

 

[dbrutherford]

If you want to test reliablilty.. give me your ski... I can Fugg up any engine!

Still though, a stock 650 square is not as hyped up as people on here make it out to be. Just as a stock 650 X2 is not all the hype. I own two and will admit it. Now drop a bigger engine in there, soem handeling ie pump mods, and you have a nice ski.

The stock square I rode handled great. But then again it wasn't going very fast to get squierly yet. That dry pipe 750 SXi Pro I talked about... it was like riding a pencil it was so out of control. The dry pipe power didn't help that either.

Round Nose SJ's are good at what they do, power to weight and that power is better down low than a Kawie of the same displacement. How much better? Not worth going out and buying a ew SJ for it! 10+ years with just BNG?

Most of the Japanese X2 guys are putting big bore Kawie powerplants in them. Those pics of the 701/760 versions are not as common.

 

[WFO Speedracer]

My 'argument' is entirely what this thread is about...I guess you should stick to PWCtoday if you feel you are king dingaling here. Not as many people are as impressed by a little bit faster kawasaki 300 or a seadoo powered X2(WR3 with a pole WTF?), rather talk about swapping in a proven, versatile and readily available engine into a cool vintage ski. You have barely posted any on topic information rather just spout your experience in an attempt to raise yourself above.

If you have some kind of personal problem with me perhaps you should take it to pm,this is really not the place for it.I don't know what your damage is besides that you started something that you couldn't finish here,really what are you doing in this forum argueing anyway? It's an X2 forum last time I checked,also last time I checked your ownership of a Superjet does not make you in any way ,shape form or fashion superior to me.I seem to remember taking a lot of my personal time measuring and figuering on a certain Thunderjet project you were working on a while back,now what was your beef with me again?Btw it seems several people are interested in modding 300sx's now,much to your dismay and the Thunderjet was the coolest thing since sliced bread when you owned it.Since when is a Rotax 720 not a proven versatile readily available ebgine?I am not in the Superjet forum thrashing it,it really makes you look like a d#ckhead.

 

[betrezra]

$$

A yami in a x-2 hull could be cool..... but why when big power kawi's are plentiful and cheap....

I just picked up a good 750 small pin engine just rebuilt top end for $350 shipped!!!!

I've yet to find anything with yami on it even close to that.

-------------------------------------------

PS - Don't feed the trolls.... they're running around the x-2 forums these days

____________________________________

 

[dbrutherford]

I have no problem with SJ guys. But I will say it gets old when all I ever hear is how I should get an SJ. I will get one, just not yet. Maybe when the 4 bangers come out and the price drops some. I paid around 800 for each of my X2's and I have tons of parts just waiting to get put on them. Since RN's are more newer than X2's I would like to know how many super clean barely used 800 dollar SN's are out there?

I admit it I really would like a new RN. But once you look at the price and the cost of all the aftermarket parts you will have to buy... I may just save up for a complete turnkey boat once there are more players making them.

 

[yamanube]

Great lets make this a superjet powered argument....so back on topic, we are talking about X2s.




701 in an X2, yeah people are doing it. Looks cool, what else?
For what reason does the 701 not go in easily because it is designed with 2 seperate bed plates so it sits to low?

(this is not a, why we should run a kawasaki motor in our kawasaki, its ABOUT 701 powered X2 if anybody is trolling its the guys who pointed the finger because I own a superjet I am now allowed to talk about anything else, dont get all butthurt, wedo try and stay on topic)

 

[Big Kahuna]

guys, I am going home for the night, would it be all possible to hold off the insults, name calling until sometime tomorrow morning, I would like to go home, drink a beer and chill out............

Personally, I want to see an Tigershark 770 motor installed in an X2

ducking and running...........

 

[yamanube]

If you have some kind of personal problem with me perhaps you should take it to pm,this is really not the place for it.I don't know what your damage is besides that you started something that you couldn't finish here,really what are you doing in this forum argueing anyway? It's an X2 forum last time I checked,also last time I checked your ownership of a Superjet does not make you in any way ,shape form or fashion superior to me.I seem to remember taking a lot of my personal time measuring and figuering on a certain Thunderjet project you were working on a while back,now what was your beef with me again?Btw it seems several people are interested in modding 300sx's now,much to your dismay and the Thunderjet was the coolest thing since sliced bread when you owned it.Since when is a Rotax 720 not a proven versatile readily available ebgine?I am not in the Superjet forum thrashing it,it really makes you look like a d#ckhead.

Like I said I am not playing your game. I was trying to keep it X2 only but you derailed that train quick. Sure you measure the length of the laserjet driveshaft, thanks :hail:the self appointed laserjet expert:hail: and for your info the Thunderjet was by far not the coolest thing when I owned it (ask anybody who rode with me). Take it to PMs, do whatever makes you feel good but dont play the poor me game I know your type and have seen you try and turn arguments around on other people take your garbage to private messages, I dont care but dont rush for the last word to make me look like a "d!ckhead" thats an exgirlfriend game.:smashfreakB:


sorry BK, I was typing while you posted...Im done

 

[WFO Speedracer]

I have test fitted pretty much every engine available to me that will physically fit and several that would not into the X2 hull,comparatively the 701-760 engine transplant seems to be one of the more difficult to fit in.That is why I ask why this particular engine.

 

[yamanube]

I have test fitted pretty much every engine available to me that will physically fit and several that would not into the X2 hull,comparatively the 701-760 engine transplant seems to be one of the more difficult to fit in.That is why I ask why this particular engine.

For what reason? Hits the bottom of the hull or the mounting area is not on the right alignment?

 

[WFO Speedracer]

Mounting areas are way out of alignment,now if someone had bed plates that adapted it up that would be another thing entirely.

 

[BlueBreadTruck]

honestly, I like the 701. My blaster has one...and yeah tons more power than a stock x2.

And not to say that a B-piped 701 is slow..not in the least...they plain rip.

However my small pin 800 with a blaster chamber is much faster low end and top end than a b-piped superjet....i have raced one.

I know its bored to an 800, However why goto the work of trying to get a yamaha engine to fit, when a 750 will literally bolt in and have the potential to be faster?

That being said, I think a stock 701 x2 would be TONS of fun to ride....but im not going through all that work.