485 Motor Or 540?

Thanks, checked out the site, seems liek they do alot of high quality work, but mostly with cars, im not sure if they would like a sled to work on, but thats why Id call.

I really dont wanna bring my sled down south and leave it for them to work on, and im not sure if thats even possible, so I dont know. Maybe if they had a sled there with the same proaction chassis as me, they could figure it out, but with my engine, which id ship them, whether it be the 535 or 485.

Whate your opinion on dual carbs, im hearing to not use twins on the 535....
 
I'm not sure I see a big problem with a single carb, in a way it seams better. the air is only being drawn in half the time with a twin carb, so the air is stopping and starting. seams like flow would be more constant witha single carb. as to using liquid twin pipes, seams to me that if the strokes and port timing were similar it should work fine
 
yamahammer this guy knows two strokes very well..... if you were to get porting done he would custom make the pipes for your engine. His pipes will make bigger numbers then most aftermarket companys. nothign but high quality. i was going to send him my sled and get him to build my motor. did you see the beetle?


i have talked to him in person and he says he will do two stroke motors. it doesnt matter if its a sled.....if its got a motor he will work on it.



if you dont do twin pipes make a big single....twins give good mid range and topend....single pipe gives good bottom end and ok mid range
 
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nice info there ike! and those dyno graph are very accurate, land and sea is far better than dynojet :) I know the owner ;)
 
yamahammer, dont take this the wrong way but it sounds like you are going way out of the way just to make 90 HP. and you must have some pretty deep pockets to want to mod a 540 cc motor that hasnt been produced in almost 15 years. I am assuming you are trying to put a 540 in a proaction chassis, but why not buy some coolers and convert it to a liquid? like a 600 twin or drop a triple in there? get a little more bang for your buck...
 
BBlueSRX

I was thinking of doing that for years now, but figured it a very large deal because I have to route water lines, new gearing, coolant resevoir and about a million other things im probabally missing. In fact, id prefer a big 700 SRX engine in my sled over a fan cooled anyday, but I like the fan as it is lighter, and doesnt need heat exchangers and all that stuff that goes with them, like having to keep them cool, etc...

Do you know what I would have to do to install a liquid motor in my sled? Im thinking it will be better if I get an entirely new sled, to get all the parts from. Possibly a 98 SRX.

But then, some people are going to say, that if im going to do all this, then I might as well get an entirely new sled, as it is cheaper, and whatnot. But I have my sled setup the way I want now and dont mind putting in the work for it
 
yamahammer you can also buy a used tunnel and bulkhead with the holes drilled and ready to go.....or you could just buy another sled....even buying a stock vmax same model as my sled could beat that 540.

but you might not be into the whole go faaaaaast thing. What are you looking for exactly? speed? or just a little more juice for the sled?
 
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I could just drill the holes myself, preety much mimicing the sled that the parts would be coming from (ex. 98 SRX), including any kind of gromits used, etc... Id get the longer Venture heat exchangers and rear optional one as well.

Id pick up one of those Clymer Manuals, as they have loads of valuable info.

One of the things is that the SRX pipes will almost guareneed wont fit my cab and the sliencer is going to be a close fit, if I decide to try and fit SRX compnents in the sled. Itd be a project to say the least...

Not too sure about any of this, just thinking out loud.

And ya, want to go fast, but have lots off off trail riding, and of course, with a longtrack, speed isnt the point. Basically need alot more jam to suit the terrain im in.
 
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well there is really no way no how you can fit an SRX motor in your sled without buying an srx hood. But a non powervalved triple will slide right in without clearance issues. A rear heat exchanger isnt necessary unless it is a powervalved motor. Putting the front heat exchanger in would be the hardest part b/c you would have to remove the track and skid, other than that it wouldnt be that bad. I have swapped out a couple tunnels and it is not too difficult to swap the exchangers. just my opinion though...
 
Cool, now im looking for any type of 700 tripple(non pv) sled out there, and of course its a yamaha.

Is there a difference in length or anything between venture 700 heat exchangers along the running boards compared to that of a long track?

My freind is selling his 98 SRX700, can I use the bender tripple pipes for a non pv 700 with the SRX motor? Reason for this is that the stock ones wont fit under my hood.

Such a change in topic, maybe I should change it?
 
Yamahammer485 said:
My freind is selling his 98 SRX700, can I use the bender tripple pipes for a non pv 700 with the SRX motor? Reason for this is that the stock ones wont fit under my hood.
Click to expand...

I believe I remember bender or someone making a hotrod SXR with a BB SRX engine and some other pipes.

One thing to remember, aftermarket SX pipes often run at a higher rpm than the SRX CDI likes.
when it come time to set em up, remember keep the pipe the same length from the piston.

probably cheaper and easier to use the non PV engine
 
get a second sled, one built for pure power, then another (the one you have now) can be the lightweight tossable sled :)
 
I wouldnt use those pipes as they are specifically tuned for the SX not SRX. you can put aftermarket pipes on a non power valve triple and they will fit under your hood. the SRX motor and or pipes will require the SRX hood.
 
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BBlueSRX said:
yamahammer, dont take this the wrong way but it sounds like you are going way out of the way just to make 90 HP. and you must have some pretty deep pockets to want to mod a 540 cc motor that hasnt been produced in almost 15 years. I am assuming you are trying to put a 540 in a proaction chassis, but why not buy some coolers and convert it to a liquid? like a 600 twin or drop a triple in there? get a little more bang for your buck...
Click to expand...

2-stroke Viking is still sold here in europe. That´s right. ´06 is the year when that 540 engine was sold as new...

Viking has 3 layer head gasget when the SR-V has 1 layer. + Viking has diffeent carb than SR-V. Those are the only differences what I know, and what I´ve been told by Yamaha mechanics here.

Anyway Yamahammer, let us know how this goes.

Ike
 
Ike said:
2-stroke Viking is still sold here in europe. That´s right. ´06 is the year when that 540 engine was sold as new...

Viking has 3 layer head gasget when the SR-V has 1 layer. + Viking has diffeent carb than SR-V. Those are the only differences what I know, and what I´ve been told by Yamaha mechanics here.

Anyway Yamahammer, let us know how this goes.

Ike
Click to expand...

Exactly what I was going to say, and its still being sold in Canada, as well as my sled and the Bravo.

Exams are coming up by the end of this week so everything is on hold until a week from now, but ill be back to thinking about all of this when they are completed.

Thanks guys for everything.
 
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