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Posted by: CBUS660R
I would not recomend that setup. The main reason is that the YZ250 motor is not counter-balanced and vibrates a lot. Also, the Blaster chassis is on the small side and not designed for that kind of power either. Finally, you would also have to deal with mounting the radiator and getting a pipe to work. In the end, you would have more time and money invested in a project like this than it would be worth.
Posted by: CBUS660R
You would be better off keeping the Blaster motor and modifying it with a 240 kit. I still think that trying to fit a YZ250 motor in there is a bad idea. Its not counter balanced, getting a pipe to work properly, and trying to fit the radiator in there are all things that will work against you. Think of it this way, if something like this actually worked halfway decently, you would see lots of people doing it already. If you were to sell your Blaster and put that money with the $4000 you are already planning on spending, I would think that you should be able to find a decent 250R, even in Alaska.
Posted by: CBUS660R
Sooo, you've been looking into this extensively? Since when, the last 12 hours? To me, it sounds like you have your mind made up and no matter what kind of good, reasonable advice you get, you are not going to listen to it, so why even bother asking for help? I say put the YZ motor in it, spend all the money on the suspension mods, and enjoy it until it falls apart after 4 races, and then go buy a quad that was at least designed as something other than an entry level sport quad and see how happy you are and how much money you saved.
Posted by: CBUS660R
If putting a modern, non-counter balanced 250 MX engine in a quad is such a good idea, why don't you see them every where? Ballance and Yokely both rode the Factory Kawasaki GNCC quad. Ballance could only take it for one season before he quit the team and Yokely only made it 2 years on the quad before he went back to a Honda TRX250R engine for this season. This was with Doug Roll building the quad specifically for the KX250 motor. In the MX ranks, I've only heard of one guy running one in the 250 class (an A rider at that). If you really have researched this subject for 3 months, I would like to see where you have been looking. Everywhere I look, everyone agrees that this is a bad idea, including the TRX250R specific forums that I frequent (I owned a 250R until last month when it was stolen). If anyone would try it, know about it, and recomend whether or not to do it, that's where you would find out the truth. The only people I know of that have had any success with these kind of setups are hill shooters. You know, the guys that sit around all day and ride for 6-8 seconds at a time in a drag race up a hill and the only real riding they do is back and forth from their truck to the hill.
Posted by: CBUS660R
Atious, I did say that you do see them in the dune scene, be thorough and read everything that I write . I am talking about shoving a non-counterbalanced 2-stroke MX bike motor into a Blaster (or any quad for that matter) for motocross use. These hybrids do not hold up well in MX. HiPerBlaster26, tell me how these guys are counterbalancing these motors? I know on my 250R, the counter balancer was internal, driven directly off of the crank, and has totally different cases from the CR250 motor that it is roughly based off of. Everyone in here is so quick to say you are wrong without thinking about the application. We are talking about taking a modern 50+HP MX motor and putting it into an entry level sport quad that was designed in 1986 and trying to motocross it. Say all you want about guys doing all kinds of crazy SH*T for dune shooting or trail riding, it is not relevant to what we are talking about here. We are talking about motocross, where stock 400EX and 250R frames have a hard time holding up with mildly modified factory motors. I am not talking about casual trail riding, I am not talking about hill shooting, and I am not talking about TT racing. Pull your heads out of your arses and read everything that is written, not just the part you disagree with.
Posted by: CBUS660R
Blaster2fast, if the article you are talking about is the same one that I read a while back, that is the quad that I referenced previously. If my memory serves me right, they custom built the frame specifically with some different things to combat vibration and prevent the frame failure caused by vibration. Is that what you are going to do? Custom build a frame from the ground up? As far as going on facts and sh!t that I don't know, let me put it to you this way. I've been riding quads, dirtbikes, and streetbikes since you were in a diaper. And I've also had subscriptions to dirtbike and quad magazines dating back to the late '70's when my father raced dirtbikes. Don't tell me what I do and do not know. Like I said previously, just go build the damn thing and let me know how much money you actually spent, how easy or hard it was to build and get running properly, and whether or not the frame actually held up for more than half a season. Then decide for yourself if it was actually worth it from a money and time standpoint. After all, this whole discussion was started because you are on somewhat of a budget and can't find a decent 250R that is in your price range, right? You said you have about $4000 to spend on the Blaster or whatever you get for the Blaster plus that $4K to buy something different. Unless you have a line on a cheap, cheap bike, you are going to spend more than half of the $4k just finding a good late model YZ250 model that puts out the 50+HP that you so desire.
Posted by: YoDaddy
You can do what ever you want, and tell yourself what ever you want to hear, but there isn't a stock frame other than the C-dale frame that will actually hold up to fast, aggressive MX racing for a long time, and I"m just talkin about the ones that have stock motors in them. Put a 50+ HP motor in a BLASTER frame and race it hard for one season and tell us how much you have to weld on it. You can talk about all these desert quads, and trail quads all you want, but MX is a whole different ball game.
If you really want to do this, go for it. It's your money, but you would be a lot better off spending half the money and buying something that can actually handle MX racing.
Posted by: MxDale71
Go with one of the 400 class 4-stroke quads or w/ a 250R. Yamaha doesn't pay a lot of attention to handling, and the blaster frame wouldn't hold up to mx very long... it really wouldn't be able to handle mx w/ a YZ250 motor in it.
IMO, the best MX'ers in no particular order:
Cannondale (any of them)
400ex
250R
LTZ400
KFX400
or a custom built CRF/YZF 450 motor in a 250R style frame.
Posted by: 250rmike
just to let ya know a 250r is no more maintenence than a blaster. all you would have to do to make it competitive at local races would be put numbers on it. if a blaster will hold its own than you dont need to mod the heck out of a 250r. and you could prolly get a 250 pretty cheap. right now i am selling mine for 3600.00 with mods(chassis is stock) plus shipping which i dont think is much more than prolly 500$ cause its about250-300 to ship a bike from maryland to california. just a thought plus it would be a smoother ride vibration wise and you would have an all around good bike that will hold its value well. not many people buy specialty bike especially 2 strokes anymore
Posted by: YFZRacer
cbu just to make a point the yz250 engine would be more reliable then a 240 blaster engine and have more power so why not and it will be a fun project he'll just need to do some extra bracing and vibration stuff
and ya he made a good point new brakes would be a good idea but expensive
Posted by: YFZRacer
he can get just the motor from yamaha he doesn't have to get the whole bike
Posted by: YFZRacer
and everyone should relax a bit maby he just wants to do it to be different it will be a fun project and then he can say he made it sometimes its fun not to just go the easy way out and just buy new it will be a kewl project and if it works it will have loads of power and be light whats a matter with that jmo
-cory
Posted by: YFZRacer
good luck
Posted by: Blaster2fast
Yamaha Blaster
with a yz250 engine
2+2 axle
works ZPS shocks all around
2+1 a-arms
Holeshots 18' all around
K&N pro flow
sound good to anyone? anyone got any other ideas to add to that , that will make it even better?
Posted by: Blaster2fast
aww come on guys... i wanna know if i should invest the money into this or if its not even worth the time...
Posted by: Blaster2fast
i know the blaster is very sub-par. But i like it alot! because i can handle it im kind of a small guy. and i think it would do just fine. I might buy myself a new frame also, but thats only if i need. I think it will do just fine with all the extenstions. what do you think wouldnt hold up? i live in alaska i cant exactly get my hands on a 250r cheap./... an di dont want to go buy a new quad... and this project is an estimated 4000$ and then me and my dad are mechanix so we can put it 2gether.
Posted by: Blaster2fast
i think it would be good... not the BEST.. im ya it would be better in a 250r ..and i wont go 4-stroke BR>but also its gonna be a fun project to make work.. i mean how many ppl do you know with a blaster that will go that fast?
Posted by: Blaster2fast
o no... sorry if you think im trying to totally disagree with you here, but if been looking into this extensivly, looked at all those factors. vibration is the biggest problem.. and thats a simple one at that. This has been done. I have the site bookmarked at school i wil post it l8r maybe. And that quad was awesome. unstopable! if possiblei would like to stick with yamaha im a yami so im against honda haha. 250r cost to much cuz first you have to get a decent and then you gotta mod the junk outa them to make em good.. and its not like im racing HARDCORE MX its juss the local races at the track. so i dont think my frame will have a problem, it will hold up. i know exactly how ot put this in there and where to mount everything and how to do the pipe and everything. its gonna take me about a week once i got all the parts to put it 2gether and then it wil be ready to ride...why no one else does it... because no one lieks the blasters.. they are sub-par.. i love mine because i can throw it all around in the air and stuf and im a smaller guy... " why spend that money on such a cheap quad.." price doesnt matter... all depends on the rider and there style.. my style is on the blaster.. ive ridden a banshee.. liked it but liked the blaster a lil better ont he track. raptor.. no way there trail bikes riden it on the track... no good. never ridden a 250r...dont really want to either.. to much maintance to keep that 86' up.
Posted by: Blaster2fast
hmm actully about 3 months now... ive heard alot of godd from this idea... some bad.. and then you guys lol. but maybe i will go and get a 250r ... do you guys think it would be that much betteR??... wut about a 250r w/ a yz250 engine?? i like the 250 engine cuz its nice.. puts out about 50-55 stock... thanks for your guys advice though i think i mgiht look into a cheap 250r. maybe even just trade the balster for a old crap 250r.. and restore it .. hm hm ideas ideas ideas!!
Posted by: Blaster2fast
thank you.. i never considering the counter balance a problem... but these guys were instist that it would be..
Posted by: Blaster2fast
Alright CBUS660R
i am at school right now but at home i have a article from DW of a MX RACER that did this... so dont tell me it doesnt hold up because it does.. its been done and it works.. your only going on facts and sh!t that you dont know.. go look at someone that has done it already and then tell me what you think.
Posted by: Blaster2fast
ye si am seriously considering getting one and then if i dont like the power on it i will transplant the yz250 into that and then ill have a YAMANDA lol if i can find one for 3-4,000 then i iwll get it. because that would be the ideal racing machine for me at least
Posted by: 800
No quad is better than the Honda 250R quad for MX.
JMO
800
Posted by: Atious
I've got to seriously disagree with CBUS660R. As a matter of fact, you do see them everywhere. Have a good look at the Glamis dune race pictures in the various magazines. Most of the quads have had the original engine pulled and a MX mill put in. Its the best hp increase for the money. The vibration issue is pure myth. Youre not talking about a weight loss vibrator belt like people in the not-know would like you to believe. You can always spot someone who talks without experience. Vibration is not an issue. I own and ride a Yamaha Raptor based mod-quad with the most vibrating engine ever made....the XS650 twin! leave the kill switch off and hit the starter button and it rocks back and forth as the engine turns over. Start it up, and it purrs like a lion. have a look....
http://www.puremediahosting.com/gallery/xs01/Project_XSRc Build what you want. Ride what you build. Be proud.
Posted by: HiPerBlaster26
The transplant has been done many many times successfully..these people that decide to take on the projects naturally do them right by counterbalancing them while making the motormounts and such..they arent going to leave it halfa$$ and try to sell it like that..especially if the guy stuck money into susp mods to handle it..they RIP and are almost ALWAYS put together greatly.and yes the YZ250 motor RIPS and is very reliable and it sounds to me that the machine u are wanting sounds perfect for you if u really wanna wax some 250 Riders with your size..the blaster frames geography is nice for the right sized person..later
Posted by: HiPerBlaster26
yea, no problem...I know how everyone else thinks, just as I would if i didnt have a badass blaster myself, cause I know how alot of people do see it as being since its a slow stock quad its NEVER good enough no matter what is done to it or it cant be as superior of a quad as the bigger displacement quad because of its crappy stock form..but we know what a blaster can be transformed into..anyways..no problem and later
Posted by: HiPerBlaster26
WELL SAID!! :-D
