Can the Blaster motor be made to hang with 250Rs, and 450 four pokers? I recently found out that the Blaster class in the local area is now defunct. This is after I bought a Blaster to build just for it. After 11 years since I have raced they decided to kill it the year I decided to build a quad to race in it. Pretty cool! Anyway, my options are scrap the Blaster, trail ride it, or build it to compete in a bigger class. I am leaning towards the last one. So is it possible to build a Blaster motor to compete? Like a 3mm stroker with a 240 kit, port the hell out of it, big carb, ect. ? Or would I be better off to put a YZ250R motor in it? It seems like a pretty straightforward swap. Or would the chassis not even be capable of competing? It will have the best of all the chassis parts available on it, and I already gusseted it up to withstand the stress of mx racing. I really like the little bugger, but if it is going to be a knife to a gunfight situation I'd rather figure it out now than later on. Any helpful info on this would be much appreciated. I:I
Can the Blaster motor.....
- Thread starter crxbart
- Start date
Idk bro, ask 245stroker. But a yz250r blaster would be nasty as long as you can figure out how to deal with the vibration...
That's pretty freaking impressive. Honestly it would be nice to retain air cooled simplicity too. So much easier to swap jugs at the track in a pinch. That, and these things are so light, and flickable, if that is a word. How does one get a hold of Kennedy. I searched, and couldn't find a site.
He's MX racing , not drag racing. Kennedys "50hp" is on a methanol drag port and somewhat generous of a # IMO, not what an MX rider needs. I know we can make the motor somewhat competitive while retaining rideability and reliability, but the 250R chassis has a much better geometry for that type of use. Honda has retained that geometry in their 450's. But, to be honest racing against purpose built 250Rs and 450's I think your "knife to a gun fight" annalogy is more accurate.
Just remember that 80% is rider skill while just 20% is the quads ability. Get as much seat time as you can
wildcard has a point, peak power isn't as important as power area under the curve in MX, but you should definately pm Kennedy_power and talk to him about your project. he'll set you up with the right porting, headwork, and cylinder.
this is all he has for a website as of right now
http://www.flickr.com/photos/kennedypower
this is all he has for a website as of right now
http://www.flickr.com/photos/kennedypower
I see. I actually just got back from Snyder Motorsports. Sean the owner was kind enough to stay open late for me to stop by. I'll be picking up allot of parts hopefully next week. He said he can make 38hp on a dyno at the rear wheels, with his MX setup. That sounds about right with retaining reliability. He also thought the YZ250R motor sounded like a good idea. He then told me given my age maybe I should consider racing the senior class, and running a mild Blaster motor might be my best bet. I don't know though. I don't feel that old yet.
As for the geometry of the 250R being superior, yeah it always has been an awesome quad. Given the amount of modifications, and parts I am about to dump into this thing. I mean it is going to be nothing like a stock Blaster anymore. Sure the cockpit size is kinda small, but it fits my 5'10" body quite well. Once I get the +3 swinger, and +5 +1 a arms on there. It will stretch me to a 47.3 wheelbase give or take, and widen it to the legal limit. The 250R was at 49.8" of the more desirable 88 geometry model. A 450R is even at 49.2" so maybe even Honda thought it might be too long. I could even go with a longer swinger, but according to Sean +3 is the best fro a MX Blaster, after all his years of testing. The man was quite knowledgeable, and I am really glad I got to meet him.
On paper I can see where each setup will have it's advantages, and disadvantages, but the weight advantage over the 4 stroke is huge, and it has a big advantage over a 86-87 250R, but only 4 pounds off of an 88-89 due mostly to the aluminum swingarm. The Blaster starts out at 320lbs, 88 250R 324lbs, 87 250R at 357lbs, and at 383lbs for a kick start 450R. I myself am at a svelte 152lbs. So not many others will be lighter than my bike rider combination. Although the A Arms, and Swinger will add some heft, as well as the other mods, like the gussets I added. I still feel I can keep it lighter, which will equate to less power needed to achieve same performance, and a lighter quad for my light self to throw around in the air, and through turns. I am sure no one races a 250R with an aluminum swinger anymore. I am also sure in race trim they all might weigh a little more.
I think given my size, and weight a Blaster might be a better chassis for me. I am basically building this little sport quad into a purpose built race quad. I feel it may work well with me. I felt I could toss it around easier than I remembered how my 250R felt.
245Stroker said:
I agree, skill is allot of it. That being said, I've raced allot of different things from MX bikes, to quads, to mountain bikes, to BMX bikes, and even automobiles. I have allot of experience in all of them. Getting back to my quad skills is going to be fun. I want to race every weekend this year, I am sure I won't, but I want to. I need to get back into the game.
I remember my second to last race on my 250R at a local track I got the holeshot in Moto 1 on a repeated like 7 or 8 time GNCC open class Champion, Dave Hopper, and a GNC National competitor Doug Shepherd. I led them for 3/4 of a lap, pulling out a decent lead like 10 bike lengths or so and then tragedy struck. I crashed hard all by myself out front. Broke my collarbone, and crippled my quad. It was the best 3/4 lap of my life until then. The next race was my going out party, and I won against no one special. My dad didn't want me to race anymore after watching me hurt myself so bad the month prior, so being 16 and without his support I hung it up. I raced the R for 2 years since I was 14. I lied about my age on the sign up forums for that long. HEHE! Now 11 years later I have my own money, and make my own bad decisions, but I want a comeback bad. It's a pretty crappy story really, and I hate it. Some of you won't believe I led such strong competitors, but it did happen. Then I did blow it. Had I kept it together, and kept racing, who knows where I would be at now. In my day I did well. I am allot stronger, and allot smarter now though. I will also never use a twist throttle, I blame that $35 piece of sh*t for my downfall.
All that being said, I feel I can do it. Not trying to be cocky or anything, but the question is will the bike be competitive? Sorry for the essay guys, but I had allot to say on this.
Sounds like your in the same boat as myself. I started racing on a blaster and then moved to an r. Then i thought I was done and instead, decided to build an mx blaster. My main reason for doing it is to win the season championship and also to prove that a blaster can run against the bigger 4 strokes. Just make sure that you get some good shocks! I'm sure you will since your going all out on the rest of the quad but i had to say it.
What class are you going to run?
What class are you going to run?
well it was just an example, blasters are well under estimated, to me it would be worth it to see just what it can do....
Good to hear I am not alone brother! I plan to race the Open Class, and the Money Class for the CRA. It is basically everything over 200cc. That might change now that they did away with their Blaster class. Besides, I am sure my Blaster will be over 200cc. At the local track here they have lightweight quad, 250x, 300ex, Blaster, Warrior class. Basically everything under a 250R. I plan to race that class there, until they start bitching, then I'll probably race the big boys there too. As long as no one bitches, I should be getting allot of track time there, and allot of 1st place trophies. I want to get some shocks right now, but the other stuff is priority now to get it rolling. I want some Elkas, I have a line on some, but the chassis stuff is priority right now, and I am getting a pretty darn good deal on it.
Gotcha. I agree, anything can kick ass if you spend enough money on it. That should be my life long motto.
yeah i know i bought mine rode it twice before i started doing mods, and a mad wife that i have to have all these upgrades! i told her because i am a guy with a hobby I:I
Yeah, I am about to sell my AR-15, and my Downhill Mountain Bike so I can get this project going a little faster. :"> but kinda I:I
You should very easily be able to get the blaster competitive in the light class. It will take some serious riding skills to be competitive in the bigger class. I didn't mean to sound like a naysayer earlier, with the right host of aftermarket suspension and a well built motor you should be able to be competitive if you can ride half as well as you say. My point is that for every mod you do to your blaster you can bet that those 250R and 450 guys will counter it on theirs as well. The fact of the matter is they will have an advantage on you with displacement, and not much of a difference in weight in race trim. When I was talking about geometry, I was reffering to the front suspension geometry on the honda line is superior to the blaster. Without serious frame modification that can't be changed much. The addition of +1+5 arms and some nice shocks will help for sure though. Good luck, I think it would be very cool to see how the season turns out for you. Keep us posted.
It's no big deal. I want honest opinions. It's better to find out now, than look like an ass, and find out on the track. I wouldn't say I was a phenomenal rider or anything. I came in dead last a few times, and I kept progressing. I kept getting better every time out on the track. My pinnacle was right at the end. I've learned allot since then, and feel more prepared this time around. When I was racing my 250R I was on my dad's budget. Now I am on my own. I want to do it right.
I loved my old 250R, but like 245stroker, I want to be different and prove a Blaster can do it. I really would of loved to race, and win the championship in the Blaster class. Since it is gone this year. I got to find a way to make this thing competitive in the other classes available to me. I know to start with a Blaster is a butter knife, and a 250R is a .45 Colt 1911, that makes a 450R a Desert Eagle .50 Can one not sharpen a butter knife to a lethal weapon, and hone his skills to overcome the pistol toting adversaries? I think one can. Could you explain to me what makes the 250r suspension geometry so spectacular. I am not trying to sound cynical, but just trying to figure out the difference. I know Honda makes good stuff. I still have two Honda cars, I love.
i think the blaster can do it, it all comes down to how you do it, if you do it right with the right parts, with the right kind of research, you can make the best blaster anyone has ever seen, the elka rear shock, its like 1000 bucks but it seems to be one of the best on the market, but it really comes down to balance and displacement, your suspension has to be able to handle what you do to the engine, just don't cut corners, make sure you do it right. can't wait to see it and hear about your progress, you have my vote on doing the race blaster, it would be one sweet project.I:I
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