YZ 400 in a blaster

Sounds good, do you have a pic of the finished pipe?
I know another guy on another forum who built a 490 blaster and he could never get it to run right, it wouldn't rev out and it just run like plain crap... The pipe was the cuase.
 
That will put you slightly past the stroke of mine which is 75mm.
The 490 was bad even in a dirtbike frame at a 82mm stroke, and the mighty CR500 is at 79mm.
You still might be OK though. I say this because of the bore size.
Your bore size will def be smaller then my 83mm and also the 490/500 by a mile.
Miss led ya a bit. Startin at 68mm stroke +4.5mm. With a 72.5 mm stroke & a yz400 piston @ 82mm (bout 380cc) I'm entering a whole new world for me but not close to yours. I've heard of some positive results from karters using a Balance Master product on their flywheel. Can't afford to have a custom part made for my YZ but I've got a few pounds of mercury and some time so we'll see what happens :) Maybe a mercury balancer on the flywheel & the drive gear would have some positive effect.
Sorry bout the thread jack, vibration's just a part of hybrids :)

2000blasternewb : Yahooo, it's runnin sooo your almost riding! Sounds good.
 
thanks bro, i will get more videos soon. i owe you a whole lot of thank you's for helping me along the way.
No problem man I love this stuff.
Don't let the vibe stories scare ya yours won't be that bad.

Miss led ya a bit. Startin at 68mm stroke +4.5mm. With a 72.5 mm stroke & a yz400 piston @ 82mm (bout 380cc) I'm entering a whole new world for me but not close to yours. I've heard of some positive results from karters using a Balance Master product on their flywheel. Can't afford to have a custom part made for my YZ but I've got a few pounds of mercury and some time so we'll see what happens :) Maybe a mercury balancer on the flywheel & the drive gear would have some positive effect.
Sorry bout the thread jack, vibration's just a part of hybrids :)
I wouldn't worry too much about the vibes then, I mean you already know about them from your stock uncounterbalenced 250.
They no doubt will be more but I don't consider mine that bad with the bigger bore and stroke.
They don't break welds or stop me from trail riding. I do wear riding gloves but nothing special.
It will totally be worth it.
Def report back if adding mercury helps you maybe on to something.
 
awesome build , I think after long consideration , I'm just going to BB my blaster , and run a stroker crank , It would be awesome to run a bigger engine , but I don't want to cut up my frame . I'll have it ported , and run a bigger carb . all that fabbin makes my head spin , just wanna ride......
 
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sound good man hows she ride

I dont know, that was just the idle break-in. still have to do another idle today and then tighten my chain. I was just so excited to get to kick it over. I still have a few things to do to her before i can ride her.

awesome build , I think after long consideration , I'm just going to BB my blaster , and run a stroker crank , It would be awesome to run a bigger engine , but I don't want to cut up my frame . I'll have it ported , and run a bigger carb . all that fabbin makes my head spin , just wanna ride......

Thanks for the support bro, to be honest with you the frame cutting wasnt bad. The only actual frame part I cut was the diagonal bars the front motor mounts bolt to.
 
hey that eclipse in your vid sounds like a yz400 :p, sounds great man. cant wait to see it running around, you need a better cameraman lol !!! I:I
 
yeah well that was my fault, he started on the other side of the bike and as walking around it so i thought he was recording and told him to stop. sure as sh*t he wasnt recording while walking around lol.
 
yeah well that was my fault, he started on the other side of the bike and as walking around it so i thought he was recording and told him to stop. sure as sh*t he wasnt recording while walking around lol.

im only playin man, at least you have SOMEBODY to do it for ya. im thinking my 8yr old daughter wouldnt do to hot lol. have to give her a shot sometime though hahaha
 
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that is good to hear. glad she is running good. i got the engine all together with the top end and everything but havent had time to fire her up.

side note.

did u repaint the frame? or at least the welds?