new blasty blew up

chuck_norris

chuck_norris

New Member
Aug 10, 2009
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clayton,NY
hi im new to the forum. i just got a 2001 blaster. got it home and it ran great. on the way to my friends house i was slowing down to take a corner. when i pulled in the cluch it stalled so i thought i could just roll start it. when i let out the cluch the tires just skidded so i pulled over. i tried to kick it over and it wouldnt kick. i pushed it the rest of the way. it was locked up. after a half hour tying to think of what could have happened i tried to kick it over again. it kicked over but there was basicaly no compression. what do you think could have happened. could it be the rings? im going to pull it apart tomorrow. what all should i need to rebuild it. i want to use the wisco pro-lite piston with rings and wrist pin. what else would i need. gaskets? i was thinking the vitos high compression top end gasket kit but i want to stay running pump gas. im 14 and planing on doing the whole rebuild with my other 14 year old friend. i just dont want to screw it up so any help anyone could give would be very helpful.

thanks, walker
 
sounds like she seized up, looks like its gonna be time for a bore/hone and a new piston kit. with help from here, the right tools, and a good service manual you'll be able to get it knocked out.
 
Sounds like you stuck a ring, you may be able to get away with a hone and rings. Check the cylinder for any scoring or damage.

I'm 15 here haha
 
use of the proper tools is key, you'll have to find a competent machine shop too..

where you down shifting and trying to use engine brake to slow it??

where you mixing oil in the gas? or relying on the oil pump and oil tank to do the job?

if you keep the blaster outside in the cold the oil could thicken to a point that it would not tavel down the hose to the pump..just a theory?
 
You'll have to take the top end off and see if there is any scarring, you'll know it when you see it. If not i'll show you pictures of my old top end.
If scarring is present you'll need a bore and hone. When you get it bored (unlikely you'll be able to do it yourself no offense) Make sure who ever does it rounds down your ports so the rings dont catch the sharp edges. There is a special hone that will take care of this problem but i dont know what its called.
You'll defiantly want to ditch the oil pump, it was my down fall on my last motor.
Vitos high compression gaskets are good thats what i've been runnning.
 
Once you get it apart you will have a better idea of what all you will need to rebuild it. A topend rebuild isn't hard at all, just be sure to take your time and make sure its done right. You might want to get a clymer manual or repair manual for it, they have detailed instructions and really come in handy.

As for the gaskets, I personally wouldn't worry about the vito's high compression kit if it costs much more, I doubt it will help much, IMO.
 
the vitos gaskets r actualy 4 bucks cheaper. if the rings broke apart then how should i get all the dibree out without spliting the case. i think it is already bored .20 over. it has the oil block off kit and i was running amsoil. i was using downshifting as sort of an engine break. i was still using breaks though. how much would it cost to re bore and hone it. what does it mean to hobe it?
 
Dude, I think you obviously stuck a ring....best thing to do is go to a machine shop, ask them what they think of your cylinder....then buy the piston they think that would be good, take the piston and rings to them and have them fit the specific piston to the cylinder jug...i recommend getting a Wiseco Pro-Lite Piston..Dont get a Vito's or stock or any other cast piston...going cheaper is always the wrong way to go with pistons...hope this helps...and a Hone is taking a small glaze of your cylionder wall so that your rings can "break -in" to your cylinder..not sure if im using the right term but here's a pic of the machine....


http://rbryant.freeshell.org/hone lowpres.jpg
 
and actually the hone is what you use to set the final piston to wall clearance when you have a fresh bore
 
I would suggest to not using a tow vehicle to try and start it. That's a fast way to bend the rod.
Have a machine shop with a bore gauge measure the cylinder for out-of-round and taper.
Then ask yourself why it stuck the piston. Lack of oil, improper jetting. You will need to know the answers before reassembling the engine so it will not happen again
 
i think its a mix of getting hot, with lack of oil and bad jetting, has it got an open airbox? usualy if its seized it will need bored, the rings will be seized into the piston hence no compression, ive had this happen on a bike of mine when i was 16. it was my fault i was thrashing the arse off it, i had drilled holes in the airbox fitted a pipe and a big bore kit, i never bothered jetting it. seized it, left it for a bit and i could kick it over but it was fooked, fryed the cylinder and piston. but a top end is easy to do on a blaster you will be fine, dont rush make sure you do it bit by bit so you remeber how you took it apart.:D, weve all ripped things apart in a hurry, any idiot can. its putting things back together that counts;)
 
well i got her taken apart today. pulled the head off and the head looked fine. once i got the jug off i could get a good look at the cyilender wall. near the exhaust port it was all dug up and it looked like there was material built up on the opening of the port. it is already bored .20 over. how much farther should i have to go? hopefuly going to take it to the shop tomorrow and see what all has to be done. will i need to split the case to clean out any dibree or will it be ok? and thank you everyone for all the helpI:I
 
Depends if your piston is still in one piece you wouldn't even have to split the case just clean it out with some diesel fuel or something down there.
 
As long as your crank still turns fine than you should be alright with just flushing it, mine was locked tight so i had to split the case.
 
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