bad piston, bored?

[badluck91]

dont know a thing about yamaha blasters, ran across a good deal with some dude and i couldnt pass it up with only the coil not sparking being the problem.. now im tearing it down and puttin some money in the pit.. what i wanna know is do you think its time for a new piston or if it has been bored out first pick is when i took the head off second is after cleaning..

 

[UncagedShadow]

You should probably fully pull the jug off and inspect the whole piston and rings before making the decision. Some stuff you cant tell by looking only at the top of the piston.

 

[super noober]

You should probably fully pull the jug off and inspect the whole piston and rings before making the decision. Some stuff you cant tell by looking only at the top of the piston.

x2 on that

--------------------

 

[badluck91]

got some pics, dont know wtf im looking at with it being a 2 stroke..

 

[super noober]

im not liking the looks of those scuffs by the wrist pin. got any pics of the inside of the cylinder?

 

[badluck91]

i can get some hole on one sec

 

[super noober]

i can get some hole on one sec

ok, hurry up lol jk jk

 

[badluck91]

 

[badluck91]

lil things faster then i thought, jerked me farther than what my old 250x usto, it has a bills racing pipe, had the stock jets the jackass didnt change em vitos carbon reeds and came with dps clutches.. he needed money so i got it for a hundred from him..

 

[super noober]

looks like you have some damage to me. a $100 is a real nice deal even with a toped rebuild. you can get a piston kit off ebay for aound $100 and a bore shouldnt cost ya more than $60. can you feel any scratches on the cylinder wall?

 

[BustedassYZ]

Hard to tell from the pics but as long as there's no scratches in the jug I would hone it and Replace the piston n rings and call it good. If its scratched order an oversized piston and take it down to a Machine shop to get board

 

[badluck91]

nope cant feel any scrathes on the cylinder, or head

 

[super noober]

nope cant feel any scrathes on the cylinder, or head

well thats good, in that case since its all apart i would hone it and put some new rings in and ride that biotch!! if you have the money a new piston would be nice but it dosent sound like its necessary.

 

[badluck91]

ill look at all of that tonight.. gotta order a damn boss hub too.. thanks people

 

[super noober]

ill look at all of that tonight.. gotta order a damn boss hub too.. thanks people

glad to help

 

[badluck91]

forgot to ask.. is that the stock piston or what>?

 

[super noober]

can you see any numbers on top of the piston?

 

[badluck91]

nope not one number on top the piston

 

[super noober]

nope not one number on top the piston

well a stock piston is 66mm, im too lazy to do the math myself lol so just convert your measurement into mm's

 

[badluck91]

lmao this isnt a math site but its sayin sumthing about its only 53.339999999999996mm