Yz125j bored out to 250cc

[Tim754]

300 dollar jacket ... must be a straight jacket??             Some of these characters must be just bullshitting

[OverTheHill]

was gonna say "the fins must've fallen off if bored to 250" [forgetting it's water cooled ha]. Special thinner water makes them go faster too?--must get some.

[09.0]

   quote ...."During rebuild it was bored out and now has an engine capacity of a 250cc (one of a kind) "

  

     Some one should ask him who done the rebore on the motor.

     Poppy
     

DR Who did the rebore. That barrel must be like the tardis

Re-tardis

[mudguard]

Iain,
Just sent him a long winded reply and gave it to the tosser, to correct every bit of his advertisement. Imbecile, shits me when sellers bullshit about an item.
Waiting for his reply? Won't hold my breath.

[Iain Cameron]

I always like it when they answer that I know nothing about their bike and how would I know that what they have done is impossible , eg one seller in the US was selling pistons for DT and RT Yamahas when I asked how the same piston fitted both a 250 and a 360 I was told to mind my own business  . just plain stupid I guess , but some newby will fall for this garbage and get burned . Iain

[DJVGXL]

maybe he has been reading Arizona Mikes adds?  I,am surprized that its not a X works bike ridden by Dack 

[Paul552]

maybe he has been reading Arizona Mikes adds?  I,am surprized that its not a X works bike ridden by Dack 

Dacca rode it after it was bored out.

He was just too fast for the 125 class

[oldyzman]

Just think of this for a minute though. Back to basics lads!
if it has a 2.0mm oversize piston in it, could that not mean in someones calculations...
125cc's x 2.0 = 250cc's

Brett

[Iain Cameron]

well said  Brett I must be soo dumb . Iain

[Hoony]

ah that makes sense..................shit no wonder my CR500 is fast its close to 750cc 

[80-85 husky]

put a 2.0 mm o/s in and you can drop it straight into a 1000 cc roady and kill them on power to weight

[Big John]

I just did some quick calculations it only needed to be bored out to about 80mm thats 24mm os no wonder it goes so well.

[Big Scotty]

If we imagine for a minute that this was possible,how much fun would it be to ride,hole shots a plenty LOL

[AJ]

His secret is a re sleave with baking paper. 

[Hoony]

I just did some quick calculations it only needed to be bored out to about 80mm thats 24mm os no wonder it goes so well.

its bored out so much the piston is now air cooled "flapping in the breeze due to no cylinder left"