85 250r

[buzzy613]

im pickin up an 85 250r from one of my neighbors, the motor is out of the frame, it lost spark he told me he picked up a new head for it( i went with him), i plan on getting it milled and O-ringed,i plan on getting it runnin again,i just haqve a few questions, what could causet to lose spark? Should i put a new piston in it or re ring the old one? should i replace the crank bearings? I was told its proted bored .60 over and the head was milled. and what would i be the cost of getting it running again?

[fabiodriven]

I can't help you too much with the spark. Stator, coil, CDI, I dunno.

If the bore and piston measure up OK you can get away with doing just rings a lot of the time.

Crank bearings/seals are never a bad idea on a 25 year old machine. Do you know when they were done last?

Cost? There is no way to predict that.

[buzzy613]

i think i could gett it running for about a grand. im probly gonna replace all the bearings in the case and possible wrist pin.i might get a used stator off a running bike but im gointo diagnose the problem first

[zackwhite]

put trailprotrailpro pistin at top center and try seeing if the plug is fireing.if not change it and try the wire and coil.it might just be the plug

[buzzy613]

im going to go through the eletrical and the motor and i doo belive the crank bearings were done about 5 years ago, so im going to go through the case and if it needs bearings replaced then ill replace em. im going to hone the cylinder get the head o-ringed and get a new used stator also that was off a running bike

[SHIFLITE]

I would bet the cdi box is bad.

[buzzy613]

ill check it out when i pick it up

[Drummerforu]

any update on getting the spark fixed?

[buzzy613]

look at my other thread project freddy