Looking at a 85 Polaris P3 250r/es, what are they worth?

[fabiodriven]

$400 sounds like a really good deal!

[topfli8979]

I though that was fair deal. Pulled the head when I got home, cylinder looks good, but piston does move side to side in the cylinder. So maybe just need new rings?

[fabiodriven]

Don't cheap out. Mic it yourself or have it mic'd if you don't know how to do it right. You may get away with just rings, but you very well could need a bore.

[Howdy]

Maybe I am too picky, but I replace rings and piston in my P3's when I rebuild them. I also have my local shop do all the cleaning, honing, boring ( as needed ).
Here is a link to some good top end kits: http://www.mfgsupply.com/atv/atvengi...olrebuild.html
I have been running these for years with only 1 failer. That failer was from sucking a god awfull amount of mud into the engine during a utility competition at TF ( 2007? ). I did take third place over all with it. Note: I would have done better but I didn't have any track practice. I seen it going on and pulled up and was the last person through the course. LOL

Howdy

[MIK6]

Maybe I am too picky, but I replace rings and piston in my P3's when I rebuild them. I also have my local shop do all the cleaning, honing, boring ( as needed ).
Here is a link to some good top end kits: http://www.mfgsupply.com/atv/atvengi...olrebuild.html
I have been running these for years with only 1 failer. That failer was from sucking a god awfull amount of mud into the engine during a utility competition at TF ( 2007? ). I did take third place over all with it. Note: I would have done better but I didn't have any track practice. I seen it going on and pulled up and was the last person through the course. LOL

Howdy

AND when it sucked the mud it kept running.. WIDE OPEN! you did 1/2 the course w the thing dieseling on you! I got no clue how you made most of them obstacles lmao!!

MIK6/ Mike

[M.Pargiello]

Im just about as anal. Ours got a new top end this fall, never a bad idea. You got a really great deal on it! But I paid about $350 less my buddy just wanted it out of his shop so I couldn't say no haha

[Howdy]

AND when it sucked the mud it kept running.. WIDE OPEN! you did 1/2 the course w the thing dieseling on you! I got no clue how you made most of them obstacles lmao!!

MIK6/ Mike

The only reason it stayed wide open was because the mud bound up in the carb slide. Gave a whole new meaning to "Hold my beer and watch this!!"
Howdy

[topfli8979]

ok thanks for the input guys. Does anyone know what the cylinder should mic out to be standard "stock" bore?

[topfli8979]

machine shop is boring cylinder, new piston,gaskets on there way. Should arrive tuesday hopefully! Anyone know what the torque should be on the cylinder, cylinder head? ready to get this thing back on the road.

[fabiodriven]

All of my trike engines I just go to 20 foot pounds. I'm sure someone can give you an exact number.

[jeswinehart]

Please PM me 5 lotto numbers (with power ball too)

20 Ft. pounds per manual.



17 on the cases

[topfli8979]

thanks guys.

[MIK6]

Find that drain i mentioned while the motor is apart.. thats the 1st place I check when mine fights me to start.
Good luck w it!
MIK6/ Mike

[topfli8979]

Ok got everything back from the shop, ready to tackle the reassembly of the p3. Forgive me if I ask a ignorant question, but have only rebuilt one 2 stroke. I got wsm piston kit 1.00 over standard. What should the ring end gap be? Or are they pre cut to fit?

[jeswinehart]

Stock piston ring end gap is .008" - .016" so I would suppose it should be in that neighborhood.