2007 Polaris Phoniex 200

[paintapig]

how much should it cost to replace just the o rings on the pistons??

[oxidized_black]

are you just looking for the parts cost or a mechanic to fix it?

what year is the bike?

[paintapig]

its an 2007. mechanic to fix it..

[oxidized_black]

not sure, a few hours on the clock i'm sure for labor, then parts.... not sure what the shop rate is in your area.

[footbal9584]

A ring set from polarispartshouse.com is about $30.

I'd say at least a few hundred, to make it cheaper you could remove the engine from the frame and take that in which would lower their labor charges. I did it on a 110cc Chinese atv and it took me about 2 hours including taking the engine off the atv, but actually replacing the rings only took about 30-45 minutes. Good luck man

[paintapig]

ok i got the rings replaced. but now i put it all back together and theys a loud knock in the motor and it bucks in drive and when going backwards. any ideas on that??

[oxidized_black]

was the engine removed from the transmission?

[paintapig]

no.... all i did was remove the top end. cylinder head and the middle part. chain guides and put back from a polaris page. i mean it starts and drives just a really bad knocking nose. i even did an oul change and put 41 oz like polaris say

[oxidized_black]

is it like a heavy knock like a crank bearing or sorta a ping like a valve? can you feel the engine and kind of tell if it's top or bottom end?

the jumping forward and backwards might be a belt ...

there are a few polaris guys on here that might have a better idea, wylde1 and polarisrich i know off hand have them and do lots of work on their own ... maybe send them a message to look at the thread you posted ...

[paintapig]

ya its a heavy knocking. sounds like in the middle of the motor. ok thanks/

[cheriah]

as dumb as this sounds,,,it was something I overlooked when I did my first piston job......make sure you replaced the gaskets with new ones, tighten the bolts down to spec (I had an air leak from not doing this correctly and my bike was over-revving and lunging forward) and check the intake for leaks......also, check your engine mounting bolts...Good luck!

[paintapig]

where did u have air leaking from??

[cheriah]

bottom of the cylinder

[paintapig]

ok thanks. i will go out now and try that. really hope that helps.

[cheriah]

hopefully you have a manual to go by for the tightening sequence and torque specs:yes: On mine, it was a pia to get to the left side head bolts cuz of the frame tube being in the way..had to use an open end wrench and turn it tiny bits at a time...it was a real learning experience, but now I know:wink:

[wylde1]

I trick I use for finding air leaks is to spray a little carb cleaner around anywhere the air could be leaking. It will get sucked into the leak and you will know right away.

[cheriah]

OHHH, nice tip Wylde1:wink:

[paintapig]

so i think i found out its a crank shaft bearing? just not sure how to change it.

[cheriah]

wow, that sux.....what made you come to that conclusion? Just wondering...

[paintapig]

wow that suxs? ha u make it seem hard. lol. i called the 2 dealers to see what the said and they both said the same thing. thats what it sounds like

[wylde1]

If two dealers are saying the same thing that would be a good starting place. Are you gonna take it apart or have one of them do it?

[cheriah]

yeah, the dealers would know.....

[paintapig]

i think im going to try to do it my self. i hope its not to hard..

[wylde1]

good luck and be sure to let us know how it goes. We all learn from each other that is one of the best things about this forum.

[paintapig]

i know its a low class quad but y i got my quads motor all tore apart. how do i know what size piston to get? i thought it might be a better idea for my wife to just have alittle more power and thought it would be easier now.

[paintapig]

i found out that it was not the crank case bearing. it ws the piston was hitting the side of the jug. and makeing the loud noises

[myquadrepair]

Stock piston but you need somebody with experiene bore the cylinder out ie 10 0r 20 thousand over and buy the rings to match.

[paintapig]

o cuz i was told that i needed a bigger piston if i had i had it bored to whatever