Does anyone know of a place making parts to do a big bore on a 800 sportman yet. I need to rebuild mine and I hate to rebuild anything stock.

 

hotseat performance sells performance stuff for polaris. they should have all the stuff u need

 

wow, rebuilding an 05 800 already, what happened to it?

 

Called having tracks and a lot of clay over the intake at least I am told this is what happened. We bought the atv at an auction and was told it was a demo quad for a company that made the tracks. paid $8500 for the quad and tracks with 40 hours on it. I knew I would have to do work when I got it. Only have 125 psi on right cylinder and 152 in other. Both are low according to Polaris specs. Also uses about a quart of oil per tank of gas. I figure that is what happened anyhow being that I cleaned a ton of clay out of the air box and intake.

 

high lifter and hot seat do not offer big bores. does anyone know if anyone even offers oversized pistons or just standard bore?

 

wow,they must have beat the hell out it in the high rpm range. what does polaris say the compression supose to be?

 

150-200psi in manual

 

wow thats more then i thought it would be. i searched and couldnt find any either.

 

I haven't heard of any either, you do know that you cant bore those cylinders right? I believe those are plated nickel. I looked into this last fall, burning oil on a 800 sounds oh so familiar to me![img]i/expressions/face-icon-small-happy.gif[/img]

 

that probably wht theres no big bore kit then. you must have to resleeve them. that sucks.