250 Polaris is a 250 Polaris.The only one that is diferant is the Cyclone and it is ported and hopped up from the factory.

 

Thats right a Pol 250 is a 250 except for the cyclone, try Ritter cycle, he seems to have all the knowledge and parts for us tb-250 guys. I bought the 2002 tb-250 service manual off of e-bay for $44, a lot of excellent info.

 

ya it dont take much to rebuild the top end i have to do it to my tb 250 because when i did a compression test on mine i was watching it and it started to drop kinda fast so im going to get a wiseco piston rings gaskets bearing clips and some other stuff i think its going to be fun .. the more u do the more u learn right

 

There are a lot better pistons than Wiseco (in my opinion) out there for the 2 stroke Polaris, so you are not stuck getting your parts from Polaris. I have grown pretty fond of the Namura brand pistons, and it is a moly coated piston - should retail less than $70. Make sure you replace the wrist pin bearing when you do the top end - about $20. Top end gasket set should run in the $20 range. There are TONS of aftermarket stuff available for the 250's, 350's, and 400 Polaris. You can go to www.armor-tech.com to locate an aftermarket dealer close to you. Boring the cylinder should run in the $35-$50 range, but make sure you find a machinist who knows what he is doing.

A shop rag placed in the engine around the connecting rod will prevent the loss of the flying wrist pin circlip when removing/installing the piston. It will also help keep out gasket particles when cleaning the cylinder mating surface.

ps- FYI - prices are based on the greedy dealers markup of 2X cost [img]i/expressions/face-icon-small-wink.gif[/img] - except the cylinder boring.

 

Is there a site for this "Namura" bland? I haven't found anything on them yet. I like the Armor-tech site...I've got a dealer right next door to my HVAC shop.

 

Actually the Armor Tech pistons listed on the web site are Namura brand - Armor Tech is new to the market and they have not started making ALL of their own parts yet. There is an Armor Tech gasket set available too - I would say should be in the $10 [img]i/expressions/face-icon-small-wink.gif[/img] range

I started using the Armor Tech stuff about a year or so ago, when they first came out, and I have been really impressed by the quality, not to mention the price. The brakes are as good or better than OEM or EBC, and based on the sports quads, they last longer than either too.