Wiseco vs. OEM piston

My pony is starting to belch smoke, so I've decided to rebuild the top end. I priced both OEM and Wiseco pistons, and, strangely, OEM are much cheaper. Are Wiseco pistons $30 better than stock? What is the advantage of the Wiseco? Thanks,

You might just need some fresh rings...

There are several pistons available for the BRP. I suppose the Ross is the 'best' -- but really it depends on what you want from a piston. The OEM unit is excellent. So is the Weisco. If you want to go into the specifics about what piston would be best for you needs, try calling Rob at Barnumspro.com -- he will give you the run down on skirt sizes, composition, tolerances, finishes, casting, cost, etc. for the different pistons...

BUT if you are a trail rider looking for a cheaper reliable fix to some blow by...consider new rings and a vavle job while you are in there....

You nailed it, I am that trail rider looking for a cheap reliable fix. I guess I'm used to rebuilding small bore bikes, where it's cheap to just replace the whole piston and even cylinder, so I just assumed that I would need to replace my piston. I'm not so poor I couldn't afford to buy an $80 piston and a little machine work; is it worth the expense to replace the piston while I'm in there? How long do pistons last in big singles? Thanks for the input,

I would replace the piston since you will already have the bike apart. like you said you are not to poor to spend 80 bucks and get a little machine work. just think of the piece of mind it will give you. you will never find yourself wondering what if. just my two cents

Mark

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now

  • Similar Content

    • By Jeremy Evans
      I just bought a 2012 xr650l and it starts and runs great until about 4000 rpm give or take (I’m guessing) it feels like it spits and pukes. Also when releasing the throttle the exhaust pops and hiccups. I am calling the dealership to ask if they are willing to fix the problem as I just purchased from them yesterday but I am curious as to what the problem could be in case they do not offer to help for my “as is” purchase. I have read a couple other topics on here that talk about the vacuum lines being hooked up to an air cut diaphram but I don’t know what that is. The smog delete has been done on this bike as well as a slip on dg exhaust and the side cover has a bunch of holes drilled in it exposing the air filter. The battery has also been relocated. My question is what jetting should I have at 2000 feet? I am planning on opening up the carb to see what the idle jet and main jet are and if they were even changed from stock. Also if someone knows about the air cut being hooked up to vacuum and can supply pictures that would be very helpful. I know that the smog block off kits just plug the vacuum holes and the air cut usually gets disconnected. Thanks. 

    • By Chowell
      Cargo rack for Honda XR650l.
      New condition. No scratches or damage. New $199 
      See manufacturers website for detail.
      https://cycleracks.com/ProductDetail/tabid/87/ProductID/1/Default.aspx
    • By Pcolamotorhead
      engine parts and misc. parts. Airbox, Electronics, Brake parts.
    • By Pcolamotorhead
      Parting out almost an entire bike. Frame is gone, CDI box, and Wheels, Gas Tank, Headlight & Front number plate. Complete unassembled engine with 9611 miles on it. 90 pounds of compression at cranking speed. According to hondaprokevin.com this is what it should have.  Checked the compression with 3 different gauges.   Valve clearance is good which indicates no cam or rocker arm wear. Oil did not look too bad that came out of it. Corbin seat, Big tube header pipe with Super trap muffler, and just about all the other parts.  Shoot me a message with what you are looking for and I will be happy to take pics and send them to you along with a price. All items are buyer pays the shipping.  Also have some 1996 Honda XR600R parts. Engine cases, Electronics, Etc.  $850 for the motor and you pay shipping, Starter motor not included.