//ArrowChat Code
Results 1 to 10 of 10

Thread: Aftermarket 250sx piston

  1. #1
    mmiguy2103's Avatar
    mmiguy2103 is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Mar 2009
    Location
    Fairport, NY
    --
    152

    Aftermarket 250sx piston

    Ok guys I am looking for a new piston for my 87 250sx. I am looking for a oversized piston and ring set. I will then bore the cylinder to that piston. I just want to see what people recommend for a brand to go with? And where is a good place to source one. I am at the stock size now and don't mind what oversized is used.


    Thanks in advance guys



    "Advice is Free, The Right Answer will cost you"

  2. #2
    barnett468 is offline FACT ! I have no edit button Arm chair racerThe day begins with 3WW
    Join Date
    Jan 2013
    Location
    minnesota
    --
    5,911
    You are best off just going the next size up that will clean up the cylinder.

    You should check your valves to see if they are leaking also. One way to do this is spray some brake or carb cleaner into one port at a time then lift the head up and see if it is wet around the valve. You can sometimes also open the jaws on a vice then set the head on top of the vice then spray the ports then use a flashlight if needed to look at the valves.

    Also check the face of the rocker arms for wear. If there is a small depression/valley in the center of them, they are worn and might be bad enough to replace.
    .

  3. #3
    mmiguy2103's Avatar
    mmiguy2103 is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Mar 2009
    Location
    Fairport, NY
    --
    152
    Quote Originally Posted by barnett468 View Post
    You are best off just going the next size up that will clean up the cylinder.

    You should check your valves to see if they are leaking also. One way to do this is spray some brake or carb cleaner into one port at a time then lift the head up and see if it is wet around the valve. You can sometimes also open the jaws on a vice then set the head on top of the vice then spray the ports then use a flashlight if needed to look at the valves.

    Also check the face of the rocker arms for wear. If there is a small depression/valley in the center of them, they are worn and might be bad enough to replace.
    .
    Yeah thanks, I am doing a 100% restoration. Everything is either new or fully restored to new, all new bottom end, all engine cases powder coated with a high temp flat black, all new bearings, new connecting rod, crank balanced, finally got the cases back together and ready to get the cylinder up and going, got new stock valves and valve guides that I was able to find out of a Honda dealer in Washington like 7 years ago. Camshaft in mint condition still.

    So yeah I will def get oversized just want to know what brands people are going with?



    "Advice is Free, The Right Answer will cost you"

  4. #4
    Join Date
    Apr 2014
    Location
    Edmond, KS
    --
    2,531
    I prefer to use Wiseco on all of my rebuilds.

  5. #5
    Scootertrash's Avatar
    Scootertrash is offline Just Too Addicted: Protecting Our Community The day begins with 3WW
    Join Date
    Apr 2011
    Location
    In the sticks
    --
    4,627
    I use Wiseco all the time. Wiseco is a forged piston, Pro-X which is a division of Wiseco makes a cast piston
    Quote Originally Posted by fabiodriven View Post
    Trick the people into thinking they're enacting their own will and you have willing slaves.

    Liberalism suspends the intellect of its victims, while at the same time tricking them into believing that they're smarter than everyone else.


    If we've done business together, please leave me feedback. Thank You!:

    http://www.3wheelerworld.com/showthr...t=Scootertrash

  6. #6
    barnett468 is offline FACT ! I have no edit button Arm chair racerThe day begins with 3WW
    Join Date
    Jan 2013
    Location
    minnesota
    --
    5,911
    .
    I would prefer an original which are still available, but I have used many Wiseco's.
    .

  7. #7
    mmiguy2103's Avatar
    mmiguy2103 is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Mar 2009
    Location
    Fairport, NY
    --
    152
    Ok so OEM is discontinued so I would love to go wiseco but I don't see the 87 250sx model on their site. Is the tax 250 fourtrax the same piston?



    "Advice is Free, The Right Answer will cost you"

  8. #8
    barnett468 is offline FACT ! I have no edit button Arm chair racerThe day begins with 3WW
    Join Date
    Jan 2013
    Location
    minnesota
    --
    5,911
    Quote Originally Posted by mmiguy2103 View Post
    Ok so OEM is discontinued so I would love to go wiseco but I don't see the 87 250sx model on their site. Is the tax 250 fourtrax the same piston?
    You can still get an orig honda piston as I mentioned.

  9. #9
    mmiguy2103's Avatar
    mmiguy2103 is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Mar 2009
    Location
    Fairport, NY
    --
    152
    Checked 5 different sites looking for oversized Honda piston even called 2 dealers and they are all discontinued. If you can show me where they sell them still I will grab one. But I cant find one



    "Advice is Free, The Right Answer will cost you"

  10. #10
    barnett468 is offline FACT ! I have no edit button Arm chair racerThe day begins with 3WW
    Join Date
    Jan 2013
    Location
    minnesota
    --
    5,911
    Quote Originally Posted by mmiguy2103 View Post
    Checked 5 different sites looking for oversized Honda piston even called 2 dealers and they are all discontinued. If you can show me where they sell them still I will grab one. But I cant find one
    I just looked and the first over piston I found has been sold. There is one second over piston on ebay and honda still has the rings.

    https://www.ebay.com/itm/1985-87-Hon...frcectupt=true

//ArrowChat Integreation Code //