Posts: 2219
Joined: 8/5/2015
Location: POL
Anyone replaced the rubber o-ring in the stock RM250 expansion chamber (where it slides into the exhaust port)? Suzuki charges around 30$ for an oring which is pretty ridiculous...
I was wondering if a normal o-ring in the proper size would fit and seal the exhaust to the head well. Also, was if a normal o-ring wouldn't melt. I believe it's pretty hot in there...
Posts: 1729
Joined: 8/25/2015
Location: Mansfield, OH USA
Usually those come in top end kits with the piston and gaskets and all that. So maybe buy a kit and do a top end and boom, win win.
You need a specific type of material to withstand that kind of heat. Also you need the thickness and diameter of the ring to be correct. Mcmaster-carr might be your best bet.
Or buy a $30 one to be safe.
2009 Kawasaki KX450F
2009 Kawasaki KX250F
2002 Suzuki GSXR 600
Posts: 112
Joined: 5/16/2015
Location: GBR
Don't know the year of your bike, but I have top end gasket sets including exhaust orings on my website.
www.karlzracing.com
Posts: 2219
Joined: 8/5/2015
Location: POL
Acidreamer wrote:Usually those come in top end kits with the piston and gaskets and all that. So maybe buy a kit and do a top end and boom, win ...more
I already have a gasket kit for the entire engine, as I need to split the cases anyway. I didn't even think about looking for it there...
Thanks guys!!!
Posts: 205
Joined: 10/9/2015
Location: GBR
You should be able to find parts fiches with the o-ring sizes listed on some sites. Partsfish do if I remember correctly. Or aftermarket pipe manufacturers for other two strokes, like Arrow or Yasuni, list them separately. Maybe try looking at scooter and moped parts sites.
