Member Contributer YoshiHNS Posted May 1, 2014 Member Contributer Share Posted May 1, 2014 I had work done on the VF500 head. New valve guide and seats on the damaged valves, and other marks cleaned up. Going to have to replace the valve stem seals now. I can either go with OEM, or try the Viton ones listed on ebay. Haven't found too much information on them, other than a few people tried them and didn't have any issues, but didn't see any high mileage reports. They are half the cost of OEMs, and won't have the risk of them being dried out or old. Any thoughts? Ordering Friday. http://www.ebay.com/itm/HONDA-VF500F-VF500-VF-500-INTERCEPTOR-VALVE-SEALS-VITON-/230452114110?pt=Motorcycles_Parts_Accessories&hash=item35a80432be&vxp=mtr Link to comment Share on other sites More sharing options...
Veefer800Canuck Posted May 2, 2014 Share Posted May 2, 2014 Viton, as a material for seals, is very good. We use them in the oil patch in pumps and stuff because of their chemical resistance. I would definitely try them in a bike. Link to comment Share on other sites More sharing options...
Member Contributer vfrurknee Posted May 2, 2014 Member Contributer Share Posted May 2, 2014 I worked on scientific analytical instruments prior to my retirement and we used Viton O rings in many of our sampling systems. Like Rob said, very chemical resistant. Link to comment Share on other sites More sharing options...
Member Contributer Mohawk Posted May 2, 2014 Member Contributer Share Posted May 2, 2014 Yep Viton replaced most rubber based seals in Diving gear years agao working at much higher pressures (300bar) I've never seen a Viton seal pop on properly assembled kit. They are much tougher than rubber & will probably out live the motor. Recommended in my book. Link to comment Share on other sites More sharing options...
SEBSPEED Posted May 2, 2014 Share Posted May 2, 2014 I used those when I rebuilt the head of my CB900. They worked very well. Lots of guys on the CB board have used them with success, I would recommend them. Link to comment Share on other sites More sharing options...
Member Contributer YoshiHNS Posted May 2, 2014 Author Member Contributer Share Posted May 2, 2014 Done deal then. Link to comment Share on other sites More sharing options...
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