Hello everyone. I'm about to replace the valve seals on my 85 Fj1100. Will also be doing a top end overhaul.Piston #1 has a lot of carbon buildup compared to the rest. I suspect this is where im having valve seal issues. Here's a picture of the head. Is this normal or am i having burnt valves? There's no damage to the head or valves they just have a lot of carbon buildup. Thanks
(http://fjowners.com/gallery/11/1156_17_05_19_8_17_00.jpeg)
Put a strong flashlight in the intake ports and exhaust ports, now in the dark, can you see light leaking in around the edges of the valves?
Usually I'm a oem guy, excepting valve seals. The Viton valve seals RPM sells are superior to oem seals.
http://rpmracingca.com/proddetail.asp?prod=Head%3AVSS&cat=39 (http://rpmracingca.com/proddetail.asp?prod=Head%3AVSS&cat=39)
(http://rpmracingca.com/prodimages/large/Head%20VSS-1.jpg)
Quote from: fjman on May 17, 2019, 09:27:20 AM
Will also be doing a top end overhaul...
(http://fjowners.com/gallery/11/1156_17_05_19_8_17_00.jpeg)
How are the rings? That looks more like this bike has been burning oil... 1 is bad, but there's quite a bit of carbon the others as well.
Frank
here's an update. I had them blasted. Valves are currently being polished. :morning2: (disregard the sparkplug. I was supposed to remove them but rather I took a pic first anyway)
(http://fjowners.com/gallery/11/1156_23_05_19_1_19_08.png)
(http://[url=http://fjowners.com/gallery/11/1156_23_05_19_1_20_00.jpeg%5Dhttp://fjowners.com/gallery/11/1156_23_05_19_1_20_00.jpeg%5B/url%5D)
(http://fjowners.com/gallery/11/1156_23_05_19_1_20_00.jpeg)