My project for the inevitable cold Canadian winter ahead of me is to inspect and repair as needed the cylinder head and valves for my W4. I found a few things upon my initial inspection that worry me a bit.
I found a hairline crack between cylinder 1 & 2 extending from the water jacket as shown in attached pic. This is not a performance build so I'm hoping this will be ok but advice from those of you who've rebuilt these before would be appreciated.
I found 1 burnt exhaust valve on cylinder 4. It's cracked pretty good and will need replacing along with the guide.
When I started removing all the valves, they all (aside from the cracked valve) appeared to have a nice shiny face so it looks like they're seating properly. However, I did think the valve margin was quite small. They apprear to have been ground once in the past as well because there's a noticable ridge on the valve face. My service manual only mentions valve length and stem diameter so I don't know what the valve specs are. If someone knows valve specs for an H or W4 (gas) I'd sure appreciate the info.