CT90: Need advice from engine experts

[skiri251]

Looks to me like the valve may have been set too tight to allow it to close.

Sorry, missed this one.
I think I set the valve lash correctly before but I will make sure the next time.

 

[54Greybeard]

put the head back together. Pour kerosene, turpentine, mineral spirits or what ever, in combustion chamber. If it holds for 30 seconds or more, put it together and see how she runs. It's not quite a flat head Ford but it isn't a Ferrari either. They tolerate a lot. Play with it, if you like it, go for the big bore later. Versions of this engine are still in production, you can find anything you want for it. Have fun with it!

 

[paddy.shadow]

These guys know how to keep stuff running one way or the other.....I love all the suggestions!