Colt Case Ingersoll Garden Tractors

Seems like it should not have moved Eugen, by the discription on the ad.

Noel

Now I'm wondering why the insert didn't read the instructions!

Ok, on a serious note, here why I think it failed. The insert isn't flared, but it has on the top outer rim no thread, rather a knurled surface which should stop the insert from travelling lower down the hole. I must've trusted this feature and used just simple blue thread locker instead of jb weld. The insert was sticking about 1/8 below the head surface, enough for the valve to hit it. It could've been worse and damage the head, as the cast isn't thick at all in that area.