Dashnizzle
Proven Member
- 159
- 143
- Jun 5, 2021
-
Montana
Suffered a pretty major valve failure a while ago and I've been trying to sort out the cause for a while now. The head (aside from cams and lifters) was assembled at a machine shop with a full valve job, deck resurface, etc.
I'm more curious than anything about the actual valves that were pulled from the head. One valve has a perfect shear at almost 90 degrees right at the point where the valve stem tapers down before the valve 'head'.
I will also note that none of the valves were binding in the guides. Everything was still loose and pulled easily.
Anyone ever see this? The Machine shop said they weren’t familiar with valves breaking like this and even considered that it may have been as simple as the valve itself randomly failing. Like a manufacturer error of some sort.
I'm more curious than anything about the actual valves that were pulled from the head. One valve has a perfect shear at almost 90 degrees right at the point where the valve stem tapers down before the valve 'head'.
I will also note that none of the valves were binding in the guides. Everything was still loose and pulled easily.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
Anyone ever see this? The Machine shop said they weren’t familiar with valves breaking like this and even considered that it may have been as simple as the valve itself randomly failing. Like a manufacturer error of some sort.
Last edited: