Here it is!
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
That rattle was the lifters/valves floating.
I am half deaf, but I still heard them rattle in the video.
Before I thought about running close to that kind of RPM I would want to install 7.3 turbo valves, probably new valve springs that were slightly stronger than stock and most definitely 7.3 rockers.
If a rocker breaks, which RPM that high is likely to do, then it may turn and knock the keepers out on a valve.
So the the valve drops in to the cylinder and as soon as the piston comes up, you can kiss that block and head goodbye.
Having the rotating assembly balanced would also be a good idea.
Also may want to consider some stronger fasteners for the rod caps.
Sure would be a shame to see a fine engine block turned to scrap because something let go.
Wonder how I know that?
I am half deaf, but I still heard them rattle in the video.
Before I thought about running close to that kind of RPM I would want to install 7.3 turbo valves, probably new valve springs that were slightly stronger than stock and most definitely 7.3 rockers.
If a rocker breaks, which RPM that high is likely to do, then it may turn and knock the keepers out on a valve.
So the the valve drops in to the cylinder and as soon as the piston comes up, you can kiss that block and head goodbye.
Having the rotating assembly balanced would also be a good idea.
Also may want to consider some stronger fasteners for the rod caps.
Sure would be a shame to see a fine engine block turned to scrap because something let go.
Wonder how I know that?
