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Yes but the difference is it is common practice for a camshaft to have an internal oil gallery feeding the bearings. Can gun drill this no problem because the accuracy and tolerance isnt critical. You are right, I could buy hollow shaft pre ground or grind it myself. Thats not the difficult...

Yes the original (for this particular engine) used a finger follower. Image below There are a few issue with it that has lead me to try and modernise/simplify it. #1 The cam box is a thin complex casting. #2 The pivot point for the fingers is an oil shaft that runs the entire length of the...

Thanks for the information RodRico. I definitely dont plan to use nitrided Aluminium for any of the cam parts. The cams will also be custom so can be made of my choosing. I would pick the cam to be the hardest material because of this. The thing I am restricted to is the position of the cam and...

So the original assembly has a finger follower. Thats a good solution but the cambox is a complicated casting. They are also about 800mm long so the oil feed tube (also the pivot for the rockers) is extremely long and not easy for me to machine. Im restricted to having the cam and valve...

By Al do you mean aluminium? I plan to use aluminium for the boxes that the cam and bucket run in. Plan for steel for both cam and bucket. The question is what steel. It looks like nitrided EN40B is common for high quality cams. Also 8620, 5160, 5150. Thanks for that. Shim on bucket is...

Thanks for the replies. Can I use the same material and hardness on both cam and bucket? Should really have 1 harder than the other I would assume but does that need to happen with Nitriding? Ideally yes but I am having trouble finding some. I need 44mm diameter. The application is...

Im building an engine and require custom valve buckets. (Cam running directly on top of the bucket) Couple of questions: What material and harness is normally used for a bucket? They are going to run in a billet machined cam box. What is a good Aluminium for cams and followers to run directly...

Im building an engine and require custom valve buckets. Cam running directly on top of the bucket. Couple of questions: What material and harness is normally used? They are going to run in a billet machined cam box. What is a good Aluminium for cams and followers to run directly in without...