Machining on the milling machine - Valve seat cutting

Needs hardened seats for unleaded

I wanted to find the center as close to the seat as possible, angle error from the seat and up, the valve came to sit offset

Lovely work, smart tools and clever chap.

Nice work. Lucky to have an optical centre finder that magnifies the holes and allows very accurate centering on the valve guides. Have found some guides that were out of round, but customers not wanted changed! Like you said,lot of leeway in factory tolerances!

Great information thank you!
I’d like to attempt this the first time for my old 1959 diesel International B275 tractor. Since it’s only a one of, as a retired machinist it shouldn’t be a problem, will make my own carbide tooling and one angle at the time, 45 degrees first and using boring head.
The valves I’ll be grinding also.
Question ..do all seats in the head need to be the same depth?
Thank you!

Can you get the cutting inserts for this in the UK?

Speaking as a machinist with 37 years of experience; you don't have to be nearly that precise locating those valve guides. You don't even need the indicator with the valve cutting fixture being used. Just chucking up the mandrel and easing it into the valve guide hole and then taking down the numbers for the position would be much faster and more than precise enough for this purpose. Cheers from the US!

He slid the valves down that “jig” with the set screw rubbing and is ruining all his efforts.

Did you cut those for unleaded hardened seats?

I also have a milling machine, and want to cut my Volvo heads for hardened seats. I'm thinking about using my plain boring head to cut the pockets for the hard seat inserts.

Customer is foolish because we all know blending to chambers is always done to maximize air/fuel mix in and exhaust blow down out.
I really like your video! At 72 now I used to build racing engines starting in 1967 and even did Road race Mini heads using David Visard’s new then book on porting Mini’s. Plus I did a lot of work for a guy who worked on race Triumphs 4 and 6 cylinders.
Nice work Mate.
Mike from Sevierville TN

Hello brother can I used moter cycle head used this how much cost this tool

Wow was that cylinder head found in a pond with all that pitting? On a more serious note are you related to charlie from the MOC?

Very nice

That’s a great idea, where did you get the tool to do the job?

An excellent video showing the capabilities of the milling machine as a seat and guide machine. I would imagine the DRO makes centering the quill with respect to the pilot a lot easier. Well done!

Thank you so much for sharing your incredible skills. I was looking for long time finding a proper way to machine valve seats on my milling machine.

Great instruction on the use of the tool. I was looking at the Goodson system which seems similar to Newen

Nice job

Very instructive. Thank you!

Another nice informative video. When the seats are recessed like that, I guess the difference is taken up when adjusting the rockers?