Machining on the milling machine - Valve seat cutting

Just a basic no frills valve job for a local
Customer. This 12G940 classic mini cylinder head gets its valve seats recut after fitting new guides…..

[@itsst172]

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.

[@williambaisley8594]

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!

[@ACDodd]

It works well just not quite as quick I feel as a dedicated seat and guide machine

[@estebanr.a.6917]

Es usted un gran profesional gracias por enseñar a los que estamos empezando

[@weld-deluxltd7635]

Lovely work, smart tools and clever chap.

[@ACDodd]

Thankyou

[@Mike62501]

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

[@ACDodd]

Thanks for taking time to comment.

[@bad406camaro]

Love the Newen tooling. I have converted a old Winnona seat & guide machine to use the Newen tools Also added a VFD and DRO to help cutter speed with different size valve diameters. and DRO to match seat depths. Really brought back a excellent machine that as original was not suitable for modern heads. Clearly not as fast as a serdi 4.5 or another modern machine but very pleasant to use none the less. Cylinder head supply out of oregon USA or Goodson tools have a quality selection of cutters at great prices and no i don't work for them

[@ACDodd]

Excellent use of an old machine

[@user-iu2ce6ld1p]

What a cool video. Learned alot

[@ACDodd]

Thankyou, please like and subscribe to My channel, thankyou!

[@andrewwilson8317]

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!

[@ACDodd]

Yes guides vary a lot, thanks for your comments

[@Workshopfriend]

Very instructive. Thank you!

[@T0tenkampf]

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

[@jasonbell5905]

Nice job

[@dovemfg]

Very nice

[@bddc201]

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!

[@ACDodd]

The only problem with that on these old A-series heads is the guides are not always vertical.

[@bad406camaro]

The newen tooling ball driver head will make up for minor misalignment, but it does wear the guide pilot more when misaligned. Especially when counterboring for a new seat

[@findtherightbeat]

​@@ACDodd I am not familiar with machine work but would just like to ask how many valve jobs a Newen insert/cutter can do before it requires replacement, thanks

[@ronflood5697]

Seems like you should be checking the spindle to pilot concentricity at the top and bottom of the pilot. You’d be taking a lot for granted thinking that the guides are all 90° in both directions from the valve cover rail which it’s mounted from. I have an air float seat and guide machine and I tweak the level adjustment for each seat a little from one to the next along the line.

[@ACDodd]

The cutter has a ball drive for a reason. That allows for alignment issues.

[@Sternhammer89]

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

[@ACDodd]

Yes it’s all not ideal but it will run ok. This is real world work where everything is not perfect

[@jeromewells151]

What’s the part numbers on your valve machining tools that you need to use for the milling machine?

[@ACDodd]

Contact beam equipment in the USA as discuss your requirements with them. They supplied mine and were most helpful.

[@AndySomogyi]

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.

[@ACDodd]

For inserts I use a piloted single point home Made tool to rough cut the seat recess, then use a boring head to take to final size.

[@AndySomogyi]

@@ACDodd Great, good to hear it works, the boring head. I’m really surprised by how accurate they are, I can easily hit 0.001” specs with just a cheap one.

[@jeffstevens664]

Needs hardened seats for unleaded

[@ACDodd]

Yes you are correct, however customer not paying for that.

[@petar443]

Nice job and good tips. How many Kw, or horse power is this machine ? Can it service DOHC cylinder heads?

[@ACDodd]

Yes it can service dohc cylinder heads but the cutters will only go down to around 1.1” dia on the seat. The machine has a 3hp motor, but I run it derated to 1.6hp plenty of power for seat cutting and head skimming. You will need a proper head fixture to hold the dohc head at the required angles.

[@josepacheco9362]

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

[@ACDodd]

It’s a newen 3d system purchased from beam equipment in the USA.

[@josepacheco9362]

@@ACDodd Preciate it, Thank you!

[@josepacheco9362]

@@ACDodd Do you happen to know the part number by any chance?

[@MrTIGERH1752]

Why did you use cutting oil on cast iron??? Especially with a carbide insert cutter. Tim

[@ACDodd]

That’s a good question and the answer is simple, I get a better finish.

[@robertoudokrapf453]

OLÁ. Considero Vosso trabalho apenas parcial. Mesmo usando corante NÃO se aperceberam que o grau de acento ESTÁ INVERTIDO! ABRAÇOS Roberto Udo Krapf

[@peglegmotoring]

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?

[@ACDodd]

Yes I am his son.

[@TishaHayes]

It appears to be just begging for a couple of passes with a fly cutter.

[@charliewilson8829]

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

[@ACDodd]

Yes a chap called Zilvermann on eBay

[@TTRVision]

after the valve milling every valve is pared to one valve seat ? many thanks and all the best

[@ACDodd]

After cutting the seats they are not matched. Only after lappin are they matched

[@solasauto]

Anyone have a link to that exact set of tools?

[@ACDodd]

Discuss your requirements with Beam equipment in the states

[@gertkristensen6451]

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

[@stumillis7977]

Hi refer to stu Millis comments .

[@mohdasifkhan22]

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

[@ACDodd]

beamequipment.store/premium-precision-ground-3-angle-seat-cutter-sets/

[@stumillis7977]

Sorry you are wrong . I am an automotive machinist of 38 years . I have used many different types of machines and insist that you must set up every seat with the individual guide because every guide is slightly different! Then the most important point is that you must check the valve to the seat . To get this perfect you need to have even movement at all points on the seat and have the seat angles the same or slightly touching on the top of the valve seat by 1/2 a degree up to 1.5 degrees depending on spec's. So if you put bearing blue on the valve very thinly and place the valve in the guide the blue will show you where the valve is touching . As long as the valve guides are not worn you will get an accurate indication. This point is something most people do not know . Lapping the valve should only be done after this is done and because of the thickness of grinding paste lapping is not an accurate check ! Hope this helps .

[@ACDodd]

I blue check every seat I cut, and so far I have not had one that does not get full contact using this method.

[@teamruwetindonesia6665]

10:18 dimana membelibpilot dan cutternya ini dan berapa harganya

[@ACDodd]

It’s from beam equipment in the USA it’s a Newen 3ds kit

[@rdetme4ever552]

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

[@ACDodd]

?