CNC Machining of Billet Cylinder Head

[JohnxWaynexGacy]

I actually came to this video wanting to see how the coolant passages are machined. Is it even possible?

[Gracana]

@JohnxWaynexGacy That's what I'm wondering too. This head is for an air cooled engine, so they don't have to worry about that... But I'm designing a motor that will be water cooled, and it's impossible to mill the sort of coolant passages and pockets you'd find in a normal cast head. It's going to take some compromises and clever ideas to come up with something that will work.

[1hyllek]

not so much.

[Markitos203]

how did you guys machined the water passages?

[btwbrand]

@Markitos203 Old comment, but a good question. Odds are there weren't any water passages put into this head. It's common to find race engines built for cool burning fuels such as alcohol without any water jackets, or to have their water jackets filled with some stiffening agent. The engine generally starts up, works hard for a few minutes and is then shut down. The added strength and freedom to shape intake ports beyond the limitations of engines components with water jackets is a strong plus.

[promach1]

@Markitos203 This is a air cooled motor

[cncit]

Nice! Would sound better with climb milling only and not bi-directional side cutting!!

[Galfonz]

Wouldn't it be faster/cheaper/more effective just to cut it out with a saw? Say a table saw with carbide tipped blade?

[20GeneStarwind20]

@Galfonz no cause it would never be as caret

[ke5hbd]

Listen to the spindle rpm's. I worked for a shop that loved to rough in rapid travel and max spindle rpm's.

[chippievw]

Could someone rename this to ''billet rough cutting'', thanks.

[BADFISHHHHHH]

how bout no

[jet2067]

I love billet :)

[aadailey]

Cool!

I wish the job shop i work at, would do jobs like this.

We do simple plates with Tapped, and bored holes.