Dimples around intake valve?

[Ram06_1500]

I forgot, I do believe I was given like this. Had heads redone before my build along with pressed in seats. Is it common to dimple around valve seats?

Btw I’ve included 4 individual pics of each cylinder. Same pattern. Rather then sending this to get redone is there a company that sells pre eagle cylinder heads with fixed valve seats or pressed in already?

 

[jws123]

While I have not seen this personally however maybe its to help hold the valve seats in? I am sure some older members will reply ahaha.

 

[18CrewDually]

It's called "staking" the valve seat to help eliminate the chance of dropping a seat on heads that are prone to.

 

[06 Dodge]

I forgot, I do believe I was given like this. Had heads redone before my build along with pressed in seats. Is it common to dimple around valve seats?

Btw I’ve included 4 individual pics of each cylinder. Same pattern. Rather then sending this to get redone is there a company that sells pre eagle cylinder heads with fixed valve seats or pressed in already?

Looks like rebuilder wanted to prevent the seats from falling out.

 

[Ram06_1500]

Got it, thank you everyone for your help.

 

[jelih]

I'm cleaning my heads right now and mine are staked on all the valves and my first thought, not being a mechanic, was "what is this mickey mouse bs?" But I'm glad that it's not that uncommon. I didn't know that dropping seats was even a thing with these engines (PANIC!), so I guess it's good that I *probably* won't have to worry about it now (calm).

My knowledge on internal combustion theory is limited, but I though sharp points in the combustion chamber would cause hot spots leading to problems with flame propagation. I barely even know what that means, but still.