Cylinder Head to Rebuild but slot near chamber

[erickmarciano]

Hi all got a cylinder head I want to rebuilt by found this slot near the combustion chamber .is this normal?this is only on one chamber.
Thanks

[ja17]

Hello,

If that slot goes into the coolant jacket it is a big problem and will have to be repaired.

Be aware that if the slot is from coolant corrosion damage there may be other  areas in the head which are corroded thin and weakened but have not yet broken through.

[erickmarciano]

it looks to perfect to be corosion . showed it to the machine shop and he thinks it is part of the head ...anyone have one to compare?
Thanks

[ja17]

Hello Erick,

I have seen hundreds of heads.  None had a slot like this.  Possibly a broken ring or stray part was shoved up into the head by the piston. ? !   

It should not cause any problems as long as it does not go into the coolant jacket.