I disassembled a spare head today and was thinking of trying my hand in lightly porting a set.
The intake valve seat looks to be pretty well blended into the intake bowl in stock form.
The exhaust valve seat, not so much.. Is this a casting flaw of this particular head, or is this pretty typical? (see picture - seems the exhaust valve seat is smaller than the bowl.)
Obviously I can't just take the dremel/porting bit to the valve seat.
Is this something that a machine shop can taper in when doing a performance multi angle valve job? or is the only way to correct this by going with larger valves and seats?