I have some Ford made 1.923 intakes that have a dish shape in their middle, and some other valves apparently not made by Ford without the dish.   The Ford valve required 30 drops of an alcohol solution to fill the dish, which would be very close to 2 cc I think.  Does this match other's findings, and do the stainless replacement valves have the same contour or are they flat?

This involves a set of rebuilt 113 heads I picked up last week.  Found stainless exhaust valves with new seats, and checked one spring installed height which was 1.786.  There are new guides.  Intakes are reground Ford valves with very thin edges, no seats, and pretty deep down.  One intake spring installed height was around 1.83 -1.84, forget exactly.  CC'd one combustion chamber and it is 74.  Got to looking further at the intakes and the dish thing came up.

The 113 set is kind of strange.  It looks like they stopped and didnt finish the job.  Stock springs, and not a single spring shim.  The heads will eventually sit on top of a new 292 turned into 312. 

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.