Help ID: Cylinder head, pistons, valves: original ?

[Special Coupe Frank]

More pics from the never-ending head-gasket job on my '28 Special Coupe.

Got the head back from the machine shop last week - they had to take 0.015" off to true-it up.

Cleaned the deck, pistons, and valves yesterday, and found what I presume to be original factory parts ? Definitely some authentic Ford parts...

Do all oversized pistons carry a marking on the face of the piston crown ? (found none)

Also, were Ford intake valves marked in any way ? ( no marks on mine)

I'm sure the head has been off my engine before, as I removed a blown copper R-3 gasket, and it was wearing bright shiny head nuts... but I'm kind of sure the pistons & valves are all original. Car's speedo/ odo are working, showing 80,000 miles.

With a piston at TDC, I can wiggle it from side to side at least 1/16" inch; no ridge at the top of the cylinder bore though... the only marking on the pistons is the word "Front" in Ford script, with an arrow through it.

Take a look, let me know what y'all think... (Sorry about the poor cel-phone pics!)

 

[Tom Wesenberg]

It looks like you have enough oil getting past the rings and cleaning the carbon off on part of the pistons. Probably due for an overhaul.

 

[Special Coupe Frank]

Oh, she's definitely due for an overhaul... also found a crack radiating towards the cylinder bore from # 2 exhaust valve seat. ( Probably the source of my combustion leakage into the cooling system.)

I'm trying to determine if this engine's ever been rebuilt before, thus my question if I'm looking at standard-bore stock pistons, valves, etc ?

 

[pat in Santa Cruz]

std Ford pistons I have seen have no " std" mark. I would guess they are std, but why not measure the bore and be certain?

 

[Kurt in NJ]

It very well could be a block that has never been bored, and still close to std at the bottom , it also could be worn .030 or more at the top, it is amazing how well new rings can work in such a worn bore ---for a short time, the ridge would have been cut off the top of the bore each time it was re-ringed.
The crack can be pinned and a seat put in,Hopefully you have the original matched rods and a virgin crank (untouched by a cheapo regrind), I have been using that type of script valve ,never had a problem with them and hard seats.