I recently purchased a 13 head. Apparently there are distinct differences in the castings of each year. Only the Month and Day are on the casings.
After Googling this topic, I would like this thread should show PICTURES of the different years and their identifying marks.
I will start with this 13 head. It has a casting date of 5/13/13. Only the month and day are shown. The year is determined by the square casting marks on top.
I am told that the early heads do NOT have the "Made in USA" cast into them. There are also compressing differences.
Here is the tightening chart for reference
My 1910 has the wrong head and I have posted a Wanted Add for the correct head.
Please post pictures and descriptions of your head, with date of manufacturing and compression ration if possible.
My question was answered by a phone call. The 7th edition of the MTFCI Judging Guidelines show all of the differences in head design on pages 78 & 79.
I would still like to see pictures of your heads.
If you come across them Rod, just to confuse you some, Canadian low heads only have the Ford script on them.
I guess we're not supposed to tighten the 15th bolt?
This is the head on my 1910 #24805. Note the date over the Ford script.
I have a 5-13 head with the square casting mark and without Made in on it.
The casting date on my block is 5-15-13.
Sorry no picture hate doing the resize thing.
Heres the info you need from the Rhoda parts books and this is in the Judging Guidelines. Of which I recommend purchasing it. As its helped me with parts.
Well, I edited and rotated the photos so they wouldnt come out sideways. Seems they did anyway!
easy way to tell is the bolt boss for the water neck,they enforced them in 11. charley
I have posted this one before but will post it here for easy reference for someone. This is on my Jan. 1913 touring. Block was cast 12-24-12, head has 1-20-13 cast date. I am told it was not common to see the entire date like this.
Next is the head I have for my 12 touring. I don't know if its right but was on my 12 when I got it and looks right to me until someone tells me different.
Bob, your 12 head is correct for your 12.
Well, if your block is older than august anyway.
12 Block I have was cast in Jan. but has an April vin number if I remember correctly. Interesting thing, this 12 head and the aluminum intake and original exhaust manifold and a Kingston 4 ball was on a 26 engine in the 12 touring when I got it.
Sounds like your head is too late for your block Bob. I can post or email the pick of what you need.
I cant remember but may be around that time some heads had the threaded ports for the primer cups. Now that would be neat to have!
Coming a bit late to this thread..
Here's my Aug 09 head. The white mark isn't a crack, I didn't notice a thread lying across it.