Mystery High Compression Head

[juke joint johnny]

I bought a 28 engine at a swap meet last month A673===. The head has no name or anything on it just a casting mark C15 which could mean March 1st 1935 so I just thought replacement head . But when I pulled it off the combustion chambers look like a police head shape , But no big B on it or any sign that one has been ground off .
So my Question is does anyone know who made this head ?? I will try to post pictures of it

[Tudortomnz]

John, that is a low engine number, just where did you get it, UK or Continent?
Is it the standard bore, or small bore? I thought the s.b.'s had a different combustion chamber to standard bore?
Some of the earliest Model A's [Detroit] were sent off to Europe for the Dec. '27 showings.
Cheers

[plind]

Originally Posted by juke joint johnny

I bought a 28 engine at a swap meet last month A673===. The head has no name or anything on it just a casting mark C15 which could mean March 1st 1935 so I just thought replacement head . But when I pulled it off the combustion chambers look like a police head shape , But no big B on it or any sign that one has been ground off .
So my Question is does anyone know who made this head ?? I will try to post pictures of it

I do not know where the top is from, but it is not an early top... There is not Water hole on my early top between cyl 2 -3..
You can se it here in this treads on #39 https://www.fordbarn.com/forum/showth...t=52070&page=2

Per

[juke joint johnny]

Tudor I may have confused the Issue but there are 3 more numbers after the A673*** so it checks out on Vinces site as November 1928 . It is standard Bore 40 hp engine . I bought it at a UK Swap meet We have cars from all over the World in the UK it is probably from the USA but who Knows It's not from Canada as it has no CA number.
The Smallbore engine indeed has a
smaller cobustion chamber but it out lines the smaller piston in the chamber so it's not one of those .
Plind I think that casting number on the head point's out that the head was made in 1935 . did they sell the smallbore engine in Denmark ? I know they did in France and Holland

JOhn Cochran

[plind]

Originally Posted by juke joint johnny

Tudor I may have confused the Issue but there are 3 more numbers after the A673*** so it checks out on Vinces site as November 1928 . It is standard Bore 40 hp engine . I bought it at a UK Swap meet We have cars from all over the World in the UK it is probably from the USA but who Knows It's not from Canada as it has no CA number.
The Smallbore engine indeed has a
smaller cobustion chamber but it out lines the smaller piston in the chamber so it's not one of those .
Plind I think that casting number on the head point's out that the head was made in 1935 . did they sell the smallbore engine in Denmark ? I know they did in France and Holland

JOhn Cochran

John.: I do not think there have been small bore in DK, i knew there have been a few Engines. But i belive they are from later imported RHD...

[Gunmetal blue2]

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What is with the small bore, my engine has standard bore and it has 84,000 miles on it. It was built in July of 1929.

[Tom Wesenberg]

Originally Posted by Gunmetal blue2

What is with the small bore, my engine has standard bore and it has 84,000 miles on it. It was built in July of 1929.

England had a small bore in their Model A's to lower the tax on them. For some crazy reason the auto tax was based on the size of the bore. And I thought we had crazy taxes in this country.

[31 RPU]

Germany also had small bore engines.

[juke joint johnny]

The English smallbore AF engine has a 3" bore, to compensate for the poor performance they upped the compression ratio and fitted 4,55 to 1 gears in the rear axle.

AS Tom Say's All for a crazy tax!!
Then other European countries thought what a good idea!!
and sold them including France ,Holland , Germany and Ireland

Just shows what happen's when goverment's get involved in car production . Have we learned anything ???
I better stop now or this thread might be seen as a political rant instead of a search for info about a High Compression head I've found.