Head Identification

[bob46320]

   
I have a spare cast iron head with the following cast numbers,  single bolt water outlet.  What sort of engine was it from?  
Can anyone identify it please

Bob

3  11  8

1A 670

{  AF  }   ignore the curly brackets
{   2   }
{   T   }

[Tony Press]

I have a spare cast iron head with the following cast numbers,  single bolt water outlet.  What sort of engine was it from?  
Can anyone identify it please

Bob

3  11  8

1A 670

{  AF  }   ignore the curly brackets
{   2   }
{   T   }

3rd November 1928 ?

[bob46320]

I have a spare cast iron head with the following cast numbers,  single bolt water outlet.  What sort of engine was it from?  
Can anyone identify it please

Bob

3  11  8

1A 670

{  AF  }   ignore the curly brackets
{   2   }
{   T   }

3rd November 1928 ?

I thought a '28 had petrol tap primers in them??

[Tony Press]

I have a spare cast iron head with the following cast numbers,  single bolt water outlet.  What sort of engine was it from?  
Can anyone identify it please

Bob

3  11  8

1A 670

{  AF  }   ignore the curly brackets
{   2   }
{   T   }

3rd November 1928 ?

I thought a '28 had petrol tap primers in them??

The head 1A 670 (Part No. BC 82 ) was introduced in 1933 (with slightly raised compression), so is the date number actually 8 11 3 - 8th November 1933 ?

The earlier low compression head with tap primer plug holes I believe was 1A 684 (Part No BC 28) - I can't find any listing for a later 'intermediate' low compression head without primer holes used before the 1A 670, but I am sure there is one.

The later 'high compression head of 1936 is 1A 911 with the two hole water connection.

[Bob Culver]

Thanks Tony

When the topic was last raised there seemed little awareness of the change in c.r about 1933. The curious thing is that contemporary road tests (and present owners) seem to report a better performance from the generally RN updraught low comp cars than the RP?! Maybe at revs the lc breathes better, despite carb.Usual quoted bhp seem not to be the max.
I wonder if the crank is cracked?

[Mike Costigan]

The AF 2 indicates it was cast in Austin Foundry No 2; I don't know the significance of the T.

[Ruairidh Dunford]

That date looks to be 3:11:3 to me...

[Ian McGowan]

I have a spare cast iron head with the following cast numbers,  single bolt water outlet.  What sort of engine was it from?  
Can anyone identify it please

Bob

3  11  8

1A 670

{  AF  }   ignore the curly brackets
{   2   }
{   T   }

3rd November 1928 ?

I thought a '28 had petrol tap primers in them??

My LC head with brass blanking plugs in what had been intended for priming cups is 1A38  J3 (and also AF2). I believe it to be early 1929 in keeping with the rest of the engine.

[Ruairidh Dunford]

Some years ago Malcolm Watts asked me to look through all our L/C heads to see if there were any dates near his 1929 RK - we have several hundred of these heads and not one was dated 1929, has anyone ever seen a ‘29 casting mark in head?

Our July 28 Chummy has the brass plugs in it’s original head.

[AustinWood]

My March 1929 RK has its original engine with number stamped on all major components.
The cylinder head has a number on the front face which is not an engine number but no date mark at all.