Classic cars forum & vehicle restoration.

halftonvan

Hello, I am a new member to this forum, but not new to browsing and looking at the fantastic work that you are all doing in keeping our motoring history alive.

I am not sure if this is the correct place to post this query but here goes.

I came across an old sidevalve cylinder head whilst going through some of my old stuff in store in my friends barn. I forgot it was there.
It is 4 cyl and appears to have never been used. Although there is some surface rust on it, it still has some of the protective paper attached to the head face.
There isn't a makers name on it just some numbers 1G1147 SM cast into the head. It is 14 1/2" X 6 1/2"

Any help on identifying it would be most appreciated.

[photos fixed RJ]

exbmc · Posted: Thu Feb 21, 2013 4:52 pm Post subject: Old head

Can't identify the head by looking at it, but the cast-in number 1G1147, sounds like an old Morris part number.The combustion chambers have the makings of the BMC heart shape. Or on another track, SM might be Singer Motors?

peter scott · Joined: 18 Dec 2007 Posts: 7223 Location: Edinburgh

Looking at my gasket book the pattern appears to be an Austin "Ten" 1932-42 and GS1, GV1 & "M" Utility 1945-47

Peter

_________________
https://www.nostalgiatech.co.uk
1939 SS Jaguar 2 1/2 litre saloon

halftonvan · Posted: Thu Feb 21, 2013 9:06 pm Post subject:

Thank you both for taking the time to reply. Looks like you may be right Peter, it does look like the one in your photo and is a starting point.

By the way had a quick look at your photos. The one taken from inside the car looking out out is superb. Very nostalgic.

colwyn500 · Joined: 21 Oct 2012 Posts: 1745 Location: Nairn, Scotland

At first look that does look Austin 10 and 1G does appear on a lot of part numbers from that era.

If so, it would be later than 1938 because the water holes were previously round not oval.

For a short time after this change the head looked like your castiron one but was made of alloy. The combustion chambers were slightly more complex too. If it is a 1939, ish and onwards head, it tended to be a retrofit to the alloy head engines. Some people put these on the round hole blocks but you then have a gasket choice and possible water seal issue
Are you selling it?

halftonvan · Posted: Thu Feb 21, 2013 11:36 pm Post subject:

Thank you Colwyn500.
This forum is a mine of information.
Looking at the photos it looks rustier than it is. The sparkplug threads are fine and I would think the head face just wants a good clean or slight skim.

Yes, I will be selling it sometime soon and would like it to go someone who will make good use of it in a restoration.

Handy to know what engine it fits though.

Colin

halftonvan · Posted: Fri Feb 22, 2013 12:06 am Post subject:

Just been searching the internet for Austin 10 and came across a video on youtube of a chap talking about the head removal. It looks like the same head on top, but his head is the round hole version. The waterpipe on top of his looks longer.
Picture below compares. My one is on the blue towel
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