The following warnings occurred:
Warning [2] Undefined property: MyLanguage::$archive_pages - Line: 2 - File: printthread.php(287) : eval()'d code PHP 8.1.28 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/printthread.php(287) : eval()'d code 2 errorHandler->error_callback
/printthread.php 287 eval
/printthread.php 117 printthread_multipage



Austinsevenfriends
Cylinder Head Query - Printable Version

+- Austinsevenfriends (https://www.austinsevenfriends.co.uk/forum)
+-- Forum: Austin Seven Friends Forum (https://www.austinsevenfriends.co.uk/forum/forumdisplay.php?fid=1)
+--- Forum: Forum chat... (https://www.austinsevenfriends.co.uk/forum/forumdisplay.php?fid=14)
+--- Thread: Cylinder Head Query (/showthread.php?tid=2666)

Pages: 1 2

Cylinder Head Query - Chris Garner - 17-04-2019

[attachment=6134     ]Dave Armstrong's excellent Speedex webpages on Special Cylinder Heads shows an early head of unknown provenance. Enclosed is a photo of an identical head which has come to light. Dave suggests the head may be experimental. The plugs are housed in very deep recesses and the combustion chambers are very deep over the valves. One of the core plugs is missing showing the walls of the water chambers to be thinner than normal. Although very unclear " 9C " could be cast on the upper surface.
Any ideas chaps?

RE: Cylinder Head Query - Amilcar John - 17-04-2019

Clearly not designed to provide high compression. Could this be for a blown car?

RE: Cylinder Head Query - Ian Williams - 17-04-2019

I believe its a Brooklands head I would be interested i purchasing if it is for sale

RE: Cylinder Head Query - Austin in the Shed - 17-04-2019

What does the top side look like Chris ?

RE: Cylinder Head Query - Rogerfrench - 17-04-2019

My first thought was Brooklands, too. Early primitive plug position rings a bell, designed more to protect plug than for optimum combustion. Later and better designs were much closer to the exhaust valve.

RE: Cylinder Head Query - Ruairidh Dunford - 17-04-2019

I had one of these many years ago - I was told it was for a supercharged car but Brooklands sounds more exciting.

RE: Cylinder Head Query - Chris Garner - 17-04-2019

    As requested

RE: Cylinder Head Query - Ian Williams - 17-04-2019

Ruairidh, I believe they did use an almost identical casting on supercharged Ulsters, although probably with a lower CR, so you may well be correct.

RE: Cylinder Head Query - Amilcar John - 18-04-2019


.jpg   BrooklandsEngine.JPG (Size: 106.28 KB / Downloads: 260)

RE: Cylinder Head Query - Chris KC - 18-04-2019

I reckon you've nailed it John!

Just out of curiosity what is your source?