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Austinsevenfriends
Origins of a 9E1-AF cylinder head - Printable Version

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RE: Origins of a 9E1-AF cylinder head - Ruairidh Dunford - 03-09-2023

(31-08-2023, 08:13 PM)Ruairidh Dunford Wrote: Can you elaborate on what a “Works Only” car is please, Chris?

Can anyone help with this, please? Daisy has some 9B parts on her Sports Van...

RE: Origins of a 9E1-AF cylinder head - austin - 03-09-2023

My assumption would be that David means they will be "special" parts that were only on the "works" cars, IE GW 82, Grass Hoppers etc.

What parts are they? (And pictures would be ace.)

RE: Origins of a 9E1-AF cylinder head - Ruairidh Dunford - 03-09-2023

Thank you, Austin.

I will let you know, not very many, so don’t get too excited!!

RE: Origins of a 9E1-AF cylinder head - Lowespeed - 04-09-2023

I wonder if anyone has an idea what this head came off. Number reads 9B 1175 or 8


.docx   Head 2.docx (Size: 1 MB / Downloads: 57)

RE: Origins of a 9E1-AF cylinder head - Nick Lettington - 04-09-2023

(04-09-2023, 06:52 PM)Lowespeed Wrote: I wonder if anyone has an idea what this head came off. Number reads 9B 1175 or 8

Hmmm it doesn't look a bit like the replica Gr*sshopper head on Tony Betts website.

RE: Origins of a 9E1-AF cylinder head - Robert Foreman - 05-09-2023

What does the combustion chamber shape look like?

RE: Origins of a 9E1-AF cylinder head - Lowespeed - 05-09-2023

The head is thicker than standard heads and need longer studs to fit. Interesting swirl patterns formed in the carbon; used of blown engine.

   

RE: Origins of a 9E1-AF cylinder head - Robert Foreman - 05-09-2023

Thanks Andy, 
 have you measured the combustion chamber volume? 
  Best wishes, Robert.

RE: Origins of a 9E1-AF cylinder head - Lowespeed - 07-09-2023

The combustion chambers averaged out at 40.8cc; giving a combustion ratio of around 5.6.

RE: Origins of a 9E1-AF cylinder head - Alan - 07-09-2023

I’m wondering if it’s a Gordon England creation, but not sure how that squares with the B part number