How does one seal the valve chest on an early block (with screw in core plugs) when there is only a very small land along the upper edge?

Is this the first time Austin Sevens have been mentioned in Parliament?

Sarah Gibson's maiden speech (Dave Williams wife). https://www.youtube.com/watch?v=zBHRaOhYD9E

Hopefully a worthy old car enthusiast successor to Peter Butler!

Big article in The Times today on the launch of the two seater electric Austin. Getting hugely positive comments. 

Many will have seen John Stubbs and his prototypes at the Centenary and at Nat A7 Rally.

This link should get past the paywall.

https://www.thetimes.com/article/5e37f05...5207abe51e

Light Car Magazine, October 26th 1923 - cars for sale. Nearly a year's production but just four examples of the Seven for sale. Some other interesting models as well. Click the images twice to enlarge.

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I've returned my Chummy to 6V from the previous owner's 12V set up.
Everything is fine except for the clock which is 12V
Can I safely use one the variously advertised converters available from EBay etc or are there hidden problems with doing that. To avoid constant time resetting I'd plan to power the clock from a permanent (fused) battery connection.

Does anyone know the best way to seal a core plug which has a corroded seat?

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It would seen that I have quite a bit of slack in this gearset. The gears themselves look OK and not worn thin. Damned difficult to get an actual measurement with these gears in place

Would anyone know what sort of figure for the mesh of these gears should be or any reason why this might be?
Any thoughts would be most appreciated.
Thank you
Bruce Shearer A7CV

A supercharged Ulster - or a Bugatti? An interesting selection of Austin 7s for sale - s supercharged Ulster for 52 guineas (£54 : 10s : 0d) or, a choice of two Bugattis for a little more? Take your pick.
A surprising number of "specials" on offer, too, including a 'rebuilt' chassis.

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The first twin-cam article? The Light Car, March 20th 1936. This was a two-page spread that I've digitally restored and joined as a single A3-size page.
If you'd like a wall-sized banner, you can download a high-resolution (45 Mb) copy from https://lathes.co.uk/austin7/first-twin-cam-article.jpg
Click the image below for a readable, higher-resolution view.

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I am having to get a block re-bored following the seizure of the engine in our Pearl on the way to David Nightingale. I thought I would take the opportunity to de-rust the water jacket. I am considering using  Bilt Hamber - Deox-C. Does anyone have any experience or alternative suggestions?
Martin