Unless it is actually a small vent /breather that has been added to the top side...

AS site showing where two gauges can be added--

Tach cable ends look to be quite a bit longer at the ends. Check out the photo's on Abingdon Spares site here: https://abingdonspares.com/search?type=article%2Cpage%2Cproduct&q=tachometer*+cable*+TC* So, looks like the tach cable ends stick out quite a bit more than on the speedo. Here is a picture ...

If someone is intent on stealing your TC, the simplist method would probably be to winch it onto a trailer. That is, if they can figure out how to release the parking brake. Jumper cable to get around a keyed cutout would take as long is it takes to peel off insulation with a knife. The only problem...

Interesting. Doug is usually more accurate on things like that. BR190, BR192 and BR196 are all the same tin can shown.
https://fromtheframeup.com/collections/brakes

The master cylinder and tin can reservoir shown are identical for TA TB and TC. What screws on to one end is different.

I have always had good luck listening to the advice of an automotive paint retailer (Ned's auto body supply in Concord, CA). I tell them what I am doing and what equipment I have available (HPLV or LPHV gun etc) and they have never steered me wrong. From paint amounts to sandpaper supplies and paint...

Take note of the current coolant level. That is where you want to keep it. When overfilled it will behave as you describe on shutdown. Nothing wrong. 75C operating temp is good, and probably right where the thermostat was keeping it.

I would start out with just some sort of breather on the valve cover hole, and run the draft tube. After you get it running properly you can start experimenting with oil separators, check valves or whatever- if you like. I notice on the Moss page for the supercharger they make no mention of starting...

I fill it so the level is below the neck.

Doug's re-creation of the gas cap internals is quite a bit different from the original design. Note the much simpler original "ribbed washer" design and lack of a nut to hold it all together. Looks like Doug's ribbed washer is a smaller diameter and the entire sealing arrangement has been modified. ...

Steve- As I recall the TTT2 online registry had info on a couple thousand or more TC's, and the other T-type listed seperately. Some info old and sparse, and many cars that were more recently added by owners, inclluding mine. It included things like pictures, chassis and engine number, original and ...

Some of that info sounds like the sort of thing that the TTT2 registry might have contained. That registry had a large number of TC's, along with some interesting (self reported) info on individual cars. Anyone know what happened to that registry?

Fitting a bi-directional transil inside the fuel pump will extend its life dramatically, and render it positive or negative ground. With fresh points and a transil, they will easily outlast the life of a new diaphragm and require no maintenance to the points. https://ttypes.org/extend-the-life-of-yo...

Rob- I can only comment on TC corners. Pretty confident this one is factory. No signs of writing. Note the special split pin type rivet fastener and washers. FTFU seems to have a good reproduction. RU120 https://fromtheframeup.com/collections/rubber/products/ru120-corner-set-bonnet The rear axle che...

As circuit boards like these age there will often be just one soldered connection point that corrodes and fails. Sort of along the lines of a weakest link. If you look at every solder point under some magnification on both sides of the board you may spot it. Repair is often pretty simple with a corr...

Is this what we looking for on the TC? Second picture, don't forget the split lock washer..

I used clean brake fluid to clean up mine, but it was an original cover and not a Moss one. After it was clean I coated it with Castrol Red Rubber Grease and then wiped off all the surface residue until it was clean and dry. Amazingly, the rubber is still supple. The rubber cover was supple before t...

Not sure what you are after, but the length of the case, including end plates, for the original dynamo is 6 1/8 inch. That does not include the tach drive/oiler, which sticks out farther. What you will find about the original TC dynamo is that it has a larger diameter than most, and new commutator a...

Jan- Overpressure to the float bowl chamber could cause fuel to get past a weak sealing float valve. If enough pressure/volume then maybe also pushing fuel out the overflow tubes. This could all result in flooding the carbs. When the correct type fuel pump is used, and the float valves are in good s...