rkeywood

Check the neck size/thread and try Merlin Motorsport. They do knurled spares for their tanks which might just be the same

Looks like a 105E mount - see if this is it and the dim's match up

As you say, looks like a 7T. Here’s the speedo drive list for the 3 & 4 rail Ford boxes with 13” wheels if it helps in any way. What diff and wheels/tyres are you using?

IIRC they were Gates hoses at one point. Might be worth contacting them - the contact form on their website usually gets a quick response. TBH as the Redline hoses are only around £25 it’s best just to get one them. The Caterham red silicone hoses at about £40 are good and not that expensive. The black and blue are more for some odd reason.

Glad that’s helped identify the issue. You should be able to get a new one - try the classic ford (escort, capri etc) specialists and gearbox rebuilders. AFAIK the type 9 and earlier boxes use the same drive so more options when you Google. There’s a German guy on Ebay selling metal shaft remakes - I’ve no experience but worth a punt.

The instructions I had when I got mine (1991?) were to cut a 1" hole. Working off the bracket and mounting holes in the chassis you can mark the centre of the bit that comes through the skin on the inside, drill a pilot from the inside, then use a conduit box cutter for the hole from the outside. You can also flip the brackets L to R, temporarily bolt them in facing inwards and use them as a guide for the hole position and a final check before drilling

I'll pop mine in the post mine for you to try. The shaft measures 0.311". I've an old paper with the oil seal dims listed as 5/16" X 0.635" X 0.27".

I can't recall any of the Type E box drives being brown so could be a Type 9 which, I think, are interchangeable. Needs a tooth count on both the gear and pinion to see where you are with your diff / tyre combination. The original Caterham selections for the Ital diffs above assume a 7 tooth pinion and 13" 185/70 tyres The spare I have is a 25T and happy for you to borrow it to check the oil seal - message me with your address if you want to do that. Here's the original Ford schedule for the various drive combinations if it helps

I've not had a problem with the Burton supplied oil seals but the speedo drive gear can be a problem. Is yours the original plastic one? If it needs replacing they can be hard to find new or secondhand. Steel ones used to be available from Burton (and others) but don't think they are any longer. I think I've a spare original type but not sure many teeth it has. What's yours? The regular Ital axle/diff drive gears are: 3.64 22T original Ford pt no 1546878 White 3.89 24T 6011062 Green 4.11 25T 1546879 Blue I think there's a 23T (Black?) as well which is used with one of the Ford diffs. The pinion gear can also be changed (6, 7 or 8 tooth) so you can get some odd combinations where people have juggled with the gears to an accurate reading with different diff and tyre combinations.

This might help: VTA info.pdf Rob Morley at Protune Racing is the go to for VTA info - he was, I think, the main engine man at Vegantune

Try speaking with PowerTrack. Robert

I'm not sure about 'calibration', the tricky bit is setting the orientation of the float arm and angle of the float so it sits in the slope at bottom part of the tank. Once you've done that you can adjust the float arm length (and pivot height, if that type of sender), so there's correct travel from bottom to top. If you do it in situ with liquid then you end up chasing your tail - you get the bottom set, then the top is out, or you hit the baffle etc. Doing this in a mock up where you can see things is a 5 minute job. A lot of the older installs just had the travel set at the mid point height of the tank with the float arm parallel to the long side of the tank and left it at that. As a quick improvement, and starting point for trial and error, you can bend the float arm to angle it forward so the float almost touches the front of the tank, tweek the angle of the float on the arm so it's the same as the slope on the tank and increase the travel for the height at that point. The Caerbont and some of the universals need soldering once set and cut making adjust after more of a pain

After several attempts to make the original VDO sender in my car read accurately by trial and error I went for the Blue Peter solution - make a section of tank out of corrugated card (actually correx) and set it up off the car. To get the warning level I've just put a gallon in and dipped with the sender out to find the level (I've probably got this written down somewhere). I've done this subsequently with a generic vertical rod and float arm type and a top pivot type and it all makes sense when you can see it! You'll probably need to twist the float and, depending on the type, you may need to bend the arm or rotate the sender on it's mounting - the Caerbont (Smiths Classic) universal, for example, works best rotated one screw hole.

OK, BM your address and I’ll sort it Rob

Those are what they supplied when I got my kit in '89 - I think it must have been lucky dip from Caterham stock or kit buyers got old stock! This photo was shortly after build. If interested then how does £20 the pair plus delivery sound? Rob