33 minutes ago, anthonym said:

Unlimited thanks to revilla for constant help and endless patience. 

Well done, Andrew. Decus et Tutamen.

Jonathan

Wasn't he an Egyptian pharaoh 😉

it means both a shining example of excellence and a steadfast source of protection, with which I heartily concur 🙂

Andrew now has me correctly determining TDC so we can get the ignition timing correct, as opposed to good enough to start it. 

and fixing my badly placed tippex marks.

The screwdriver is of course Heath Robinson in action in the absence of a B&Q open and nearby. The principal problem being solved here is the absence (or my inability to find) timing marks to match those on the crank pulley. And even if I could find them, visual alignment access seems impossible unless the engine is out.

Yeah, your marks are horrendous!

You view out of the garage however, priceless.

Speaking of marks these are my new ones, and in the process I discovered the right hand sprocket has two and the lower one matches. 

3 hours ago, Nigel Blandin said:

You view out of the garage however, priceless.

here's one without the car a few seconds ago 🙂

in fact Andrew knows this view very well having spent time in my garage replacing the engine loom on my K and indeed we were within a hair's breadth of resorting to the ultimate 7 tool, which is Easyjet tickets 🙂

Very, very nice! 
I have saved the picture of the cam pulley and will ask Paul Sherwood why there are two- maybe it is an option to change the exhaust timing for some reason?

Just found this picture from a manual on the BDP midget racing motor, it says the crank timing marks are on the back of the pulley!

Sorry talking complete rubbish in my below, you mean the Jackshaft pulley (I wondered what that was for). IN fact I am sure I have seen (what looks like) a timing mark on the front of that pulley and it is located just where your pic shows it is. It feels very odd not being centrally located, but I suppose why not? 

My engine is still all lined up from yesterday's aligning so that conjunction should be easy to see and even possible I think with the timing light. 

If I may say WELL SPOTTED! This absence of a crank timing mark, despite marks on the crank pulley has been quite a problem throughout, hence the dial gauge to find TDC - though I suppose there is no harm in using that to check everything given nearly 40 years have gone by. Might help identify why we have those two marks on the exhaust cam sprocket.

Anthony

yes Haynes says the same, but I cannot see any there

nor on the casing behind the sprockets

I have looked several times 

a reason to change the timing might be having the carbs jetted for max acceleration only and not for about town; more to burn meaning more time to burn meaning a bit more advance (not checked which way the "new" mark goes) edit: think I'll ask generally about this

ok, so, I am instructed to take it for a test drive and to check for pinking. I've not heard pinking since the 70s or 80s so .. can scarcely believe it, and thanks Andrew R for constant support and  Nigel Andrew E and Paul W at some point for always coming up with info. 

Fingers's crossed!! (it will be a while I have to clear all the tools and put the car back together)

Wonderful drive; better in every way.

Now to fit the new cam belt before I am tempted to do anything with it.

The perceived risk is that hidden damage has occurred by the jumping of two teeth in some way not identified, I suppose weakening is the most likely.

So the alternator belt has to come off, but I know not how one presents the new belt in to the confined space.

Cam belt change - new thread seems appro po:

linky here in a minute

These pics are simply to celebrate getting her going again after five weeks struggling to figure out what I broke (which turned out to be literally) and she is going great, better than ever, as you can see in the pics, we have the quality controller aboard: