Yesterday I spent a bit more time attempting to finish the tappet covers. After clearing the threads in both the covers, clearing out the locating pin holes and straightening one of the locating pins on the inlet I finally got them to fit. The part numbers are identical for both inlet and outlet covers, but for some reason the one I had on the inlet fits the outlet and the one I had on the outlet fits the inlet. Go figure. There's obviously something around the locating pins, and I did notice that the original centre screw is longer than the one that I made; however, they are both on and done up and finished.
Next I moved on to the timing cover with Wellseal and grease either side of the gasket as this cover comes off fairly regularly.
The dynamo chain area is now liberally coated with semi-fluid grease and the cover is on. Some of the screw holes are obviously not clear for their full length and now that I have new Acme stainless steel screws I will need to run a tap through some of those holes again. I've ordered a tap from Tracy Tools - they do a very long (and expensive) tap called a 'nut tap' which will do the job nicely.
The 'nut tap' is a very long taper tap - I'll need to cut perhaps half the length off the taper, as I really need it as a plug tap.
Next step is to close up the gearbox. I'm on the railway for the rest of the day, so that will have to wait until tomorrow.
One job I haven't really finished is the head steadies. Unfortunately despite the fact that they are retained to the head with half nuts, there is still not enough room to get a nut on the timing side - the drive side has a fin missing. It's extremely fiddly in there, there is no space, and unfortunately I have realised that you have to have the rocker cover slightly high before you can get the nuts on. I'll lift the rocker cover again next time.
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