MG
The Classic Marque

Just to give more of a background to this problem:-
In June a few of us went to France in our Sprites. Probably did over 1k miles and my car was absolutely fine. Day before leaving for home I checked the coolant and had to put about 1.5 pints in. Drove to the ferry and all fine. Parked up then started the car but it started to splutter. Checked the plugs and they were black so changed them.

The bearing is a standard deep groove ball bearing 6207 IIRC. Pick your maker and price point, they can be had from top quality makers like SKF and others or cheap ones. As it's such a common size even quality ones aren't expensive but then some suppliers will just buy the cheapest for a bit more profit.

Les - I have an alloy cover too, but mine's an Ashley GT one. I'd rather have a proper one actually, though I think the alloy ones are quieter.

See Ann Widdecombe has died.
It appears foul play may be involved as Devon & Cornwall Police are looking for a white male suspect.
Maybe he has something of the night about him?
Mind you he is 84 now so unlikely.

Last question: which supplier do you use?

MGOC offers bearing, oil seal, lockwasher, o-ring and gasket as a bundle, for less than the cost of the AH Spares bearing alone.

Probably the same manufacturer somewhere in the east, or might one set be better quality?

Or, who else do you go to?

Yes have a heat shield, stainless steel one.
Up until a few years ago also had exhaust wrap on the manifold - I have a Maniflow LCB. Took it off as can cause the manifold to rust. I wonder if its worth putting some back on ? But then again why would it just be me having this problem.

Do you have a heat shield, quite hot out there at the moment, which could result in fuel evaporation in the carbs.
Going to be worse on the motorway.

Might try a new rotor arm. What are the tell tale signs of it being dodgy?

Les, the colour of a rotor arm alone is no guarantee of quality....best to source from reputable oulet...thinking Distributor Doctor here who supplied me with advance springs as well as other internals. Dave

I had loads of issues with leaking rocker gaskets, so decided to blue hylomar the gasket on the bottom and left it dry on the top, then tightened the alloy rocker box down hard, now the gasket is stuck to the head and retains the oil, even if the rocker box comes off - so far has been my most successful and reusable rocker gasket