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the-chauffeur:

Sorry to hijack, but Bryan mentioned stove enamelling the outer barrel case and I was wondering . . .

 . . . Bryan - what's your experience of how well stoving holds up as an engine finish?  I've had a hell of a time with getting conventional VHT paint to adhere to my 750 engine cases - the head and barrels are fine, 'cos it cures fairly well with the heat they generate, but the crankcases don't get anywhere near hot enough (and a fuel leak from one of the carbs has lifted layers right off).

The engine is gonna come out in the autumn/winter so that I can replace the cylinder rods (I think they've stretched) and so I'll have the opportunity to get the engine re-finished properly.  Question is, do I get the cases/head/barrels stoved, or give them to a specialist who'll etch prime, then spray VHT?

Thanks in advance for any advice . . .

Neil 

Bryanj:
Never done VHT so cant answer definitively but have heard that the finish needs "Baking" to be durable

The one i did was back in 77(ish) and the block was bored to take big liners and when rebuilt leaked oil from somewhere in the fins so we pulled it, had the cylinders blasted and stove enamelled black, Powder may have worked but wasnt about then.

All it did was put a continuous hard coat of paint over the porous alloy and that was enough to keep oil in as it wasnt a pressure leak

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