This is becoming painfull and full of genearalisations and quotes from fairly generic accounts.
For those that haven't followed this discussion in the various threads understand these words below come from someone who currently flies a Hurricane I equipped with the early style carburettor affected by the cut out out issue and was asked specifically for his opinion. We have a similar though more abbreviated comment from another pilot current on similarly equipped aircraft. So read the following closely:
""First, I can tell you that it does not require negative g to make the engine suffer from a shortage of fuel supply; a significant reduction of g down to, say, 0.3g can be enough to make the engine misfire. This can be experienced towards the top of a wing-over but I would estimate that the reduction in g needs to be maintained for 2 seconds or more before there are any effects. Undoubtedly, if the reduction in g was greater (to less than zero g) and particularly if the bunt was abrupt then the effect could be instantaneous. I have never, though, experienced any misfiring in turbulence; albeit, were the turbulence severe enough to produce g spikes to less than zero g, I would not rule out the possibility of the odd cough from the engine. Of interest to you I am sure is that on recovery from an episode of fuel starvation the engine recovers through a short period of over-richness shown by, I would estimate, up to a second of black, sooty exhaust before normal combustion is resumed."
Quote from a current Hurricane I pilot !
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