Boiling Petrol?

[Robert Leigh]

Hi Dave,

Yes; as Robert says, I forgot to mention minimising the hot spot. Hacksaw through between the inlet and exhaust in the middle and slot down above the manifold studs either side of the inlet. Make sure the heat shield bends under the float chamber to deflect warm rising air.

Keep your cool, Dave

This is what I finally did to prevent boiling of petrol. Need a long run in hot weather now!

You have done a very tidy job of your shielding, but I have one small 'nit-pick': the fuel pipe loop should be horizontally set so that you have a steady rise from the pump to the carburettor, allowing any bubbles of air or vaporised fuel to rise easily to the float chamber. I know it is not likely to be a problem on the pump outlet, but in extremis it would be an improvement.
Robert