Over the years I have seen a number of photos of British and European
Austin-Healey race car engines that use a hose from the water heater valve at
the rear of the cylinder head that is connected to the radiator hose. I assume
that there must have been an over-heating problem in cylinders #5 and #6 to
warrant this hose connection.
I have been racing for a few years now and have never encountered this kind of
problem. But, I am bumping my compression ratio up in a new engine for this
summer's racing and I would appreciate any information on this matter.
Up till now I have been running an 11:1 compression ratio.
Richard Mayor
BN7L-466 Vintage Racer
Portland, Oregon
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