by moore1 | Oct 31, 2017 | Engine Builds, News, Racing Matters, Top Stories |
By Alfie Bilk: Jon Kaase has won this year’s Amsoil Engine Masters Challenge Vintage class with a 473ci 1958 MEL (Mercury-Edsel-Lincoln) engine. Exploring the classic turf in distinctive fashion, it was not the first time Kaase had arrived with an unorthodox relic endowed with bewildering technology. Held annually in early October at the University of Northwestern Ohio, his entry produced 770hp with torque never less than 630lb-ft during the entire scored rpm range of 3,700-6,200rpm. The engine’s peak torque was recorded at 715lb-ft. Earning a check in the sum of $13,700, it was Kaase’s seventh victory at the prestigious affair, which coincided a few days before his sixty-fifth birthday. This year’s Vintage rules specified factory cast iron cylinder heads and prohibited welding or the application of epoxy to the ports. Also, it was stipulated that the engine block must retain its original bore spacing and original block deck angle. A further constraint for Kaase was the fact that he had to return the MEL block to its owner, Royce Brechler, in a functioning condition. The origins that preceded the workings of a bright mind MEL engines had wedge-shaped combustion chambers formed between a flat cylinder head surface and an angle-milled block deck angle that was ten degrees off square with the bore axis. The piston crown determined the compression ratio and combustion chamber shape—a concept similar to Chevrolet’s 409, a design also introduced originally in 1958. Yet to each cylinder head deck, Kaase added four slugs of round bronze bar stock by counter-boring the heads to accept them. Measuring 4.600in diameter and 1.250in tall and protruding downwards, each set...
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