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MG TC "Midget" roadster - chassis number TC/9477 - Rebuild
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XPAG engine was bored to +0.060", the crank ground, and crank and rods balanced. Flywheel was lightened, and head converted to "unleaded" with larger valves. The TD-style sump was later replaced by a TC sump, bought from MG collector Win Estes in Pebble Beach, and carried home as checked luggage. Front pulley was temporary; now replaced by a three-groove pulley to drive generator belt and two supercharger belts. I had built this engine to be run on carburettors, and so the compression ratio, with an "8.6:1" head was 8.95 with the 0.060" pistons. This gave a lively performance, but much detonation with the blower, and the head was changed on 2007-11-25 for a standard thickness head with big valves, giving 7.54;1 CR and eliminating the detonation. |
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The DKY4A distributor was rebuilt with an advance curve to suit a supercharged engine. XPAG/XPAW/XPEG engines series had a variety of oil pumps. I am using the type second from left, with 1/4 BSP outlet, so I can run hoses to a front-mounted oil cooler [Mocal 13-row]. I had the oil hoses made to my specification using 1/2" ID hose, with stainless steel braid, and swaged fittings. The oil cooler is hidden under the front apron panel and is not easily visible.
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New body tub from Ian Murley, built from Hutson timber kit. Doors skinned in steel; remainder skinned in alloy. Tub problems were later sorted out by Steve Gilbert. | |||