MG TD – 1952
Per the numbers
Based on the production numbers for TD # 14845, it come off the assembly line on April 2, 1952. For some reason the number chosen by the State of Ohio for the VIN was the Engine # 15096. The Colorado Inspector said if you can show me that number somewhere, I won’t try and change it. So, that’s the VIN. The designation as a TD2 indicates its evolution rather than a specific model change. The last two improvements appear to be a dual oil pressure/water temperature gauge and replaceable oil filter cartage. They started designating production as TD3 in June 1952; the last TD produced was in August 1953. The Body #14206 has no significance other than it’s the only number stamped in the frame. However, to see it requires removing the driver’s seat and floorboard. So, we haven’t seen it.
What’s the nuts and bolts with Robert Whitworth and the MG
As described in a fine article from the December 1976 issue of the “Sacred Octagon,” Robert Whitworth had the correct idea and proposed the first standardized thread form in 1841; and it was adopted as the Standard of British Industry. It had thread sizes in inches, and the nuts and bolts head sizes although standardized bore little relationship to formal measurements. As an example the 1/4″ bolt required a wrench 0.445″ or 11.3 mm. The engines since 1923 for the MG “T” cars were built in a plant that had been used to make munitions using the French metric system. As an example, the French system for an 8mm bolt had a pitch of 1.00mm; a modern 8mm bolt has a pitch of 1.25mm. However, the man in charge, Lord Nuffield, wanted the workers to be able to use their Whitworth wrenches; so they created what the article calls “Lord Nuffield’s Mad Metric Form.” It includes old French metric threads with Whitworth heads. The best advice when working on the engine or transmission of a “T” car is to be careful to keep track of each bolt and where it came from because over time some have been re-threaded to modern metric and in some cases to Unified or American National threads. Although you will find Whitworth wrenches useful for some other older motorcycle, airplane, and RR engines, the Mad Metric system is limited to the MG.
Its a safety thing
The installation of seat belts not just for adults, but because the child restraint laws required it for grandchildren under 18. Not wanting to drill holes in the tube frame but wanting the security of being attached to the frame, we used chains around the frame.
Because today’s drivers don’t look down for signals, we changed to the original MG style of luggage rack to provide a place for additional brake and turn signals.
Ben and Grandpa perform some routine maintenance