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MG MGA - Engine marking
|my 1500 engine is topless at the moment and I can see a "3" which has been stamped on the block within a diamond shaped frame. The bores are much too smooth for an un-bored 1957 engine - does the mark relate ?|
|I do believe it is the inspectors stamp from the manufacture process. If the engine was bored oversize the oversize amount would be stamped at each cylinder. ie .010, etc.|
|After boring at the factory, the bores were checked for tolerance and stamped with a number. The asssembler would then select the correct grade piston to suit the bore.|
|Dave O'Neill 2|
|Interesting - thanks folks|
This thread was discussed on 02/09/2015
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