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MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG MGB Technical - Cam Chain Tensioner Ring

The 948cc and 1098cc A Series engines had a tensioner ring on the drive sprocket, but its use was abandoned on the later engines. How did it worK? Was abandoning it just a cost-cutting measure, or was it a source of trouble, or what?
Stephen Strange

Opps! Wrong BBS!
Stephen Strange

FWIW it was useless. It was a dirt-cheap attempt at a timing chain tensioner to make for quiet running. Fair enough a new ring did take out the slack in the chain, but it very soon lost its tension and the chain became as noisy as before. So not a source of trouble exactly, more saving the cost of a part that did nothing worthwhile.
PaulH Solihull

This thread was discussed on 13/06/2011

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