Posted by Matt 49 TEA Australia on November 10, 2012 at 02:12:43 from (188.8.131.52):
Hello all I am helping a friend rebuild a 1953 tea20 standard engine, 85mm bore, 12V. When we pulled it apart we discovered some items I have never seen before and I would like to know if anybody may know why
The first item was the rear main seal, instead of the rubber split seal that feeds into the groove of the block and main bearing cap it has a worm machined in the crank and 2 cast aluminium plates that exist in place of the rubber seal, it relies totally on rotation of the crankshaft and the worm rotation to prevent oil escaping. The 2 half plates also have spiral grooves cut in them
The second item is the timing chain, it has a tensioner made of stainless steel that keeps the loose side of the chain from flapping, it pivots on a pin that goes through to the engine block at one end and the other rests against the timing case
I have worked on lots of these engines and never seen it before, does anybody have the answer, maybee parts from a vangard car or a baler engine etc, thanks Matt.
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