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TR2/3/3A How to verify TR3 engine numbers

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Martin Longmore said:
My TR4a 1967 was originally a CT engine no. I rebuilt a TR3 engine TS engine no. and put that in the car. Very little difference between the two engine blocks. The TS blocks have no camshaft bearings and the engine breather was discontinued in favour of a EGR valve, 'engine gas recirculation' valve. The CT engine blocks all had replaceable camshaft bearings. The reason I swapped the blocks was that I needed the car for work and needed to be able to change engines over the weekend. I worked for Triumph so obtaining all new parts for the engine was not a problem.
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Humm and I have been replacing those cam bearings in the TR3 motors and they weren't there you say?
Charley
 
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