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rotorwrench · 08-10-2014, 08:58 AM

The original purpose was for an oil cooler installation. The blocks manufactured during and after the war had the boss but not all are drilled and tapped. It depended on the application as to whether it was opened up or not. As was mentioned, the two ports have to be issolated to use for a filter so you have to check for the plug in the horizontal passage between the two.

Bren gun carriers used the early style Canadian block and they had an oil cooler system. These were produced through out the war and many were surplused out after the war.

08-10-2014, 08:58 AM	#78
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,436	Re: Engine block I.D. pictures The original purpose was for an oil cooler installation. The blocks manufactured during and after the war had the boss but not all are drilled and tapped. It depended on the application as to whether it was opened up or not. As was mentioned, the two ports have to be issolated to use for a filter so you have to check for the plug in the horizontal passage between the two. Bren gun carriers used the early style Canadian block and they had an oil cooler system. These were produced through out the war and many were surplused out after the war.