Re: 38 V12 waterpump

Posted by Owen_Dyneto On 2016/8/23 15:30:30

Yes, the Twelve pump is a separate assembly. Not too different in concept from the Eight/Super Eight pump used on the 320/385 engines, though much longer in length. I'll look for a picture.

As to the use of studs, the pump used from introduction thru 1939 on the 320/385 engine uses a locking ring secured by nuts on studs to secure the pump body to the block and yet allow rotation for belt adjustment (on models with timing chain_driven generators). The pump body is an eccentric so rotating the pump body within the block changes the effective distance from the crankshaft and is thus the means of adjusting the fan belt(s). The pump to block seal is a very large copper ring gasket.