mfg Posted September 20, 2017 Report Share Posted September 20, 2017 To aid in oil 'drain back' from the rocker arm area of the cylinder head, Studebaker engineers increased the diameter of the cylinder head oil drain holes by......?......%. 1) 10.........2) 25..........3) 35....or....4) 40 Link to comment Share on other sites More sharing options...
mfg Posted September 21, 2017 Author Report Share Posted September 21, 2017 Anyone? Link to comment Share on other sites More sharing options...
mfg Posted September 22, 2017 Author Report Share Posted September 22, 2017 All through here? Link to comment Share on other sites More sharing options...
r1lark Posted September 23, 2017 Report Share Posted September 23, 2017 #3, 35% should be about right if I ciphered right. Link to comment Share on other sites More sharing options...
mfg Posted September 23, 2017 Author Report Share Posted September 23, 2017 12 hours ago, r1lark said: #3, 35% should be about right if I ciphered right. 35% increase is CORRECT! Link to comment Share on other sites More sharing options...
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