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Bypass oil line routing ?
#1422878 Fri Sep 03 2021 10:34 PM
Joined: Mar 2006
Posts: 30
BCLEM Offline OP
'nother newby question. On my 235 motor, theoretically from a 57 belair donor, the return line from the filter canister bolted on the intake is routed around the motor and connected to a fitting in the side of the head on the passenger side. The feed line is coming from a T low on the drivers side. I've seen a few pictures of motors with the same connection but I've also seen return lines routed to a passage not far from the feed port. What gives ? Can I move my return line to the drivers side for a cleaner look ?

Re: Bypass oil line routing ?
BCLEM #1422886 Sat Sep 04 2021 01:55 AM
Joined: Jan 2001
Posts: 5,159
That spot on the head was an access point that Chevrolet used to drill a horizontal passage to supply oil to the rocker shafts. It was plugged with a 1/8” pipe plug originally.
If there has been some passage way that has become plugged in the block or before that horizontal path, it was common to run an external line to that spot.
You can try to relocate the return line and see if you still get oil to the rocker.

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