|The tips and tricks:
- Clean everything with engine cleaner, hose off, and blow off with air.
- Watch that chrome lines do not flake and shed plating.
- Don't tighten the pipe-thread nipples in too far.
- Braided steel lines don't cool as well and might leak.
- Lift the tube up as you install it so it is the same depth in both nipples.
- If the tube is too short, the O-rings can block the oil.
- You can use 1/2" and 13mm wrenches.
- Have a bin or tray for all the parts.
- As always, return the tools to the toolbox as you work.
As simple as the oil lines look, there are many little subtle things you have to know about. (Click for video.)
The two thin steel oil lines carry engine oil to the heads. The oil lubricates and cools the heads, and drains back down along the pushrod tubes, and through drilled passages down the cylinder and onto the piston sides.
They are simple and work OK, but you have to make sure they fit properly and that they are centered along the length as you tighten the nuts on the top and bottom.
You should be careful not to tighten the pipe-thread nipples too far into the heads or engine case. Doing so moves them farther apart and means the oil line will be too short. When they get short enough, the rubber O-ring collapses around the end of the pipe and blocks oil flow.
Don't use Teflon tape if you install new ones, Teflon pipe dope very carefully applied won't get into the oil system.