Hi everyone,
New to the forum, a lot of info on here!! I have a 430 that I have stripped down and was wondering if anyone has replaced the oil lines / tubes that run behind the frost plugs? Mine are rotted off. Thanks. B

If it is the lines that go to the vacuum pump mounted to the oil pump, then it is a vacuum line. I am not going to use the fittings off my 60. If your in the US you can have mine.

If you are talking about what I think you are, those are not oil lines behind the core plugs they are support rods that help hold the casting mold together, They really have no function at this point. Most engines have them