Full pressure oiling.

[Chuck Sea/Tac]

I’ve got an engine it’s all set up for full pressure oiling, except, for the plumbing in the valve chamber. I’ve got the info from sos which say you should do the bearing feeds before babbitting. This wasn’t done. Any thoughts on how to connect to the bearing feeds in the galley? Tia

 

[Jim Brierley]

Chuck, it makes a difference if it is an A or B engine. e-mail me at jimb4e4@gmail.com and I'll send you a chapter from my book.

 

[Richard in Anaheim CA]

Chuck,

You can't get better advice than from Jim Brierely, and a free chapter from his excellent book too

Richard
Anaheim Ca

 

[Chuck Sea/Tac]

Jim I have your book. It’s an A engine. I only see pictures,re feeding the bearings, which I don’t understand. So the question remains, how to connect feed lines to the bearing feed lines? Possibly drill and tap? I see the upper tube ends are about a quarter inch below the casting.

 

[johnneilson]

Chuck,

I have seen where the copper tube is epoxied into the feed tube in the valve chamber.

I guess it works, haven't heard any failures.

What I have done is to take out the feed tubes and tap the casting where the tube goes into the bearing 1/8 NPT. Then I take just the adaptor section of a compression fitting and screw it into the tapped hole. Then feed copper tube down the feed tube hole from the valve chamber and guide it into the fitting. Once in, heat the fitting and solder the tube in place.

John

 

[Jim Brierley]

I've seen pressurized A engines run for years using only 1/4" tubing throughout the entire system, so I would run 1/4" copper down into the tubes (in the valve chamber) a ways, 1" or so, and epoxy them in place. Use larger tubing if it will fit (?) or use "my method" as outlined in the book. johneilson's method will work nicely too but may be a little more work?

 

[Phil Brown]

A lot of work and you run out of room real quick to use larger tubing