Getting ready to make the oil cooler lines for a UL Power 350iS.  The Zenith build guides show the oil cooler installed with the lines coming in from the bottom (although it also shows a different oil cooler than the one I received).  The UL Power installation manual shows them coming in from above.

Any advice on this one?

Views: 27

▶ Reply to This

Replies to This Discussion

I don't know anything about this system, so take this for what's it's worth, but it seems to me like it would be much easier to purge air out of the oil cooler if the lines were coming in/out from above. 

The oil hoses only fit the larger oil cooler from the bottom. Decision made. Don’t over think the simple things in life. Does it work with the hoses feeding the bottom of the oil cooler? Based on the fact that I have over a thousand hours on my 350i, the answer appears to be yes. Do I purge the air out, no.

Do run a brace bar from the bottom of the oil cooler to oil pan bolts. I do not use rubber grommets on the cooler mount. Mine is attached firmly in place. The original oil cooler with rubber mounts went in the trash after I noticed cracks in the cooler.

Ralph

1254 Hours on my UL and still flying!

RSS

New from Zenith:

Zenith Planes & Parts For Sale 
 

Classified listings for buying or selling Zenith builds and parts...


Custom Instrument Panels
for your Zenith
:

Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, Dynon and Garmin avionics, and more.


Zenith Homecoming Tee:


Zenair Floats


Flying On Your Own Wings:
A Complete Guide to Understanding Light Airplane Design, by Chris Heintz


Builder & Pilot Supplies:

Aircraft Insurance:

 
 

Transition training:

Flying Knuckleheads

Lavion Aero

Aircraft Spruce & Specialty for all your building and pilot supplies!

How to videos from HomebuiltHELP.com

Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit HomebuiltHelp.com for the latest DVD titles.

© 2026   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service