I am working on my cowl on my 750. I have the oil cooler baffled tight and the opening cut out at the top of the hole for it. I am going to put a 2 inch extension on the bottom lip. I have the generation 3 engine. Do I need to make an opening in the front to let air flow onto the front of the oil pan?

Views: 268

Reply to This

Replies to This Discussion

Rather than make an additional opening (which can upset the pressure differential between the ram air ducts and the lower cowl), I made a ramp on the left cowl opening that ducts air to a ducted oil sump cooler, works great!

John

N750A

I’ve seen this on on here before. Looks great! So the original cooler isn’t enough to keep the oil cool? Do I understand correct that after the engine gets broke in that the oil temps will stabilize a little lower than at first?

The FWF kit came with a 7-row cooler and I upgraded it to a 10-row.  That seemed to control the oil temps OK.  However, some say that an aviation "air cooled engine" might derive as much as 25% of it's cooling from oil circulation.  So, the cooler the oil the better ... within limits.  Yes, both CHT's and oil temps will stabilize lower after break-in, but my cylinder head temps came down somewhat with the oil sump cooler - I run CHT's about 250F average in winter and 275F average in summer.  Oil temp about 198-200.  

John

Did you drill and tap the holes in the fins of the oil pan for the screws to mount the sump cooler?

No - the holes were already present.

John

Sounds good. I found pictures of this cooler from previous posts. I think I’ll do it too. Thanks. 

RSS

New from Zenith:

Zenith Planes For Sale 
 

Classified listing for buying or selling your Zenith building or flying related stuff...


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:

 
 

West Coast USA:

 
Pro Builder Assistance:

 

Transition training:

Lavion Aero

K&S Aviation Services

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.

© 2024   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service