lml@lancaironline.net Mailing List Archive

Too late on the tear apart.

I already made the plenum for the larger cooler and hoses. I removed the old one and I am getting ready to re-install the new cooler. Should be done on Monday.

I didn't like the cooler up front anyway. It was rubbing on my cowling and damaged it. I wish I would have done this from the start. I wouldn't have a big chunk of paint missing from my cowling. And because of the space I had to use a 7 vane instead of the 9 vane.

If this doesn't help then I will consider having the carb looked at.

As far as pressure measurements I don't know how I would get this done without drilling holes in my firewall and I'd prefer not to do that as I have it all sealed up pretty good. How did you do it on yours? how many holes do you need if I do need to do this?

Bryan

On Fri, Jul 23, 2010 at 10:39 AM, Chris Zavatson <chris_zavatson@yahoo.com> wrote:

Bryan,

I would suggest taking pressure measurements before tearing the installation apart. The data will help determine the problem source, heat generation vs. heat dissipation.

CHTs are primarily driven by EGTs (mixture) and cooling air flow. The differential pressure test will verify air flow. Since CHTs in cruise are good and reported fuel flow in the climb sounds low I would suspect the carb itself.

I wouldn't expect any global CHT change by moving the oil cooler, since the source of air and the volume extracted will be roughly the same.

I do like switching to a larger cooler. If I recall, you had some kind of space constraint that made it difficult to put the larger cooler in the same location up front.

Chris

Chris Zavatson

N91CZ

360std

www.N91CZ.com

From: Bryan Wullner <vonjet@gmail.com>
To: lml@lancaironline.net
Sent: Wed, July 21, 2010 2:08:42 PM

Subject: [LML] Re: My airplane is running HOT

I'm starting with the changing of oil cooler to a larger one and relocation to engine bay with scat ducting to it off the baffling.
If that doesn't do it I will move on to the next idea.
My hopes are that my oil comes down and helps the cht's too. I also hope that closing off the large hole in the front baffling from old oil cooler placment helps with cht's

Bryan