Hi Barry:
Attached is a photo of a
mod I made to the oil cooler
box to allow air to flow around cylinder head 2 on my IO-550.
The original
configuration of the oil cooler box and
the layout of the fins on the head block air flow from passing over the
lower
fins of the cylinder. The hole in the oil cooler box wall permits air
to
flow past this blockage location and over the lower fins.
The mod I made to the oil
cooler box consists of a
simple fibreglass bypass duct that allows the air to flow around the
blockage
point on the head, and then re-enter the fins on the lower part of the
head. This is not yet flight tested, but the benefit is that it
separates
the air flow through the oil cooler from the air flow passing over the
lower
part of the cylinder head.
Fred
PS Please forward to LML
as my emails get rejected.
Jeffrey
Liegner, MD
wrote:
I was
recently given
guidance to lower Cyl 2 temps to make the CHT grouping tighter and
improve
overall power options, particularly in climb. The suggestion and
demonstrated method was to cut a hole in the front wall of the oil
cooler
airbox
....
I
should have taken a
picture before I zipped up the cowl...sorry. If there's an interest,
I'll
send it as an addendum.
Nice
drawing and
description. I'm pretty sure I get it.
As one who has an unmounted engine, I might be interested in the
original
diverter design. But pictures of either or both would be worth a
thousand
more words...if they can be had. I'm particularly interested in the
hole
in the front of the oil cooler airbox...shape? size? location?
If you can share a photograph(s), I'd really appreciate it.
Barry Knotts, Conti TSIO-550, LIV-P, Perrysburg, Ohio