Hi Bryan,
I have seen your airplane and I do not think you have an exit
problem. You have plenum from Chris Z, so you are great there. Can
you verify for sure that your probes are all calibrated and reading the proper
temp? And on the subject of fuel flow, my little 320 needs 12.5 gph or better
in the climb and sometimes it will still get hot when its this hot out. You should
be 18 gph on take off and at least 14 on climb. Keep your climb speed at 150kts
or better on these hot days too. What brand oil cooler are you
using? I switched mine to a dual pass Stewart Warner and it made a big
difference. Can you send me a picture of the bottom baffling around
the cylinders? Something could be off there.
Craig Schulze
From: Bill Bradburry
[mailto:bbradburry@bellsouth.net]
Sent: Saturday, July 17, 2010 4:44 PM
To: lml@lancaironline.net
Subject: RE: [LML] Re: My airplane is running HOT
Check the air pressure in flight above the cylinders and compare it
to the air pressure below the cylinders. You may find that you need to
add a cowl flap. At least you can see how the air is moving thru the cowl
in flight. That will go a long way to solving the problem.
Bill B
From: Lancair Mailing
List [mailto:lml@lancaironline.net] On Behalf Of Bryan Wullner
Sent: Saturday, July 17, 2010 2:41 PM
To: lml@lancaironline.net
Subject: [LML] Re: My airplane is running HOT
Exit area is standard 360 cowling exit. Can see why it would
behave any different than any other lancair out there. Its actually a pretty
good size opening.
On Fri, Jul 16, 2010 at 8:21 PM, <marv@lancair.net> wrote:
Posted for Bryan Wullner <vonjet@gmail.com>:
Anybody have any ideas or advice for the following situation:
Lancair 360 with carbed 360 (180hp) engine. 475 hours on it about. Chrome
Cylinders. I have a Plenum cooling system and larger cowling inlets.
(Zavatson's cowling and plenum system)
Oil cooler is mounted at the front inlet.
Oil wont cool in climb and will go up to 230 and probably higher if not
stabilized. CHT's are all hot in climbs and will go to 440 no problem.
Cant
figure it out.
Motor runs great, compression good, boroscoped fine, mag timing good. All
leaks in plenum or baffling are sealed.
Probes were checked out ok.
Only thing I haven't checked is the vernotherm.
Thanks for any advice.
Bryan
[How big are your cooling air outlets and where are they located? Sounds
like you're getting the cooling air in but not letting it out. Just a
thought. <Marv> ]
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