Today's Message Index:
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1. 04:38 AM - Re: O-320 Cylinder Heads Different Temperatures (Michael Kraus)
2. 05:48 AM - Re: O-320 Cylinder Heads Different Temperatures (FLYaDIVE)
Message 1
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| Subject: | Re: O-320 Cylinder Heads Different Temperatures |
Can you better explain the temperatures and temperature differentials by cylinder?
-Mike Kraus
RV-4 sold :-(
RV-10 flying :-)
KitFox SS7 Radial building :-)
On May 11, 2013, at 2:37 AM, George Nielsen <genie@swissmail.org> wrote:
>
> According to the Vision Microsystems VMS 1000C display in my aircraft the temperatures
of the cylinder heads differ when in flight. Could that cause problems?
If so, what, and how can I remedy this?
>
> Thanks.
>
> George Nielsen
> RV-6 PH-XGN
> The Hague, the Netherlands
>
>
>
>
Message 2
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| Subject: | Re: O-320 Cylinder Heads Different Temperatures |
George:
A temperature differential (delta) between both CHT & EGT that is poorly
considered acceptable at 50 Deg F between cylinders.
I think that is VERY POOR. I am seeing ONLY 15 Deg F delta on CHT. And in
real cold days (32 F/0C) the delta drops down to about 5 Deg F on CHT's. I
am not concerned with the delta on EGT's but I am on CHT's. I monitor
CHT's during flight. As far as EGT's go... I can lean just as well with
the EAR as with the EGT.
So, how do you control the delta? A REAL tight fitting baffling system or
plenum. I am luck as I have baffles. By controlling the fit around the
starter ring gear, size of cowl exhaust ramps/flaps, fit of top to bottom
of cowl, oil cooler location, and those highly forgotten little pieces of
aluminum in front of cylinders 1 & 2. You can get the temps down. AND
don't forget to install those fiberglass blisters INSIDE the cowl... You
know, the two just after the intake ports - Mounted on the top of the cowl.
DON'T ASK!
I have also found the two louver vents on the bottom of the cowl work
GREAT!
Cooler engine and NO CO issues.
*Barry*
On Sat, May 11, 2013 at 2:37 AM, George Nielsen <genie@swissmail.org> wrote:
> genie@swissmail.org>
>
> According to the Vision Microsystems VMS 1000C display in my aircraft the
> temperatures of the cylinder heads differ when in flight. Could that cause
> problems? If so, what, and how can I remedy this?
>
> Thanks.
>
> George Nielsen
> RV-6 PH-XGN
> The Hague, the Netherlands
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