----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
Paul::
The information forwarded to you by William R.
Bayne is priceless, and it kindled a little idea in my old corrupted grey
matter.
There is a rubber seal that is just behind the
cylinders that goes transversely across the top of the engine to seal between
the engine and the top cowl. Inadvertently this seal sometimes is
reinstalled improperly with the top of the seal pointed toward the rear of the
aircraft. At speed this allows high pressure air to bypass the engine and
exit into the accessory compartment rather than down through the cylinders,
which would lead to improper cooling. Inspect this area and make sure this
baffle top is pointing forward and seals properly. Normally it is stapled
to a forward position.
Wayne Woollard
----- Original Message -----From: Paul MaysSent: Monday, July 12, 2004 5:27 AMSubject: [COUPERS-TECH] engine temps----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----Hi everyone,I recently purchases ercoupe 94170 a C model with a C85, and I want to thank all of you for your help with advice on how to find one. I am mostly happy with this aircraft but have one concern. Having come from a glider and ultralight (2cycle) backgound, I'm somewhat obsessed with engine operations and in particular engine temperatures.My problem is that this engine registers (I think) high in all categories with 400-450CHT, 1500EGT, and oil temps typically 125 degrees above ambient at cruise. According to what I've heard and read in the manuals these values are all on the high side. Is this right?I realize that with these thermocouple based instruments there maybe a 50 degree instrument error, but given that they all seem high, it seems to me that it is running to lean, even tough I've been reassured by my mechanic that the carb is wired full rich.I'm not sure what I should do, if anything. Am I worried about nothing?The engine has about 120 hours on a major overhaul and I'd like to keep it fresh as long as possible.Any Infromation of advice will be greatly appreciatedThanks in advance.Paul MaysChattanooga============================================================================== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/
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