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Ed, the fresh air opening in the nose bowl is only about 1 1/4" in diameter.  I think that he's asking about either the oil tank cooler hole or the carburetor air inlet hole.

Syd



Ed Burkhead wrote:
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John,

 

That’s the opening for the cabin air.  You should have, or get, tubing from that opening to the flapper for the cabin air.

 

I got great airflow from that opening.

 

Ed Burkhead

http://edburkhead.com

ed -at- edburkhead???.com          (change -at- to @ and remove "???")

 


From: John Pickett [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, October 18, 2005 8:04 PM
To: [email protected]
Subject: [COUPERS-TECH] One more question

 

 
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Hello all,, Response was great.. I will go to Terrell soon,, and see Mr. Hardin,, It is a relief that a coupe mechanic is so close by.. The trip was fun,, a little tiring, but a fun adventure,, Other concern,, was oil temp,, I landed one time and let oil cool down,, I have since found  that temp may have been o.k. for my setup,, One question,, There is a small hole in the front right of nose bowl,, about 2-3 inches in diameter,, It appears to be just about in line with oil tank,, It had a screen over it,, Looked like screen that is used on a house window,, anyway,, it had been completely covered with paint.. No air flow.. On my second day of flight,, I removed screen,, to let air flow,, It seemed to lower oil temp.. Was removing screen a good or bad thing to do??  Is hole suppose to help cool oil tank?  Thanks, John #93735 
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