Europa-List Digest Archive
Tue 01/24/17 |
Total Messages Posted: 1 |
Today's Message Index: ---------------------- 1. 08:14 PM - Rotax 914 Exhaust Leak (djaflyact)
Message 1
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Time: 08:14:18 PM PST US
Subject: Rotax 914 Exhaust Leak I have a motor glider with the 914 engine. Just bought a good CO detector and was surprised that I have been flying for years with low level CO in the cockpit. I did the classic shop vac blowing in the exhaust to see if I could determine any leaks. To my huge surprise, I didn't need soapy water to find a leak. All four slip joints are blowing air like crazy. The fit seems very loose. I did the same test on a friend's newer 914 and there was no leak at all. Anyone have any experience with this. I loaded up the joint with anti seize compound as a test and the leak was reduced significantly. The cockpit readings at idle lowered from 20 to 5 on the ground. I am considering using a pipe expanding tool to slightly increase the smaller pipe to make it a tight fit. The metal is stainless steel and I don't know if that can be done. It won't take much to provide the increased tightness. A big concern is the cost off the exhaust parts if I need to replace them. Rotax is extremely proud of their parts. the 4 pipes and the gatherer total approximately $4700. That is crazy. Any isights would be appreciated. Dave A Read this topic online here: http://forums.matronics.com/viewtopic.php?p=465414#465414 Attachments: http://forums.matronics.com//files/screen_shot_2016_12_29_at_74111_pm_173.png
From: "djaflyact" <djaflyact@gmail.com>
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