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BobbyPaulk(at)comcast.net
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 Posted: Thu Sep 02, 2010 12:43 pm Post subject: Cooling |
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List,
I have the Jabiru 3300 in my Zodiac 601 XL.
CHT's on the right bank 1, 3, & 5 are all around 265 ~ 275 degrees.
On the right bank #2 is 270 to 280 but #4 is running 335 plus and #6 is 345 and above. Has anyone had any luck adding a lip on the eyebrow inlet of the left bank?? The prop is coming up on that side and a lip may help direct more ram air into the duct. I have seen a couple of photos but no real evidence or documentation that it has helped. Any info would be greatly appreciated. I have been chasing temperatures for the last 60 hours.
Thanks
Bobby
Jacksonville, Fl.
[quote][b]
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don.honabach(at)pcperfect
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| Posted: Thu Sep 02, 2010 1:42 pm Post subject: Cooling |
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I installed an ‘eyelid’ on the pilot side air intake for my 3300A for the exact same reasons – high temps on the 2/4/6. I’m flying a 601HDS.
I just took a scrap piece of aluminum, riveting it to the top of the cowling to make an eyebrow/eyelid and then flew. Mine extends out about 1 ½” inches if memory serves me right.
You’ll find that you just have to play with how far it extends out until the CHT numbers are right. Little trims seemed to make a big difference – definitely don’t cut more than 3 to 5mm each time you test fly.
Mine is painted white to match the cowling and I was going to send you a picture, but it blends so well in all my pictures it is impossible to see – a good thing I suppose.
Don’t forget that you’ll most likely need an air dam L angle around #4 to tweak in the temps on #2 and #6.
Don
From: owner-jabiruengine-list-server(at)matronics.com [mailto:owner-jabiruengine-list-server(at)matronics.com] On Behalf Of BobbyPaulk(at)comcast.net
Sent: Thursday, September 02, 2010 1:43 PM
To: jabiruengine-list(at)matronics.com
Subject: JabiruEngine-List: Cooling
List,
I have the Jabiru 3300 in my Zodiac 601 XL.
CHT's on the right bank 1, 3, & 5 are all around 265 ~ 275 degrees.
On the right bank #2 is 270 to 280 but #4 is running 335 plus and #6 is 345 and above. Has anyone had any luck adding a lip on the eyebrow inlet of the left bank?? The prop is coming up on that side and a lip may help direct more ram air into the duct. I have seen a couple of photos but no real evidence or documentation that it has helped. Any info would be greatly appreciated. I have been chasing temperatures for the last 60 hours.
Thanks
Bobby
Jacksonville, Fl.
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