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Jab 3300 CHT Update

 
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JAPhillipsGA(at)aol.com
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PostPosted: Sun Sep 10, 2006 4:43 pm    Post subject: Jab 3300 CHT Update Reply with quote
Dear Thread Friends, After so many fellows have helped my battle with the CHT monster and having been so disappointed in progress so many times I felt I needed to report that the dragon is dead and the CHTs have gone down and are stable. I flew her very hard today in 90 + heat and No. 4 stabilized at about 270 degrees. That is down from 340 degrees only a couple weeks ago. I owe a bunch to Ron, Fred, Jim, Harold, Derrick, Gene, Neil and a couple other guys that came by, drank my beer and offered opinions, and anybody else that ever told them anything about air ducting and cooling airplane engines. You guys will never have to buy a beer if I'm anywhere around !
Best regards, Bill of Georgia
N505WP
601XL-3300 [quote][b]

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rdewees(at)mindspring.com
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PostPosted: Sun Sep 10, 2006 5:58 pm    Post subject: Jab 3300 CHT Update Reply with quote
I need directions to your hangar and a taxi to the bar!!!
Congratulations again!
Ron

JAPhillipsGA(at)aol.com wrote:

Quote:
Dear Thread Friends, After so many fellows have helped my battle with
the CHT monster and having been so disappointed in progress so many
times I felt I needed to report that the dragon is dead and the CHTs
have gone down and are stable. I flew her very hard today in 90 + heat
and No. 4 stabilized at about 270 degrees. That is down from 340
degrees only a couple weeks ago. I owe a bunch to Ron, Fred, Jim,
Harold, Derrick, Gene, Neil and a couple other guys that came by,
drank my beer and offered opinions, and anybody else that ever told
them anything about air ducting and cooling airplane engines. You guys
will never have to buy a beer if I'm anywhere around !
Best regards, Bill of Georgia
N505WP
601XL-3300

*
*



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lgingell



Joined: 10 Jan 2006
Posts: 50
Location: Lake California Airpark 68CA
PostPosted: Mon Sep 11, 2006 8:08 am    Post subject: Re: Jab 3300 CHT Update Reply with quote
So....what changes/baffels etc. did you end up with? How was your oil temp doing?

..lance

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Zodiac XL/Jab 3300
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JAPhillipsGA(at)aol.com
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PostPosted: Mon Sep 11, 2006 9:38 am    Post subject: Jab 3300 CHT Update Reply with quote
Lance, I used some of Jeff Small's fins and Ron DeWeess' fins and well as Fred H's fins, plus, enclosing the area beside the duct and diverting that air around No. 6. Adding between barrel diverters, at the bottom, closed up the front of the duct bottom, added metal air ducts between valve covers with internal V type diverters, plus attaching a metal plate below the spark plugs that is bolted down with valve cover bolts. Really Lance there is so many things I can't really write and describe them. You are welcome to come by my hanger and I'll show them to you and you can measure, photo, etc.. A problem is that one or more of these mods may actually have nil effect or may even work against some other mod. So perhaps some combination? would have the same effect without some of the mods. I just don't know. Best regards, Bill [quote][b]

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