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rotax 447 longevity

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DAquaNut(at)aol.com
Guest

Posted: Mon Apr 23, 2007 9:20 pm Post subject: rotax 447 longevity

Guys, 

   Im trying to make a decision. Your input will help me make the right one. Has any one ran a 447 to 100 hours without a decarbon using pennzoil?  Has anyone had a 447 fail due to carbon under the rings before reaching 100 hours while using Pennzoil air cooled exclusively? PLEASE, No oil war!   If you have experience That falls in either of these categories, I would like to have your imput, otherwise please dont respond.  Thanks in advance. 

 

            Ed Diebel  (FF 62) 

**************************************

 See what's free at http://www.aol.com.  [quote][b]

JetPilot

Joined: 10 Jan 2006
Posts: 1246

Posted: Mon Apr 23, 2007 9:26 pm Post subject: Re: rotax 447 longevity

You wont get carbon buildup if you use Seafoam      I asked a similar question in the Rotax Forum and got some good information.  I did not ask about oil, but I did get a lot of responses on engine life.  You might want to look at this thread.  It got broken into 4 threads, but some good information if you read them all.



http://forums.matronics.com/viewtopic.php?t=23615



Mike

_________________
"NO FEAR" - If you have no fear you did not go as fast as you could have !!!

Kolb MK-III Xtra, 912-S

ElleryWeld(at)aol.com
Guest

Posted: Tue Apr 24, 2007 3:13 am Post subject: rotax 447 longevity

Ed  I recently removed a 447 engine that I ran to 401 hrs without any decarbon,  the engine was still running fine I just figured it was better to replace the engine but I didnt use Pennzoil 

 

 Ellery  with a new engine in Febuary

 

 do not archive

**************************************

 See what's free at http://www.aol.com.  [quote][b]

Ralph B

Joined: 14 Apr 2007
Posts: 367
Location: Mound Minnesota

Posted: Tue Apr 24, 2007 4:46 am Post subject: Re: rotax 447 longevity

I have over 450 hours on my 447. It's never been overhauled or decarboned. I don't plan on doing anything but inspect the rings and cylinders once a year as I always do. I do use Seafoam and Klotz synthetic oil. I believe in it, but that's just my opinion. I like a reliable engine, and I have had great reliability with this combo.



Ralph

_________________
Ralph B

Kolb Kolbra 912uls
N20386
550 hours

Steve Boetto

Joined: 11 Jan 2006
Posts: 365

Posted: Tue Apr 24, 2007 7:02 am Post subject: rotax 447 longevity

Ed,

  

 Bryan and I pulled the exhaust on my 447 just before the show. This engine  probably had Well over 100 hours on it.

 Results,  Very clean, almost like new. Rings loose, oily and clean.  The top of the piston had a mild coating of tan powder and the EGT probes were  tan and clean.  Hatch marks looked like new and only a very small line of  vertical wear.

  

 I run Pennzoil as recommended by Rotax  50:1 and I Fly at 5900 Rpm  with the Factory jets and settings.

  

 Simple and Pie        Or is it  cake

  

 do not archive

 Steve b



See what's free at AOL.com. 

  [quote][b]

lcottrell

Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or

Posted: Tue Apr 24, 2007 10:14 am Post subject: rotax 447 longevity

 	  Quote: 	
		       Im trying    to make a decision. Your input will help me make the right one. Has any one    ran a 447 to 100 hours without a decarbon using pennzoil?  Has anyone had    a 447 fail due to carbon under the rings before reaching 100 hours while using    Pennzoil air cooled exclusively? PLEASE, No oil war!   If you have    experience That falls in either of these categories, I would like to have your    imput, otherwise please dont respond.  Thanks in advance.    



           Ed    Diebel  (FF 62) 



Hi,

      I put 200 hours on a    447 with no decarbon or need to do so, using only Penn air cooled. No    noticeable reduction in power, very little carbon on the top of the cylinders.    Take your exhaust off and look at it. Do a compression check. A lot of the    carbon buildup comes with running the egt's too low. No one of us can tell you    it is alright without being able to look at it ourselves. However if I had not    obtained a 503, I would still be flying the 447 without a    "decarbon".

   Larry ,  Oregon

	
    [quote][b]

Steve Boetto

Joined: 11 Jan 2006
Posts: 365

Posted: Tue Apr 24, 2007 10:45 am Post subject: rotax 447 longevity

In a message dated 4/24/2007 11:03:17 A.M. Eastern Standard Time,  N27SB(at)aol.com writes:

  	  Quote: 	
		     I run Pennzoil as recommended by Rotax  50:1 and I Fly at 5900 Rpm    with the Factory jets and settings.

    

   Simple as Pie        Or is it    cake

    

   do not archive

   Steve b

	


 

 Forgot to add,   I pitch the prop for WOT level flight at 6600 +  a little.



See what's free at AOL.com. 

  [quote][b]

Snoopy Baxley

Joined: 09 Jan 2006
Posts: 42

Posted: Tue Apr 24, 2007 3:33 pm Post subject: rotax 447 longevity

Im trying to make a decision. Your input will help me make the  right one. Has any one ran a 447 to 100 hours without a decarbon using pennzoil?   Has anyone had a 447 fail due to carbon under the rings before reaching  100 hours while using Pennzoil air cooled exclusively? PLEASE, No oil war!    If you have experience That falls in either of these categories, I  would like to have your imput, otherwise please dont respond.  Thanks in  advance.  



           Ed  Diebel  (FF 62) 



  

 Hey Ed

 Got 166 hours on my 447 and no carbon build-up . I  am using seafoam with my Pennz-Oil Air Cooled

  

 Stephen

 Firefly

  

 Do Not  archive



See what's free at AOL.com. 

  [quote][b]

JetPilot

Joined: 10 Jan 2006
Posts: 1246

Posted: Tue Apr 24, 2007 8:31 pm Post subject: Re: rotax 447 longevity

Ed,



There is a lot of risk opening up an engine that does not need to be opened up.   There is always the chance of damaging something, or something being done wrong that could cause problems or a fialure.  Bottom line, dont work on an engine that has nothing wrong with it.



Remember, many times manuals are written by lawyers, not mechanics.  They may say decarbon every 2 hours, that covers their arse.  The dont care and they are not liable if the engine is damaged or put back together wrong by a mechanic...   So what do you think they are going to recommend ?  Get the picture ?



Mike

_________________
"NO FEAR" - If you have no fear you did not go as fast as you could have !!!

Kolb MK-III Xtra, 912-S

beauford

Joined: 25 Apr 2007
Posts: 127
Location: Brandon, FL

Posted: Wed Apr 25, 2007 12:52 pm Post subject: rotax 447 longevity

Ed:

 Whichever oil you use, if you start noticing any  extra carbon, my advice is not to wait... pull that little choke piston out of  the Bing and inspect the rubber in the bottom of it to make sure it is  still seating...  I now change that piston every year just because of the  prior carbon problems experienced due to deterioration of that rubber in the  base.

  

 Also, speaking of Rotax longevity, the DAR who was  here yesterday inspecting airplanes pointed out a serious problem with the Rotax  rope starters... can cost a man an engine, possibly even his airplane, with no  warning...   Mine was broken and I didn't even realize it...   There is an item about it , with a photo, posted on the Kolb Forum.

  

 Worth what ye paid fer it...

  

 Beauford

 Firefly 076

 Brandon, FL

 [quote]   ---

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