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Econo jetting

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gaman(at)att.net
Guest

Posted: Fri Oct 19, 2007 9:55 am Post subject: Econo jetting

I think the last person to respond to my inquiry was Pete.Based on that assumption I would pose this question.2200 tuning info on line suggests 45 idle jet,250 main jet.276 needle jet and jabiru special needle.The markings on my main jet indicate 175,along with some etched symbols I can't identify.Any chance the factory rebored this 175 to make it a 250?The hole in this jet is .089

                                                      Thanks G.Aman

 [quote][b]

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jetboy

Joined: 22 Jul 2006
Posts: 233

Posted: Fri Oct 19, 2007 12:45 pm Post subject: Re: Econo jetting

Hi,

     you should download the current information JSL 002-2 april 2007 standard parts are idle jet .35mm  needle jet 2.85mm main jet 2.25mm with the revised needle pt. no. 4A131AOD.



I dont know if the previous needle is compatible with this latest revision,



I've had no problems in drilling out my earlier econo jets with metric drills of those sizes although an EGT audit afterwards showed that in cruise my mixture was over rich so I put back an original 2.76 needle jet to get the target readings.



Problems with routing of carb vent line or air intake to the carb will make a difference to tuning so be sure they are correct first. 



Ralph

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_________________
Ralph - CH701 / 2200a

Lynn Matteson

Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan

Posted: Fri Oct 19, 2007 1:33 pm Post subject: Econo jetting

That information, (JSL 002) has been "superseded" (my choice of a  

word) by JSB 018-1. According to JSB 018-1 paragraph 2.2:

  "Accordingly Service Letter JSB 002 has been cancelled and this  

Service Bulletin issued in it's place."



I don't know what constitutes a Service Letter versus a Service  

Bulletin, and it's apparent Jabiru doesn't either because they  

interchange them at will, but that's what came down the pipeline just  

recently...October 5, 2007, according to the download that I have.



Lynn Matteson

Grass Lake, Michigan

Kitfox IV Speedster  w/Jabiru 2200

flying w/420+ hrs



On Oct 19, 2007, at 4:46 PM, jetboy wrote:



 	  Quote: 	
		   

 <sanson.r(at)xtra.co.nz>



 Hi,

      you should download the current information JSL 002-2 april  

 2007 standard parts are idle jet .35mm  needle jet 2.85mm main jet  

 2.25mm with the revised needle pt. no. 4A131AOD.



 I dont know if the previous needle is compatible with this latest  

 revision,



 I've had no problems in drilling out my earlier econo jets with  

 metric drills of those sizes although an EGT audit afterwards  

 showed that in cruise my mixture was over rich so I put back an  

 original 2.76 needle jet to get the target readings.



 Problems with routing of carb vent line or air intake to the carb  

 will make a difference to tuning so be sure they are correct first.



 Ralph



 --------

 Ralph - CH701 / 2200a

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_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM

gaman(at)att.net
Guest

Posted: Fri Oct 19, 2007 2:22 pm Post subject: Econo jetting

Ralph,

      Thanks,I had an older copy of the first econo kit and not everything matched up. A little easier to tune with bing parts,but we can handle it.Thanks again

                               G.Aman 



jetboy <sanson.r(at)xtra.co.nz> wrote:[quote] --> JabiruEngine-List message posted by: "jetboy" 



Hi,

     you should download the current information JSL 002-2 april 2007 standard parts are idle jet .35mm  needle jet 2.85mm main jet 2.25mm with the revised needle pt. no. 4A131AOD.



I dont know if the previous needle is compatible with this latest revision,



I've had no problems in drilling out my earlier econo jets with metric drills of those sizes although an EGT audit afterwards showed [quote][b]

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