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Airflow Performance Fuel Injection

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rv10builder(at)bellsouth.
Guest

Posted: Thu May 18, 2006 6:11 pm Post subject: Airflow Performance Fuel Injection

I was just looking over my new Airflow Performance fuel injection system 

and noticed the purge valve with a return fitting.  How does anyone 

using this system plan on connecting it up?



Brian

#40308

http://www.mykitlog.com/rv10builder

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Dave(at)AirCraftersLLC.co
Guest

Posted: Thu May 18, 2006 8:19 pm Post subject: Airflow Performance Fuel Injection

Brian,



One thing to consider with the purge valve:



We worked on a plane that had the valve oriented so the shaft pointed up.

We had replaced the engine isolators among other work and I suspect rasied

the engine a tiny bit.  We ran it without the cowl for a while, and it ran

fine.  When we put the cowl on (I know, we should have checked), the top

cowl barely contacted the purge valve shaft, pressing it down into its

housing.  That kept the engine from starting since the shaft displacement

created an extreme over-rich condition.  Cowl on, no start.  Cowl off, ran

great.  That took a while to figure out...make sure the shaft is well clear!



That installation ran the purged fuel back to a header tank (ideally...).



Dave Saylor

AirCrafters LLC

831-722-9141

40394 QB, wings done, baggage floors in



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recapen(at)earthlink.net
Guest

Posted: Fri May 19, 2006 2:41 am Post subject: Airflow Performance Fuel Injection

I have an andair duplex valve and will be returning the purge fuel back to 

the same tank...otherwise, you need to placard for selecting the same fuel 

side that your return is plumbed to or risk pumping it overboard.



My purge valve is mounted 'lay-down' style insteda of between the cylinders 

as I am using a sam james plenum.  Contact AirflowPerformance - they can 

swap out the purge valve if you need to avoid cowl interference issues.

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carl.froehlich(at)cox.net
Guest

Posted: Fri May 19, 2006 1:59 pm Post subject: Airflow Performance Fuel Injection

I run the Airflow Performance on my RV-8A.  I use the purge valve for engine

shut down, but it's main function is to eliminate vapor lock in the spider

for hot starts (never had to do this - 250 hrs so far).



I have the purge line plumbed back to one tank.  Considering the very

infrequent use for purging, and that purge volume is only a few ounces, they

is no need for a duplex fuel valve.



Carl Froehlich

RV-10 (tail)

RV-8A (flying)



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rv10builder(at)bellsouth.
Guest

Posted: Fri May 19, 2006 5:46 pm Post subject: Airflow Performance Fuel Injection

Thanks for the responses; all contained good information!  After a 

little searching on the WEB I found an attractive solution:



http://www.rvproject.com/20030516.html



Thanks Dan!



rv10builder wrote:



 	  Quote: 	
		   I was just looking over my new Airflow Performance fuel injection 

 system and noticed the purge valve with a return fitting.  How does 

 anyone using this system plan on connecting it up?



 Brian

 #40308

 http://www.mykitlog.com/rv10builder

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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PILOTDDS(at)aol.com
Guest

Posted: Fri May 19, 2006 8:40 pm Post subject: Airflow Performance Fuel Injection

Instructions are very clear and it is a great system.Good people to work with.

 

             &nbs p;            &n bsp;    728DD

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