[lr172]

I am working on FWF on my 6A with O-320. I am using a Tee at the carb inlet and the end connection is getting close to the exhaust. At the first pass, my braided hose/connector is a bit over an inch from the exhaust and it seemed too close. i can put in a 45* elbow and get it to about 3".

I was wondering the general consensus on what distance is considered safe. I considered making a heat shield as well. The fuel line will have fire shield.

Thanks for your guidance here.

Larry

 

[DanH]

Larry, there is no minimum distance, but there are maximum temperatures. Your goal is to keep the fuel less than 130~140F ballpark. Don't settle for less than a maximum possible distance. If you can get 3" from a hot object by using another fitting, do it. If something else will move it out to 5", do that too.

 

[Michael Burbidge]

My solution

Larry,

Check out this thread for the solution I arrived at. I did not like the routing suggested by the plans and so had a custom line made by ts flight lines.

http://www.vansairforce.com/community/showthread.php?t=100419

Michael

 

[airguy]

Also, it would be a good idea to put a heat shield on the exhaust line where the fuel lines make their closest approach.

http://vansaircraft.com/cgi-bin/store.cgi?ident=1418145154-108-156&browse=engines&product=heat-shields