REFLECTOR: fuel feed - my solutions

[michalk]

No need to apologize.  I found your analysis informing, even if it was 
based on wrong assumptions, like the vapor pressure, and other pressures 
involved in the system.

I think the burp valve is a good idea.  That one was mine.  Thanks.

Jim Sower wrote:
> 
>     Oh Boy!!
> 
> Pat, I sure do wish you'd posted that diagram yesterday or so.  Color me 
> RED in the FACE
> 
> What I had been told the factory system looked like differed from your 
> diagram in that instead of a "+" fitting with *all three* vents joined 
> to the outside vent.  I had the strakes "T"d to the outside vent and the 
> sump vent stand-alone, connected to *nothing*.  I've spent the better 
> part of a day off and on chasing foul balls and getting real exercised 
> when nobody seemed inclined to follow me.  Talk about apples and 
> oranges!  Sheesh!
> 
> Brett, Keith and all,
> Please accept my apologies.  As you have probably noted, when I'm 
> frustrated, I tend to get pretty assertive.  Today, the wheels came off, 
> and for *nothing*.  I am truly sorry for my tone as well as the flawed 
> content of my all-too-numerous posts.  Looking at Pat's diagram, the 
> factory system pretty much answers my concerns.  It *is* a closed 
> system, which is what I was trying to achieve by capping my sump vent. 
> 
> The only change I would even *consider* would be a second check valve in 
> the sump vent so it could "burp" but not drain by itself ... and even 
> that was someone else's idea ... Keith? ... I forget.
> 
> Anyway, I really stepped on my pork here, and I apologize to all ... Jim S.
> 
> 
> 
> Pat Shea wrote:
> 
>>The Factory's recommended fuel vent design utilizing a
>>check valve has both main tank vents and the sump vent
>>tied together via a vent manifold. Diagram attached.
>>
>>Pat
>>
>>
>>
>>6.  All the while, the engine is consuming upwards of
>>15 gph of fuel.  Since the sump is vented and the sump
>>vent is open, it will happily deliver fuel to the
>>engine which will be very easily replaced by air
>>flowing quite freely thank you very much, through the
>>unrestricted sump vent.  As the fuel consumption of
>>the engine surpasses what the mains are able to
>>deliver (having been slowed to a relative trickle by
>>the increasing "vacuum") the fuel level in the sump
>>will begin to drop.
>>
>>
>>		
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