[T3] fuel pump output -error

[Dave Hall]

That's interesting.  The Type 4 doesn't seem to have the same internal
arrangement in the fuel tank.  Both feed and return are fastened into a
single tank opening, though as separate pipes.  I'm not completely sure, but
it looks as if it may not have the replenished cup with venturi 'pump'.
Maybe Type 4s are as different as they look!  Anyone know for certain?

Dave.
UK VW Type 3&4 Club
===================

-----Original Message-----
From: type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of
Bobsnotch at aol.com
Sent: 01 March 2011 03:44
To: type3 at vwtype3.org
Subject: Re: [T3] fuel pump output -error

 
In a message dated 2/28/2011 10:15:29 P.M. Eastern Standard Time,
jadney at vwtype3.org writes:

Now that  I've had a bit more time to think about this, I can imagine very
short  extreme times when the flow from one pump might not be enough for a
big  engine. To make this work, you'd want to put the 2 pumps in parallel.
Are  you sure Ray put them in series?





I think Ray is using 1 pump as a "lifting" pump (like a rabbit has), and the
other pump is the main supply pump. What he's doing, by doing this, is to
ensure that fuel delivery isn't an issue with his closely tuned t-4 engine
(where pressure deviations of 2 psi can cause a lean condition). He's been
playing with it for years, and found fuel delivery to be a problem (using
the  stock pump).  

Bob 65 Notch  S with sunroof and IRS (Krusty)
71 Notch (Krunchy)
64 T-34 Ghia  (Wolfie)
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.vwtype3.org/private.cgi/type3-vwtype3.org/attachments/20110228
/fc133851/attachment.htm>
_______________________________________________
VWType3.Org mailing list - type3 at vwtype3.org
http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
Contact gregm at vwtype3.org if you need help with the list.