Re[2]: Electric fuel pump & my new fuel filter

[jadney@vwtype3.org (Melissa & Jim)]

>From: Toby Erkson <Toby_Erkson@ccm2.hf.intel.com>

>Good God!  I like the oil pressure switch idea!  Maybe a fuel pressure 
>switch at the end carb so if the pressure drops it kills the pump.  My fuel 
>line goes to one carb.  That carb then feeds the second one.  Dellorto 
>carbs.

It's very important to understand that the usual mechanical fuel pump stops 
automatically anytime the engine stops, but the the usual electric fuel pump 
hookup only goes off with human intervention.  The difference in an accident 
could be the loss of your car, or worse.

Some kind of automatic safety kill feature is a really important feature if 
you're going to use an electric fuel pump.  I had always thought one could 
just continue to use the original distributor, computer, and relays to 
control the pump.  The oil pressure switch is a much simpler idea.  I don't 
think the switch contacts will hold up to the full pump current, however, 
but it would be trivial to let an oil pressure switch control the original 
relay.

Jim
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       Melissa Kepner                                    Jim Adney
       jadney@vwtype3.org              jadney@vwtype3.org
                             Laura Kepner-Adney
                             Madison, Wisconsin
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