More Fuel Return

[Bruce Plecan]

-----Original Message-----
From: Greg Hermann <bearbvd at sni.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Tuesday, October 20, 1998 6:58 PM
Subject: Re: More Fuel Return


Just wish GH would say what's really on his mind<g>.
By the way for those really serious about fuel and heat
there is a product line called Fire Braid.  It's what they
use on the really fast cars to keep heat off wiring/fuel
lines.  Used to be ads in Circle Track for retailers.
Also, remember when running AN lines they are for
lack of a better word heat magnets.
Bruce

>>> I have read about even high pressure fuel injection systems with tank
>>> return still having vapor lock problems with frame rail mounted pumps.
>>> They even have pump overheating problems even though the full fuel flow
>>> is running THROUGH the pump motor.  The only thing that will solve some
>>> of these is going to an in the tank pump.
>>
>>Ummmm, i dunno about that...There are an awful lot of Fords similar
>>to mine running around here with frame rail mounted pumps. We've
>>had our share of hot summers since it was manufactured in '89.
>>BTW--see also Volvo, Peugot, and other Bosch systems that use an
>>external pump (link available on the DIY_EFI website though the
>>material only hints at where the pump is actually mounted).
>>
>>I think this whole thread started innocently enuf as someone
>>mentioned that even an in-tank pump will not be submersed when
>>fuel level gets low in the tank.
>>
>>Please don't take this as a personal attack, I'm just trying
>>to point out that you can't believe everything you read.
>>Especially not here!  :)
>>
>OK, enough BS and mis-information!!-- I have had SEVERAL Volvos with
>D-jet--both four and six cylinder. They have a frame mounted pump.
>ESPECIALLY with the sixes (164's with the B-30, in line motor) you can make
>them vapor lock AT WILL!! They do not have a cross flow head, and the
>radiated heat from the top of the exhaust ports and exhaust manifolds COOKS
>the fuel in the rails. Only simple solution is to shield and insulate the
>rails AND run small coolers (about like a power steering cooler on BOTH the
>supply and return lines.>