Love This

[Walter Sherwin]

Hey Greg, don't burst a bubble......... :)  !

Missouri-Rola came through, a copy is in the mail.

Walt.



-----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: Friday, January 29, 1999 1:40 PM
Subject: Re: Love This


>>Does anybody use a PWM fuel pressure regulator? Or know more about the
>>part referenced here?
>>http://efi332.eng.ohio-state.edu/diy_efi/archive/archive_num_88;lines=6114
-6151
>>
>> How about the aftermarket systems that come with tc/sc?   It just
>>seems funny to me to use mechanical regulators and vary pump speed,
>>instead of maintaining constant pump speed/volume and adjusting
>>regulated pressure.  It seems so simple, and no one does it, that
>>there must be a "catch".
>>
>>Shannen
>
>By now you prolly read my post on the subject. If you're doing nothing
>else, put a #$%ing float vent on the high point of the rails. This will
>cure vapor in the rails INSTANTLY!! And pump control in combo with a good
>PR WILL give more accurate control. Variable pumping WILL work alone, but
>not as well as in combo with a regulator (set up with pri/sec control). But
>if you are doing variable pumping alone, for $#% sakes, use a float vent on
>the rails, so as to get the #$#% bubbles back to the tank!!!
>
>Regards, Greg
>
>
>>Bruce Plecan wrote:
>>>
>>> -----Original Message-----
>>> From: James Weiler <james at brc.ubc.ca>
>>> To: diy_efi at efi332.eng.ohio-state.edu
<diy_efi at efi332.eng.ohio-state.edu>
>>> Date: Friday, January 29, 1999 1:07 AM
>>> Subject: RE: Love This
>>>
>>> For me it's not the plumbing that is the "news".  It's being able to
>>> manipulate
>>> fuel line pressure without needing a mechanical device.  As things sit
now
>>> for TPI the fuel pressure is referenced to engine vac/boost.  With this
>>> device
>>> a closed loop electrically controlled Fuel pressure trimmer is possible,
>>> meaning
>>> big injectors, lower pressure at idle, to help get reasonable pulse
widths.
>>> Bruce
>>>
>>> >Sorry to get in this late but so what?  I mean whats the advantage of
>a
>>> one line EFI vs. 2 fuel line set-up?  Besides less plumbing.
>>> >thanks
>>> >jw
>>> >
>
>