[Diy_efi] power steering pump relocation

Mark Linder mark.linder at verizon.net
Wed Apr 2 01:22:49 GMT 2003


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Most of the buggy classes in desert racing have a rear mounted pump
setup.  Most of them use a GM style pump from an aftermarket supplier -
like Tommy Lee or AGR.  The factory GM pumps were not reliable enough.
Some guys use #6 line, but #8 really seems to be the standard.
 
Mark
 
 
----- Original Message ----- 

From: Scott  <mailto:sfwilliams at comcast.net> F. Williams 
To: List for general do-it-yourself EFI  <mailto:diy_efi at diy-efi.org>
talk 
Sent: Tuesday, April 01, 2003 3:13 PM
Subject: [Diy_efi] power steering pump relocation

Folks, I'm converting to an electric power steering pump in my vehicle.
This pump was originally positioned in the engine bay with approximately
3.5 foot long feed and return lines. My intent is to mount the pump
inside the cabin -probably behind the passenger's seat or even in the
spare tire well. My question is whether or not the extra length should
be a concern. The application here is a VW Scirocco. The distance from
firewall to the seat area is about 4 feet. The spare tire well is an
additional 4 feet beyond that point, I estimate.
 
Question: Should this extra tubing length pose any issues from a pumping
efficiency point of view? Forget about calculations here. Just let me
know your gut feeling about it, please.
 
Thanks,
 
P.S. My primary motivation here is to move the weight as low as possible
and farther back for best weight distribution.
'--
Scott F. Williams
Team Director
Usually Sideways Rally Team  

-----Original Message-----
From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]On
Behalf Of CJ Virtual
Sent: Tuesday, April 01, 2003 3:49 PM
To: List for general do-it-yourself EFI talk
Subject: Re: [Diy_efi] Turbos - spooling etc



When you kick that much oxygen from the air in the exhaust, it creates a
very lean condition. This lean condition will cause a situation similar
to that of a blow torch and can result in the blades on the turbine
melting (burning). This how ever depends on hoy much air you inject.
Anothe question is, what flow rate will give y  ou the air needed.  


You can spool easier by using NOs. Nos kicks in extra fuel and oxygen,
then the turbo takes over 


 Bill Washington <bill.washington at nec.com.au> wrote: 


Fellas,
A crazy thought just occurred to me - does anyone know if the 
following has been tried, and if so with what results:
If a compressed air bottle was plumbed into the exhaust manifold 
(pre-turbo) through an electronically controlled valve arranged to give 
a (short) injection of HP air into the manifold when the WOT switch is 
hit, it should help spool the turbo quickly and give a (false) lean 
indication on the lambda sensor which should result in a brief 
enrichment - Rats, just remembered - the Lambda is ignored at WOT - Just

a wild thought from someone with no direct experience playing with
turbos.

Bill W



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<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D009490901-02042003>Most=20
of the buggy classes in desert racing have a rear mounted pump =
setup.&nbsp; Most=20
of them use a GM style pump from an aftermarket supplier - like Tommy =
Lee or=20
AGR.&nbsp; The factory GM pumps were not reliable enough.&nbsp; Some =
guys use #6=20
line, but #8 really seems to be the standard.</SPAN></FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D009490901-02042003></SPAN></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D009490901-02042003>Mark</SPAN></FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2></FONT>&nbsp;</DIV>
<DIV align=3Dleft>----- Original Message ----- </DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
  <BLOCKQUOTE=20
  style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
    <DIV=20
    style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
    <A title=3Dsfwilliams at comcast.net =
href=3D"mailto:sfwilliams at comcast.net">Scott=20
    F. Williams</A> </DIV>
    <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Ddiy_efi at diy-efi.org=20
    href=3D"mailto:diy_efi at diy-efi.org">List for general do-it-yourself =
EFI=20
    talk</A> </DIV>
    <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Tuesday, April 01, 2003 =
3:13=20
    PM</DIV>
    <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [Diy_efi] power =
steering pump=20
    relocation</DIV>
    <DIV><BR></DIV>
    <DIV><SPAN class=3D010495320-01042003><FONT face=3DArial =
color=3D#0000ff=20
    size=3D2>Folks, I'm converting to an electric power steering pump in =
my=20
    vehicle. This pump was originally positioned in the engine bay with=20
    approximately&nbsp;3.5 foot&nbsp;long feed and return lines. My =
intent is to=20
    mount the pump inside the cabin -probably behind the passenger's =
seat or=20
    even in the spare tire well. My question is whether or not the extra =
length=20
    should be a concern. The application here is a VW Scirocco. The =
distance=20
    from&nbsp;firewall to the seat area is about&nbsp;4 feet. The spare =
tire=20
    well is an additional&nbsp;4 feet beyond that point, I=20
    estimate.</FONT></SPAN></DIV>
    <DIV><SPAN class=3D010495320-01042003><FONT face=3DArial =
color=3D#0000ff=20
    size=3D2></FONT></SPAN>&nbsp;</DIV>
    <DIV><SPAN class=3D010495320-01042003><FONT face=3DArial =
color=3D#0000ff=20
    size=3D2>Question: Should this extra tubing length pose any issues =
from a=20
    pumping efficiency point of view? Forget about calculations here. =
Just let=20
    me know your gut feeling about it, please.</FONT></SPAN></DIV>
    <DIV><SPAN class=3D010495320-01042003><FONT face=3DArial =
color=3D#0000ff=20
    size=3D2></FONT></SPAN>&nbsp;</DIV>
    <DIV><SPAN class=3D010495320-01042003><FONT face=3DArial =
color=3D#0000ff=20
    size=3D2>Thanks,</FONT></SPAN></DIV>
    <DIV><FONT size=3D2><SPAN class=3D010495320-01042003><FONT =
face=3DArial=20
    color=3D#0000ff></FONT></SPAN></FONT>&nbsp;</DIV>
    <DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
    class=3D010495320-01042003>P.S. My primary motivation here is to =
move the=20
    weight as low as possible and farther back for best weight=20
    distribution.</SPAN></FONT></DIV>
    <DIV><FONT size=3D2><SPAN class=3D010495320-01042003><FONT =
face=3DArial=20
    color=3D#0000ff>'</FONT></SPAN>--<BR>Scott F. Williams<BR>Team=20
    Director<BR>Usually Sideways Rally Team&nbsp;</FONT> </DIV>
    <BLOCKQUOTE>
      <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
      size=3D2>-----Original Message-----<BR><B>From:</B>=20
      diy_efi-bounces at diy-efi.org =
[mailto:diy_efi-bounces at diy-efi.org]<B>On=20
      Behalf Of </B>CJ Virtual<BR><B>Sent:</B> Tuesday, April 01, 2003 =
3:49=20
      PM<BR><B>To:</B> List for general do-it-yourself EFI=20
      talk<BR><B>Subject:</B> Re: [Diy_efi] Turbos - spooling=20
      etc<BR><BR></FONT></DIV>
      <P>When you kick that much oxygen from the air in the exhaust, it =
creates=20
      a very lean condition. This lean condition will cause a situation =
similar=20
      to that of a blow torch and can result in the blades on the =
turbine=20
      melting (burning). This how ever depends on hoy much air you =
inject.=20
      Anothe question is, what flow rate will give y&nbsp; ou the air=20
      needed.&nbsp;=20
      <P>You can spool easier by using NOs. Nos kicks in extra fuel and =
oxygen,=20
      then the turbo takes over=20
      <P>&nbsp;<B><I>Bill Washington =
&lt;bill.washington at nec.com.au&gt;</I></B>=20
      wrote:=20
      <BLOCKQUOTE=20
      style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff =
2px solid">Fellas,<BR>A=20
        crazy thought just occurred to me - does anyone know if the=20
        <BR>following has been tried, and if so with what results:<BR>If =
a=20
        compressed air bottle was plumbed into the exhaust manifold=20
        <BR>(pre-turbo) through an electronically controlled valve =
arranged to=20
        give <BR>a (short) injection of HP air into the manifold when =
the WOT=20
        switch is <BR>hit, it should help spool the turbo quickly and =
give a=20
        (false) lean <BR>indication on the lambda sensor which should =
result in=20
        a brief <BR>enrichment - Rats, just remembered - the Lambda is =
ignored=20
        at WOT - Just <BR>a wild thought from someone with no direct =
experience=20
        playing with turbos.<BR><BR>Bill=20
        =
W<BR><BR><BR><BR>_______________________________________________<BR>Diy_e=
fi=20
        mailing=20
        =
list<BR>Diy_efi at diy-efi.org<BR>http://www.diy-efi.org/mailman/listinfo/di=
y_efi</BLOCKQUOTE>
      <P><BR>
      <HR SIZE=3D1>
      Do you Yahoo!?<BR><A=20
      =
href=3D"http://us.rd.yahoo.com/finance/mailsig/*http://tax.yahoo.com">Yah=
oo!=20
      Tax Center</A> - File online, calculators, forms, and =
more</BLOCKQUOTE>
    <P>
    <HR>

    <P></P>_______________________________________________<BR>Diy_efi =
mailing=20
    =
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