[Diy_efi] Injector angle

Andrew J. Hopton ahopton at optusnet.com.au
Mon Aug 16 13:25:50 GMT 2004


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You want to squirt the fuel right in to the back of the valve, if you =
can.  However, this is probably impossible for your setup - in which =
case you want to squirt the fuel as far as possible, towards the valve.  =
It is probably also a good idea to get as much angle (away from straight =
up & down) as you can, to keep the bulk of the spray pattern in the =
centre of the port cross-section (where the fastest/greatest airflow =
will be) to aid atomisation.  If none of this can be satisfactorily =
achieved, try determining where the hottest spot is that you CAN hit, as =
heat will help vaporise the fuel, airflow will do the rest...
  ----- Original Message -----=20
  From: GSMFN Allmaras=20
  To: 'A list for Do-It-Yourself EFI'=20
  Sent: Monday, August 16, 2004 6:41 PM
  Subject: [Diy_efi] Injector angle


  Can anybody tell me how to know the correct angle to put fuel =
injectors? I'm converting a ford 427 to port injection by modifying a =
carb intake. There are a few companies around that will convert intakes, =
but the ones I've seen  have the injectors straight up and down. This =
doesn't seam optimal to me as I don't ever recall seeing any OE port =
injection setup with the injectors straight like this. I have all the =
tools and time to do this the right way, I'm just not sure how to go =
about it. I can post more information on the engine if needed. Any tips =
or thoughts on this type of conversion would be greatly appreciated as =
well.  Thanks.

  Dustin


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<DIV><FONT face=3DArial size=3D2>You want to squirt the fuel =
right&nbsp;in to the=20
back of the valve, if you can.&nbsp; However, this is probably =
impossible for=20
your setup - in which case you want to squirt the fuel as far as =
possible,=20
towards the valve.&nbsp; It is probably also a good idea to get as much =
angle=20
(away from straight up &amp; down)&nbsp;as you can, to keep the bulk of =
the=20
spray pattern in the centre of the port cross-section (where the=20
fastest/greatest airflow will be) to aid atomisation.&nbsp; If none of =
this can=20
be satisfactorily achieved, try determining where the hottest spot is =
that=20
you&nbsp;CAN hit, as heat will help vaporise the fuel, airflow will do =
the=20
rest...</FONT></DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3Ddallmaras at ford.navy.mil =
href=3D"mailto:dallmaras at ford.navy.mil">GSMFN=20
  Allmaras</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">'A list for Do-It-Yourself =
EFI'</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Monday, August 16, 2004 =
6:41=20
  PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [Diy_efi] Injector =
angle</DIV>
  <DIV><BR></DIV>
  <DIV><SPAN class=3D533415208-16082004><FONT face=3DArial =
color=3D#0000ff size=3D2>Can=20
  anybody tell me how to know the correct angle to put fuel injectors? =
I'm=20
  converting a ford 427&nbsp;to port injection by modifying a carb =
intake. There=20
  are a few companies around that will&nbsp;convert intakes, but the =
ones I've=20
  seen &nbsp;have the injectors straight up and down. This doesn't seam =
optimal=20
  to me as I don't ever recall seeing any OE port injection setup with =
the=20
  injectors straight like this. I have all the tools and time to do this =
the=20
  right way, I'm just not sure how to go about it. I can post more =
information=20
  on the engine if needed. Any tips or thoughts&nbsp;on this type of =
conversion=20
  would be greatly appreciated as =
well.&nbsp;&nbsp;Thanks.</FONT></SPAN></DIV>
  <DIV><SPAN class=3D533415208-16082004><FONT face=3DArial =
color=3D#0000ff=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=3D533415208-16082004><FONT face=3DArial =
color=3D#0000ff=20
  size=3D2>Dustin</FONT></SPAN></DIV>
  <P>
  <HR>

  <P></P>_______________________________________________<BR>diy_efi =
mailing=20
  =
list<BR>diy_efi at diy-efi.org<BR>http://lists.diy-efi.org/mailman/listinfo/=
diy_efi<BR></BLOCKQUOTE></BODY></HTML>

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