[Diy_efi] Injector angle
GSMFN Allmaras
dallmaras at ford.navy.mil
Tue Aug 17 05:35:54 GMT 2004
I like the looks of MSD's 304ss injector caps that TIG weld onto 1/2" ss
tubing. If I angled the injectors slightly forward or aft to compensate for
the turn in the port I could use the MSD pieces and bend the tubing to
match. That might look pretty class without resorting to flex line. I will
angle the injectors as much to the side as practical as well. Thanks to all
that responded.
Dustin
-----Original Message-----
From: bearbvd at mindspring.com [mailto:bearbvd at mindspring.com]
Sent: Monday, August 16, 2004 6:38 AM
To: A list for Do-It-Yourself EFI
Subject: Re: [Diy_efi] Injector angle
At 10:44 PM 8/16/04, Andrew J. Hopton wrote:
>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...
The FE has fairly tall portsand they are short (at least in the head).
But--they do have a rather pronounced turn, and you can't really mount the
injectors right next to the manifold/head joint--as this would put them
under the valve covers ! I am thinking that a little bit of angle to one
side (as well as off of vertical) would help a bunch, but this would force
you into connecting the injectors with flex line rather than more
conventional straight fuel rails---
Greg
> ----- Original Message -----
> From: GSMFN Allmaras
> To: 'A list for Do-It-Yourself EFI'
> 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=Arial size=2>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...</FONT></DIV>
><BLOCKQUOTE
>style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px;
>BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
> <DIV
> style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color:
>black"><B>From:</B>
> <A title=dallmaras at ford.navy.mil
href="mailto:dallmaras at ford.navy.mil">GSMFN
> Allmaras</A> </DIV>
> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=diy_efi at diy-efi.org
> href="mailto:diy_efi at diy-efi.org">'A list for Do-It-Yourself EFI'</A>
</DIV>
> <DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, August 16, 2004 6:41
> PM</DIV>
> <DIV style="FONT: 10pt arial"><B>Subject:</B> [Diy_efi] Injector
angle</DIV>
> <DIV><BR></DIV>
> <DIV><SPAN class=533415208-16082004><FONT face=Arial color=#0000ff
>size=2>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.</FONT></SPAN></DIV>
> <DIV><SPAN class=533415208-16082004><FONT face=Arial color=#0000ff
> size=2></FONT></SPAN> </DIV>
> <DIV><SPAN class=533415208-16082004><FONT face=Arial color=#0000ff
> size=2>Dustin</FONT></SPAN></DIV>
> <P>
> <HR>
>
> <P></P>_______________________________________________<BR>diy_efi mailing
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>y_efi<BR></BLOCKQUOTE></BODY></HTML>
>
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