|
|
| Author |
Message |
PvtDuster
2 BBL ''SuperSix''
Joined: 24 Sep 2006
Posts: 13
|
|
Post subject:
Injector size???
(Fri Oct 27, 2006 11:26 am)
|
 |
|
|
Ok I'm currently building a 75 duster slant of course. My plans are to throw some efi and a blower at it and see how it does down the track. This will be my first efi build and I was wondering how big should I go with the injectors. I'm going to try to keep the blower mild something like 6 to 8 lbs. As for the efi system its self I'm thinking a throttle body from a ford lightening fast injectors mass air flow I'm not to sure I could use some input on that as well and a mega squirt ecu to tie it in together. Like I said this is my first efi setup so any input you can give me is greatly appreciated.
Thanks again,
Davidson
_________________
75 Duster 225, A904, MSD, striped interior, waiting for a supercharger and efi
76 Mustang II 302 auto - Not Stock
92 Loyal - Thats The One You Want!
|
|
| Back to top |
|
Sam Powell
Supercharged
Joined: 04 Jun 2006
Posts: 3173
Location: Gaithersburg MD
|
|
Post subject:
(Fri Oct 27, 2006 12:09 pm)
|
|
|
|
I have 30lb injectors on what is a very simlarly powered engine. That was recommended by rance, and they have worked out well. I tidles well, and has never run out of fuel because of injector size. I had early fueling problems that were solved with a surge tank.
Sam_________________ A REAL professional is someone who knows when to hit it with a bigger hammer.
 |
|
| Back to top |
|
Dart270
Board Sponsor & Moderator
Joined: 21 Oct 2002
Posts: 9609
Location: Blacksburg, VA
|
|
Post subject:
(Fri Oct 27, 2006 2:34 pm)
|
|
|
|
For that much boost, you are looking at 28-36lbs injector size range for good all around performance. Could maybe use 40-45, but that would not be necessary.
Lou
_________________
Return of the 64 Dart. Hang on...
|
|
| Back to top |
|
Pierre
Board Sponsor
Joined: 08 Feb 2003
Posts: 3643
Location: CA
|
|
Post subject:
(Fri Oct 27, 2006 4:34 pm)
|
|
|
|
Check out www.megamanual.com it has a chart and calculator for what size injectors support what kind of HP. You always want one or two sizes bigger to allow room for growth.
Try and find some high impedance ones if your running MS so you don't have to worry about pwm parameters or resistors.
|
|
| Back to top |
|
Matt Cramer
Board Sponsor
Joined: 01 Nov 2002
Posts: 1516
Location: Oxford, Georgia
|
|
Post subject:
(Fri Oct 27, 2006 6:22 pm)
|
|
|
|
| I'm using 440 cc/min (42 lb/hour) injectors off a Supra Turbo on mine. They're low impedance and I'm running their matching Toyota injector resistor pack. The size may be a little bit of overkill, but it still idles pretty well for a car with no idle air controller. |
|
| Back to top |
|
PvtDuster
2 BBL ''SuperSix''
Joined: 24 Sep 2006
Posts: 13
|
|
Post subject:
(Sun Oct 29, 2006 1:23 am)
|
|
|
|
Thanks for all the input. I've never done anything other then v8 carbureted.
-Davidson
_________________
75 Duster 225, A904, MSD, striped interior, waiting for a supercharger and efi
76 Mustang II 302 auto - Not Stock
92 Loyal - Thats The One You Want!
|
|
| Back to top |
|
|
