Subject: best Injectors to use.
From: Rotary Engine
Date: 6/9/2009, 2:51 PM
To: AAA Put this in the To box


  Does anyone have a suggestion for which injectors to use/
  I am running a second gen P Port.  Thanks for any help.

  Joe Berki

  Does not matter much Joe. If you are using four you need them
  rated at about 60 HP each at full rich (BSFC~ .6) The MSD 2018 would
  work
  OK.

  The newer, skinny injectors, seem
  to have a wider dynamic range. In other words they will turn on fast
  and off fast.

  Pick the injectors with the high resistance. Around
  10 to 15 ohms. Most of the newer injectors are like this.
  The older 1 ohm injectors (peak and hold) take special injector
  drivers.

  http://www.justfuelinjectors.com/servlet/StoreFront

  Paul Lamar


  Ops I forgot the data.

  Paul Lamar


  I would suggest getting an injector that uses the easy to get MSD-2400
  connector.  They are available from Summit Racing, and lots of other
  places, 8 for $24.  The MSD and Ford injectors injectors use them.  For
  Mazda injectors, some can use them, some need a minor modification, and
  others are different.  The green Ford 42 lb injectors are available at
  reasonable cost from www.buyfordracing.com.  8 injectors for $199.


  Bob W.



  I have available 4 of the Ford racing 42 lb injectors, will sell them
  for
  $100. Shipped free.
  C. Smith


  What are the part numbers on those Craig?
  Low impedance or high?

  Paul Lamar

  High impedance, PN is on the box. Numbers on the injector top are:
  XL3V-A9A,
  on the other side: 957 280 150 558 with 6 82 above that.
  C. Smith


C. Smith
I would like to buy them.
Blake

I'll send you his email address Blake.

Paul Lamar

  I found a set of 2007 Chevy Corvette injectors but I do not know the
specs
  on them.  Searched the web. Any thoughts? Thanks for any help

  Joe Berki
  Limo EZ

  They are probably 40 to 50 HP injectors. Do they look like this?

  Paul Lamar

Paul,

No, It is the injector on the bottom of the pic, sorry about the iimage.

Joe

That is a new one on me. Looks awful small for 50 HP.
They must have gone up on the pressure. Think they are 47 pound
which is about 100 HP each. You need to find out if they are
high impedance or low.

Paul Lamar


Paul,
I was not sure how they determined the impedanc but they measure with a
digital VOM about the same as the 2nd gen injectors.  While looking at
various Corvette sites it looks like they are 345 to 45 lbs injectors at 10
to 15 ohms.

Joe Berki
Limo EZ

Yes that is the way you do it. There is a big difference as the peak and hold
are only about 1 ohm.

Paul Lamar


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