RE: #24 FMS Injectors

From: Bob Mankin (bob@coralfarms.com)
Date: Wed Mar 12 2003 - 13:33:05 EST


So Rich, what HP are you making that suggests 36# is necessary? If you're
anything less than 400 rwhp, those shouldn't even be in the picture. The
truck won't even idle cold with 36# unless the PCM is remapped. Been there,
done that.

Bob

> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf Of
> Wisotzkey,
> Rich
> Sent: Wednesday, March 12, 2003 9:02 AM
> To: 'dakota-truck@dakota-truck.net'
> Subject: RE: DML: #24 FMS Injectors
>
>
>
> Hi Bob,
> My engine has ample modification to support larger than 24lb
> injectors.
> Under stock fuel pressure, 24lb injectors will not support
> the horsepower
> being generated. The engine has been on a diagnostic
> computer, and I've
> analyzed the dyno runs, voltage readings, and injector
> calculations. The
> only thing not verified is the fuel pressure, and I will be
> checking that.
> I said I was going to experiment with the 36lb'ers. I ran
> across a "one
> time only" deal on some 36lb injectors that I couldn't pass
> up. I will most
> likely be running 30lb'ers when everything is said and done.
> Rich - Ashburn, VA
>
> -----Original Message-----
> From: Bob Mankin [mailto:bob@coralfarms.com]
> Sent: Wednesday, March 12, 2003 10:30 AM
> To: dakota-truck@dakota-truck.net
> Subject: RE: DML: #24 FMS Injectors
>
>
>
> You can't jump 50% up in injector size and expect the PCM to
> have any hope
> of controlling them in open loop mode. It will be difficult
> enough in closed
> loop with the O2 sensors helping out.
>
> Unless your 318 is blown and has heavy head port work, it's
> not likely you
> need more than 24#. This is based on widely accepted fuel injector
> calculators. What are you measuring A/F with to suggest that
> it's lean?
>
> Bob
>
> > -----Original Message-----
> > From: owner-dakota-truck@bent.twistedbits.net
> > [mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf Of
> > Wisotzkey,
> > Rich
> > Sent: Wednesday, March 12, 2003 6:55 AM
> > To: 'dakota-truck@dakota-truck.net'
> > Subject: RE: DML: #24 FMS Injectors
> >
> >
> >
> > Initially, I'll be using a Mopar PCM to control the 36lb
> > injectors. Yes,
> > 30lb injectors would probably be large enough, but I'm going to be
> > experimenting with 36lb injectors.
> >
> > -----Original Message-----
> > From: Bernd D. Ratsch [mailto:bernd@texas.net]
> > Sent: Wednesday, March 12, 2003 8:29 AM
> > To: dakota-truck@dakota-truck.net
> > Subject: RE: DML: #24 FMS Injectors
> >
> >
> >
> > What are you going to use to control the 30# injectors?
> >
> > - Bernd
> >
> >
> > -----Original Message-----
> > From: owner-dakota-truck@bent.twistedbits.net
> > [mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of
> > Wisotzkey,
> > Rich
> > Sent: Wednesday, March 12, 2003 5:44 AM
> > To: 'dakota-truck@dakota-truck.net'
> > Subject: RE: DML: #24 FMS Injectors
> >
> >
> >
> > John,
> > It's a 318, but it breathes very well!
> > Rich
> >
> > -----Original Message-----
> > From: Pukeloser@aol.com [mailto:Pukeloser@aol.com]
> > Sent: Tuesday, March 11, 2003 2:57 PM
> > To: dakota-truck@dakota-truck.net
> > Subject: Re: DML: #24 FMS Injectors
> >
> >
> >
> > Damn!
> >
> > Starving for fuel with 24# injectors? what size motor do you have?
> >
> > John S
> >
> >
>



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