Re: [Chrysler300] 300 D Fuel injection summary
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Re: [Chrysler300] 300 D Fuel injection summary





A few comments here from me.  First, I am not an FI guy so I'm only passing on what I've heard.

The current 300D FI car as the story was told to me by a very reliable source is that the owner has a friend that is involved with Volvo and some of the items on this car is not as Chrysler/Bendix built it back in the day.  Possibly when the story is told on Leno's program it will reveal more details on this.  I was told that this example was fast with carbs but when the FI was installed and dialed it the car became very fast.

Yes, I believe Tom White was the person who had the FI DeSoto and made it run.  Running and driving are two different stories.  If memory serves me that car has sense been sold to at least one new owner.

Just over the weekend I had a conversation with a Chrysler enthusiast who is also an Electrical Engineer and he is currently working on a cross ram version of such.  He implied that the 300D now in operation was not that big of a task to do but I guess that is if you have a background, and know how and where to source parts.

Last, there are at least three other FI examples in CA and from what I understand a complete set up for at least one.  I've not seen any of the three but the source providing info is once again very credible.

John Lazenby

On Tuesday, April 16, 2019, 11:49:08 AM PDT, 'John Grady' jkg@xxxxxxxxxxxxxxxxx [Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx> wrote:


 

Hi Bob,

 

You can get it to work as well as it did then,  which was unacceptably bad, terrible even. ..reread the tech stuff, as to why . Design and pieces were poor, but terrific attempt for the time, correct ideas. . Problems like hydraulic lock in the motor (leaking injectors fill the cylinders--sometimes) , fires, washed out ring seals, stalling , cylinders rich and lean, gas in oil, etc etc Mechanical contacts that rubbed (!) at 12V picked the cylinder to squirt. (second distributor ) Remember it was an open loop system , no O2 sensor…nothing like today’s FI.  Had no idea in its control , of the AF ratio it was getting (today, as opposed to yesterday, or at dealer )  . I believe that one Desoto has a later FI brain behind it—although not 100% sure of that. . I am an EE too, can tell you that the design, as it was then , will not work more than 1000 miles or a few weeks. If it works well enough to move 1000 feet at all. Same decision Chrysler came to…correctly . One can baby anything, like a crystal set ‘works” , too ….but none survived.

 

GM vacuum /mechanical Rochester FI was a continuous flow system, as opposed to timed port injection on the Chrysler,  way easier, no electrics really. It worked. I had a 60 vette with it, long ago. Also had 70’s Mercedes Jetronic, it was a dog, although some had good luck with it (450/500SL) .Cheap computers , self learning concept to tune it, and large memory maps, --and O2 sensor makes it work well today , along with the really good electric injectors now, after 55 years of development. .

 

I believe that fellow was Tom White, lives not far from me, in Mass, but I never met him. I hope to one day….

 

John Grady

 

From: scooter465@xxxxxxx [mailto:scooter465@xxxxxxx]
Sent: Tuesday, April 16, 2019 2:22 PM
To: John Grady
Cc: mjraguse@xxxxxxx; Chrysler300@xxxxxxxxxxxxxxx; Jim Bartuska
Subject: Re: [Chrysler300] 300 D Fuel injection summary

 

Hi

It can be done a guy with a 58 DeSoto adventure did it.

I think he was a electrical engineer.

Made up grades to capacitors etc.

Can’t remember his name I think it was White. Saw car at Hersey years ago.

Bob Haag

 

Sent from my iPhone


On Apr 16, 2019, at 1:24 PM, 'John Grady' jkg@xxxxxxxxxxxxxxxxx [Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx> wrote:

 

Hi Marv,

 

I believe FI data  is on Master Bob M’s terrific club site, on tech pages?

 

Thank you to all who helped me gather all that data for the FI report, especially Jim Bartuskas,  and Alan and Gloria  . Any tech questions about FI unit proper, just ask. Not viable to try to get one going,  as originally made by Chrysler, read the site ,you will see quite severe inherent issues with the design.. Right track, but way way too early. ….. If you have one, a museum piece , really.

 

Thought about adding say FAST or ~ 2002 JEEP V8 system to the old Bendix throttle bodies, but a lot of work and not “real” …

 

Best regards,

 

John Grady

 

From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of mjraguse@xxxxxxx [Chrysler300]
Sent: Tuesday, April 16, 2019 9:43 AM
To: Chrysler300@xxxxxxxxxxxxxxx
Subject: [Chrysler300] 300 D Fuel injection summary

 





A few weeks ago a summary of FI volumes per Gil's information was discussed. I was traveling and wanted to revisit the numbers and comments etc.  of the Bendix system. Now I can't find the email.  Please help.  Thanks   
Marv







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Posted by: John Lazenby <french_fryguy@xxxxxxxxx>


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