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NCtim
Tim Shumbera
Western North Carolina
(239 posts)

Registered:
01/19/2012 04:35PM

Main British Car:


Fuel Injection question
Posted by: NCtim
Date: June 02, 2015 04:06PM

Hey guys,

Greg on this site has a Federal system FI for sale. I'm seriously interested in this but it doesn't have an ecu with it. This is a somewhat analog system and fits nicely under the hood of a stock body. Does anyone have a recommendation for a control unit? Roger Williams has a good explanation of how this works and 200 bhp is possible with this induction system.

Thanks!


Moderator
Curtis Jacobson
Portland Oregon
(4576 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: Fuel Injection question
Posted by: Moderator
Date: June 03, 2015 03:11AM

Some photos of the Federal style manifold, plenum, and throttle body may be found here: Barry Yardley Article (Injectors can just barely be seen. Fuel rail not clearly shown.) I'm sure you could use these parts with MegaSquirt or some other control system. You'd need to make your own wire harness and solve all the usual sensor issues. Is there any significant advantage of Federal parts compared with later (e.g. 14CUX) hardware? Does the plenum top sit a little lower?


NCtim
Tim Shumbera
Western North Carolina
(239 posts)

Registered:
01/19/2012 04:35PM

Main British Car:


Re: Fuel Injection question
Posted by: NCtim
Date: June 03, 2015 04:27PM

Curtis,

The plenum does sit lower and if it still doesn't fit (depending on where your engine sits) you only have to machine one small area (up to 1.3" can come off) to make it fit. I like it because it's simple and I don't believe the MegaSquirt will run it, it's basically an analog system with a flapper valve/potentiometer control.

Tim


DiDueColpi
Fred Key
West coast - Canada
(1365 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
I really thought that I'd be an action figure by now!

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Re: Fuel Injection question
Posted by: DiDueColpi
Date: June 03, 2015 07:42PM

That's the beauty of the megasquirt or any of the other speed/density systems Tim.
You get to throw the barn door air flow sensor away!
You've got the basics with the manifold, injectors, throttle, sensors etc.
The ECU can pretty much be anything that you want to use.

Cheers
Fred


NCtim
Tim Shumbera
Western North Carolina
(239 posts)

Registered:
01/19/2012 04:35PM

Main British Car:


Re: Fuel Injection question
Posted by: NCtim
Date: June 04, 2015 05:20PM

Fred,

I always appreciate your replies, but, while I am very good mechanically, I'm an idiot when it comes to electronics. That's what my IT guy is for. Hell, I can't even figure out my smart phone and I've had it for 7 or 8 years. I spent a good week on the MegaSquirt site and my brain filled up and ran out my ears.

Tim


DiDueColpi
Fred Key
West coast - Canada
(1365 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
I really thought that I'd be an action figure by now!

authors avatar
Re: Fuel Injection question
Posted by: DiDueColpi
Date: June 04, 2015 11:44PM

Tim,

I'm pretty happy if I can get my flip phone to open on the third try!
I know that most everyone here is pro Megasquirt, And so am I.
It's powerfull, cheap, and endlessly adjustable.
But , It's very intimidating for the novice.
So for your first system, I recommend the SDS systems highly.
They are straight forward, easy to understand, simple to set up, reliable and tune without the use of a computer.
It's not right to call it a beginners system as it's a very capable setup.
What it does very well is make sense to someone who doesn't tune a fuel system every day.
I've used them on everything from a 50 hp Renault to a 3800 hp twin turbo BBC so adjustability isn't an issue.
I have no affiliation with SDS but I recommend them highly.

Live like you mean it.
Fred


MGBV8
Carl Floyd
Kingsport, TN
(4511 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

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Re: Fuel Injection question
Posted by: MGBV8
Date: June 05, 2015 10:59AM




NCtim
Tim Shumbera
Western North Carolina
(239 posts)

Registered:
01/19/2012 04:35PM

Main British Car:


Re: Fuel Injection question
Posted by: NCtim
Date: June 05, 2015 04:36PM

Thanks, Carl!


NCtim
Tim Shumbera
Western North Carolina
(239 posts)

Registered:
01/19/2012 04:35PM

Main British Car:


Re: Fuel Injection question
Posted by: NCtim
Date: June 05, 2015 04:42PM

Fred and Carl,

At first glance this SDS sytem looks promising. Would it run my 4.0L's GEMS FI and ignition?

Tim


DiDueColpi
Fred Key
West coast - Canada
(1365 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
I really thought that I'd be an action figure by now!

authors avatar
Re: Fuel Injection question
Posted by: DiDueColpi
Date: June 05, 2015 10:16PM

Yep.
The EM5F will do all of that.
But you will not have idle speed control. It will be set manually.
Not a big deal but thought that you should know.


NCtim
Tim Shumbera
Western North Carolina
(239 posts)

Registered:
01/19/2012 04:35PM

Main British Car:


Re: Fuel Injection question
Posted by: NCtim
Date: June 06, 2015 02:25PM

Thanks for your help!


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