"Home-Brewed" Coil Near Plug Conversion Mock Up....

["Dart67"]

As the title says, this is the start of my "Home-Brewed" Coil Near Plug Conversion.

To start, although this has nothing to do with the conversion, I made a bracket to mount the IAT Sensor to the throttle body. I have had it mounted in the air cleaner base. It was a pain to disconnect and reconnect when removing the air cleaner base. Now it will be an issue.

Here is a view looking down on the LS coils. I have 2 groups of 4 coils mounted on both sides of a thin steel plate. One coil "pack" for the drivers side and one coil pack for the passenger side. Also in this photo you can see how I have mounted the MAP sensor to the left rear of the throttle body. The AN-8 fuel line will come under the intake and connect to rear fuel rail.

Here is a side view of the drivers side coil pack.

Here is a side view of the passenger side coil pack.

Here is the rear view showing the fuel pressure sensor in the rear fuel rail as well as the oil pressure sensor, oil pressure sending unit for the dash gauge, and pressure gauge.
If you look close, you can see the coil pack connectors and injector connector under the coil mounting bracket I made.

All of the other sensor wiring for the IAT, MAP, IAC, Oil and Fuel pressure, Throttle Position, Cam Position two Temperature, and Crank Position will come through the firewall directly behind the center of the coils and about the same level as the intake pan.

It will be a while before this project is finished and running...I hope.....due to the fact that I will be doing a rebuild of the 440/512.

Everything is slowed down due to the extreme heat and humidity here and only being able to work for 2 or 3 hours a day.


Herb aka "Dart67"

 

[Bewy]

Be sure to increase the plug gap to gain maximum benefit for Coil Near Plug.

 

[Ottmundr]

Just curious, why do you have the coilpacks there, rather on the valve covers so you would have shorter wires and no chance of crossing any wires?
Did you mount them at the rear for aesthetic reasons, or for easier access to remove the valve covers, or something else I haven't thought of?
I know I'm probably going to want to show off my M/T valve covers, but I also want to keep the plug wires as short as possible.
Now you got me thinking... I wonder if anyone makes a coilpack that will fit right on the plug with my Promaxx heads and Doug's headers...
I'm going to have to mock it up when I get my engine in the car.

 

["Dart67"]

Just curious, why do you have the coilpacks there, rather on the valve covers so you would have shorter wires and no chance of crossing any wires?
Did you mount them at the rear for aesthetic reasons, or for easier access to remove the valve covers, or something else I haven't thought of?
I know I'm probably going to want to show off my M/T valve covers, but I also want to keep the plug wires as short as possible.
Now you got me thinking... I wonder if anyone makes a coilpack that will fit right on the plug with my Promaxx heads and Doug's headers...
I'm going to have to mock it up when I get my engine in the car.

View attachment 1716430937

I absolutely hate the way coil packs look on valve covers... But, the Main reason is that with the 2" TTI headers on a RB block, there is only about a 1/4" clearance between the number 2 tube and the inner fender panel... No room for the plug wire to go straight from the coil pack to the sparl plug...

Also I like to "hide" as much as I can for the aesthetics and a clean engine bay.

Here is a photo of the right side header clearance....

 

["Dart67"]

A few more photos of the manifold and coil pack bracket..

The coil packs mount on a 1/4" x 20 all thread rod...

By the way, this manifold started out as an Edelbrock Torquer 440 back in 2003. Way before any direct port EFI intakes were available for MOPAR RB engines.

I "Home-Brewed" this manifold by drilling, making my own weld in injector bungs and a jig to hold the bungs in position while welding.

Once the bungs were in place, I used my Miller spoolgun and build the pads up to look like a cast manifold. All the fuel rails started out as a long piece of bulk rail. I cut, step drilled for the injectors and threaded for AN fittings.

This fuel system is what lead to my car being the centerfold article "Home-Brewed" in the October 2006 MOPAR Action magazine.

The name "Home-Brewed" came about because of my lastname "Beer" , the SixPack hood and the fact that I made everything myself. Including building a MegaSquirt ECU from a kit...

Anyway.....

Here is a top view of how the coil packs are mounted with the fuel rail removed for a better view.

Here is the bracket and coil pack mounting studs...

And, here is the modified manifold for the bracket mounting...