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PostPosted: Mon Jan 17, 2022 5:53 pm 
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EFI Slant 6

Joined: Sat Mar 19, 2016 7:25 pm
Posts: 285
Location: SW PA
Car Model:
Looking forward to an update! You're very talented & creative, and You've built a unique & beautiful ride, Thx for sharing the journey! K6


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PostPosted: Sat Jan 29, 2022 3:59 am 
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2 BBL ''SuperSix''

Joined: Sun Mar 01, 2020 6:12 am
Posts: 20
Car Model: Dodge Pioneer 1961
Long time since last post! I have started the EFI-conversion recently. This is all new to me, although I do know the basics.
I removed ALL the original wiring harness from the car. It's intact but being over 60 years old, it's probably better be safe than sorry.
Also going to add a decent fuse box and some relays, as there is none in the original system.
This way I can make a custom EFI integrated harness and make it at least look simpler.

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Here is the MaxxECU Street Premium package. It came with wiring harness for all the sensors and injectors. Also included was a wideband sensor.
ECU has a built in MAP sensor up to 3 bar / 43,5 PSI of boost.


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This is all the wiring needed from the factory. Car had probably zero options, so not too much wiring here

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I converted the distributor to give home signal for the ECU.
Removed all the weights and welded a DIY trigger wheel to the shaft. Cut the cap in half and epoxied some pc-sheet for cover.
Later I was informed that it would have worked with single tooth trigger also.

Going with HALL-sensors, home and trigger.

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I'm not sure what I'm going to achieve with this, probably some weird looking setup.
I butchered the DCOE, plugged all the unneeded holes and added a TPS-sensor.
This should, in theory work as a throttle body now.


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Injectors are 304cc @ 3 bar, Bosch type short models. There is not much room for the injectors,
because the way I have put the supercharger.
Some weld on bungs and 36-1 trigger wheel came recently.


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Mocking up the bungs with DIY fuel rail and some 14mm pipe turned as injector templates.

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This is where I'm now with the project. Injector bungs are welded on in 45 deg. angle and some cleaning and painting to do

Next I'm going to tackle the trigger wheel and bracket for the trigger sensor.

Thanks for your comments!


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PostPosted: Sat Jan 29, 2022 5:17 am 
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Board Sponsor & Moderator
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Joined: Mon Oct 21, 2002 11:08 am
Posts: 15362
Location: Blacksburg, VA
Car Model:
Very cool progress! I bet, after quite a bit of creative work, you will enjoy driving the car much more.

Lou

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"You mean you still have a Slant 6 in that thing?"


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PostPosted: Sat Jan 29, 2022 7:12 am 
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Joined: Thu Oct 17, 2002 7:27 pm
Posts: 13329
Location: Park Forest, Illinoisy
Car Model: 68 Valiant
Very impressive work! Thanks for updating us.

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PostPosted: Tue Apr 05, 2022 9:01 am 
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2 BBL ''SuperSix''

Joined: Sun Mar 01, 2020 6:12 am
Posts: 20
Car Model: Dodge Pioneer 1961
Long time since last post, so I try to fast forward here with a slant six horror picture show.

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Injector bungs welded and sanded down. Painted with Chrysler Turquoise.

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Hall sensor bracket here. Someone said that it needs to be stury enough for lift the engine

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Manifold installed with injectors and fuel rail

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IAT sensor tapped to blower adapter

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CLT sensor installed to head. Not sure if this is the best location for it

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A bunch of colorful spaghetti

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Colorful spaghetti rear chassis harness

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Colorful spaghetti front chassis harness

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Colorf... You get the idea... Dash harness

All electrics are now fuse protected.

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Idle air bypass connection

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Relocated the hidden extra gauges and installed the ECU behind the radio hole.

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LS2 Truck coils fitted here. All coils can removed with as a unit by removing two screws

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Engine harness coming together here.

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Fuel regulator and some PTFE fuel lines with AN fittings

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Walbro pump installed inside the tank.

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Fitted electric fan behind the radiator

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Some silly pic with harness installed

After everything was mocked up I tried to start the car, but had no spark.
I found out that there was a minor error with the harness and coils had no ground.
After fixing that, it started right away. First runs were just a few seconds, but after tweeking around the tune I got it running decently.


Current status seen here in couple of videos, if you are interested...

Running engine. IAC seen here is a BMW M50/52 style.
https://www.youtube.com/watch?v=sFSK9vahQCQ

Testing gears and did my first ever fuel mapping.
https://www.youtube.com/watch?v=rHAlcaLcMhw

Stop and start testing. Could fire up faster with more modern starter.
https://www.youtube.com/watch?v=9ycfUkY0O1w

This is my first ever EFI build and after a long time the first start reminded me about the reasons why we wrench cars.

Now I have a bunch of things to do around the car before first roadtests,
besides it still snowing here in Finland..


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PostPosted: Tue Apr 05, 2022 2:07 pm 
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Supercharged

Joined: Wed Sep 17, 2008 6:48 pm
Posts: 3564
Location: Indianapolis
Car Model:
Nice, tuning a FI motor can be very satisfying.
What are you using for a throttle body?

_________________
Doo Ron Ron and the Duke of Earl are friends of mine.....
https://www.youtube.com/watch?v=uX8Nj8ABEI8


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PostPosted: Tue Apr 05, 2022 7:42 pm 
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2 BBL ''SuperSix''

Joined: Sun Mar 01, 2020 6:12 am
Posts: 20
Car Model: Dodge Pioneer 1961
DadTruck wrote:
Nice, tuning a FI motor can be very satisfying.
What are you using for a throttle body?


Markus-FIN wrote:
Image
I'm not sure what I'm going to achieve with this, probably some weird looking setup.
I butchered the DCOE, plugged all the unneeded holes and added a TPS-sensor.
This should, in theory work as a throttle body now.




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PostPosted: Wed Apr 06, 2022 3:51 am 
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Board Sponsor & Moderator
User avatar

Joined: Mon Oct 21, 2002 11:08 am
Posts: 15362
Location: Blacksburg, VA
Car Model:
Very nice work, Markus! Thanks for sharing with us. Best of luck tuning. It should be FAR FAR easier than with a carb.

I just did similar things to my 3X2 DCOE setup for individual runner TBs. That engine will be NA. Well, I admit I had someone do most of the mods...

Lou

_________________
"You mean you still have a Slant 6 in that thing?"


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PostPosted: Sun Apr 10, 2022 10:18 pm 
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Supercharged

Joined: Wed Sep 17, 2008 6:48 pm
Posts: 3564
Location: Indianapolis
Car Model:
And the TB does look like a carb body, that is why I was asking.
Is it starting OK without the enrichment port that is normally on a TB?

And as said by many others, outstanding achievement on your project.
Thanks for posting.

_________________
Doo Ron Ron and the Duke of Earl are friends of mine.....
https://www.youtube.com/watch?v=uX8Nj8ABEI8


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