Microsquirting my car

HarryLui

Golden Member
Aug 31, 2001
1,518
33
91
I have a 1985 Dodge Omni GLH, it made 290WHP couple years ago. I was experiencing electrical issue with my car and decided it isn't worth my time to troubleshoot the issues, since there is only two possibilities, computers or wiring, none is available new. Wanting to keep the car, aftermarket ECU is the only option and Megasquirt / Microsqurit sounded so good.

For simplicity sake I went with batch firing injectors and waste spark ignition system, so the compact\slightly cheaper Microsquirt would work fine for me. I will only need one crank sensor and a 36-1 wheel welded to my crank.

So, the my Microssquirt input/outputs are the following.

Inputs are:
crank/hall sensor
coolant temperature sensor
air temperature sensor
throttle position sensor
ethanol sensor
o2 sensor
manifold absolute pressure sensor
knock sensor
a/c sense wire


Outputs are:
idle control
tachometer
two set of Ignition coil
two set of injectors
a/c cut off relay wire
fan relay wire
fuel pump relay wire

Megasquirt has more options I'm sure, but I don't need them, why pay for them?

I have around $1000 into parts easy, Microsquirt ecu, 8 ft harness, E85 sensor, 36-1 wheel, crank sensor, uninsulated butt crimps connectors, heat shrink, crimping tool, relays, fuel boxes, fuses, E85 quick connectors, QuadSpark Ignition Module, 420a coil, 420a plugs wires, misc wires, sensors connectors, injector resistors, welding 36-1 to my crank, sheet metal screws, tuner studio, and etc.


Separating engine harness with body harness.




Mounted.


All needed wires labeled.


Made bracket for crank sensor, using metal from the shifter bracket on top of the transmission. Will have to reinforce the bracket after the crank is welded to 36-1 wheel.




Marked where the 36-1 wheel needed to be welded to the crank pulley.


Need to find someone to cut the ring gear and weld to the crank pulley.
 
Last edited:

thedarkwolf

Diamond Member
Oct 13, 1999
9,024
118
106
Nice. I've been out of the Turbo Dodge scene for awhile. Is this getting fairly common?
 

JCH13

Diamond Member
Sep 14, 2010
4,981
66
91
Images all failed...

But I am looking forward to a MS build! I've used the microsquirt before, here to help if you need it!
 

HarryLui

Golden Member
Aug 31, 2001
1,518
33
91
Images all failed...

But I am looking forward to a MS build! I've used the microsquirt before, here to help if you need it!

Pictures seem to work fine here.

Thanks. I think I'm good for now. Still a little confused how quadspark works with microsquirt, but I'm sure it will make more sense if I read the manual a few more times.
 

JCH13

Diamond Member
Sep 14, 2010
4,981
66
91
Pictures seem to work fine here.

Thanks. I think I'm good for now. Still a little confused how quadspark works with microsquirt, but I'm sure it will make more sense if I read the manual a few more times.

Ah, images are blocked by my company's firewall.
 

HarryLui

Golden Member
Aug 31, 2001
1,518
33
91
Had to design a beefier new crank sensor bracket. Cleaned up most of the wires.





Engine bay good to go.


Injector resister, on/off idle solenoid


E85 sensor


Boost control solenoid and PCV blowby solenoid (opens at 0psi)


Fuseblocks and PC680 battery


 

drnickriviera

Platinum Member
Jan 30, 2001
2,443
250
136
Looks great. Bruce and Al have come a long way. I was on the megasquirt mailing list when they first started and I was trying to learn more about the Motorola 68HC11
 
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