MSD 6A(L) ignition on a 4x4 Sapphire Cosworth

**madmaxptt** · 20-06-2023, 23:03

Hi! I own a Ford Sierra/Sapphire Cosworth 4x4 with L8 ECU, I also have an MSD 6AL ignition and I 'd like from you if its possible to send me the correct connection diagram for my car because I cannot understand what to do with my old ignition module (original Cosworh) and the connection of Crankshaft trigger.

**Miniliteman** · 21-06-2023, 10:10

Any help? Page 26 and onwards

-> https://www.mpsracing.com/instructio...ringmanual.pdf

**stevieturbo** · 21-06-2023, 23:20

Are you trying to use this instead of the engine ecu or something ?

Lots of diagrams here...but I'd have to question why ?

https://www.holley.com/products/igni...eet/parts/6425

**madmaxptt** · 22-06-2023, 08:35

I want to use it with L8 ECU, I want to have better spark than Group A coil, I do not want to fit wasted spark.

**katana** · 22-06-2023, 09:17

Seems an antiquated solution when better, more modern & reliable systems are available ie, lose the dizzy, add a crank trigger wheel and sensor together with a nodiz ignition and some COP's and you've got a fully mapable ignition with excellent spark potential for not a lot of coin! And there is NOTHING wrong with wasted spark!

**madmaxptt** · 22-06-2023, 09:35

I already have this kit, I have also programmed my ECU with it but I am having a strange Issue, some times when i Turn on the ignition the engine doesnt start (when the engine is on operating temperature), in the morning I never have this issue

**Miniliteman** · 22-06-2023, 17:30

Originally Posted by madmaxptt

I want to use it with L8 ECU, I want to have better spark than Group A coil, I do not want to fit wasted spark.

Tested the MSD6AL system years ago on the dyno, there was maybe 0.5 bhp difference compared to a normal electronic ignition system. Also, with a capacitive discharge system if the (first) spark doesn't ignite the mixture that's it. On an inductive system the charge energy in the coil gives another spark.

**stevieturbo** · 22-06-2023, 17:48

If you insist you must use this old system

Page 10/26 would seem appropriate.

https://www.holley.com/products/igni...eet/parts/6425

Is the engine at a level where spark with even just a simple coil upgrade is even a problem ?

**stevieturbo** · 22-06-2023, 17:50

If you have a non start scenario, then you need to determine what it is lacking to start ?

What have you tested ? Does it have fuel ? spark ? air ? etc etc

**katana** · 22-06-2023, 20:29

Maybe investigate heat soaking if it occurs when you say?

**madmaxptt** · 24-06-2023, 17:28

The problem is with ignition, it makes a funny noise and the engine doesnt start

**stevieturbo** · 24-06-2023, 17:33

Originally Posted by madmaxptt

The problem is with ignition, it makes a funny noise and the engine doesnt start

That's not an overly technical description or answer to my question.

It's more like the answer a 12 year old would give.

Exactly what ignition setup do you have now ?