Fitting Crane Hi-6 ignition system to &5/Milano V6 - Alfa Romeo Bulletin Board & Forums

 
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post #1 of 9 (permalink) Old 11-21-2016, 04:24 PM Thread Starter
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Fitting Crane Hi-6 ignition system to &5/Milano V6

Has anyone here fitted a Crane Hi-6 ignition system to a V6 75/Milano with the L-jet EFI? If so, how did you wire it up? Did you have to fit the tachometer adapter transformer thingy? Did it make any difference to the performance and operation of the car? I am thinking about fitting one to our 3 litre 75. I have my eye on a second hand Hi-6RL unit.

Current Alfas
2004 GT 3.2 V6 (Stromboli Grey).
2008 159 TI Sportwagon 2.4 JTDM (Stromboli Grey).
1987 75 3 litre (red). My first 75 and now my son's.
!989 75 3 litre (black). Shared project with my son.
2000 156 2 litre Twin Spark, ( Cosmos Blu metallic), my daughter's car.

Past Alfas
1990 75 3 litre Potenziata (black), now sold & living in Newcastle NSW.
1990 75 3 litre Potenziata (grey, sadly deceased due to fire).
1982 GTV 2 litre, red, (daughter's first Alfa)
2 x 1992 164s, (1 red, 1 grey).
2 x 1988 33s, (both red).
1985 GTV 2 litre, (white).
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post #2 of 9 (permalink) Old 11-21-2016, 05:45 PM
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I have a Crane HI-6 on my 3L GTV6 that uses Megasquirt. It made a big difference above 6000 rpm. I intercepted the wire that goes from the ignition module to the coil. The ignition module now feeds the Crane and the Crane feeds the coil. I did not need a tach adapter. I mounted the Crane unit under the parcel shelf. Crane recommends that you don't install it in the engine bay.

Ed Prytherch
79 Spider
85 GTV6 3L
76 Suzuki GT500

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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post #3 of 9 (permalink) Old 11-21-2016, 05:53 PM Thread Starter
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Thanks. Did it help with starting and mid range performance at all? I guess you didn't need the tach adapter due to having Megasquirt fitted.

Current Alfas
2004 GT 3.2 V6 (Stromboli Grey).
2008 159 TI Sportwagon 2.4 JTDM (Stromboli Grey).
1987 75 3 litre (red). My first 75 and now my son's.
!989 75 3 litre (black). Shared project with my son.
2000 156 2 litre Twin Spark, ( Cosmos Blu metallic), my daughter's car.

Past Alfas
1990 75 3 litre Potenziata (black), now sold & living in Newcastle NSW.
1990 75 3 litre Potenziata (grey, sadly deceased due to fire).
1982 GTV 2 litre, red, (daughter's first Alfa)
2 x 1992 164s, (1 red, 1 grey).
2 x 1988 33s, (both red).
1985 GTV 2 litre, (white).
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post #4 of 9 (permalink) Old 11-21-2016, 07:31 PM
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Megasquirt replaces the advance computer and sends the fire pulses to the ignition module. The Crane is wired in after the ignition module and I think that the L-jet implementation is the same from a tach signal perspective. Pin 7 of the ignition module is a tach output and I may have used that. I cannot remember if the Crane has a separate tach output signal.

I installed the Crane specifically to improve the high rpm performance. The stock ignition worked fine below about 5500 rpm.

Ed Prytherch
79 Spider
85 GTV6 3L
76 Suzuki GT500

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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post #5 of 9 (permalink) Old 11-22-2016, 08:47 AM
Richard Jemison
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Tach output

Quote:
I cannot remember if the Crane has a separate tach output signal.
It does. Most likely the green wire from memory.

Richard Jemison
RJR Racing

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post #6 of 9 (permalink) Old 11-22-2016, 04:38 PM Thread Starter
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Quote:
Originally Posted by Alfar7 View Post
It does. Most likely the green wire from memory.
Don't you need an adapter transformer for it to work with the L-jet though?

Current Alfas
2004 GT 3.2 V6 (Stromboli Grey).
2008 159 TI Sportwagon 2.4 JTDM (Stromboli Grey).
1987 75 3 litre (red). My first 75 and now my son's.
!989 75 3 litre (black). Shared project with my son.
2000 156 2 litre Twin Spark, ( Cosmos Blu metallic), my daughter's car.

Past Alfas
1990 75 3 litre Potenziata (black), now sold & living in Newcastle NSW.
1990 75 3 litre Potenziata (grey, sadly deceased due to fire).
1982 GTV 2 litre, red, (daughter's first Alfa)
2 x 1992 164s, (1 red, 1 grey).
2 x 1988 33s, (both red).
1985 GTV 2 litre, (white).
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post #7 of 9 (permalink) Old 11-22-2016, 06:13 PM
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I explained it in post #2. Where do you think that you have to wire an adapter?
You would probably need one if you tried to run both the Crane and the tachometer from the same output of the ignition module, but you should run your tach from either pin 7 of the ignition module or the tach output from the Crane.

Ed Prytherch
79 Spider
85 GTV6 3L
76 Suzuki GT500

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke

Last edited by alfaparticle; 11-22-2016 at 06:21 PM.
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post #8 of 9 (permalink) Old 11-22-2016, 07:00 PM Thread Starter
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I'm just going by this from the Crane catalogue and something one of my Alfa mechanics said to me some time ago:
HI-6 Tach Adapter For Module Trigger Applications
Required for some 1981-1995 non-OBD II applications triggering the HI-6 from the
stock electronic ignition module. Connects to trigger input on HI-6 and feeds high
voltage pulse required for tachometer and fuel injection operation back into the stock
engine control system.
Part No. 6000-8910

Current Alfas
2004 GT 3.2 V6 (Stromboli Grey).
2008 159 TI Sportwagon 2.4 JTDM (Stromboli Grey).
1987 75 3 litre (red). My first 75 and now my son's.
!989 75 3 litre (black). Shared project with my son.
2000 156 2 litre Twin Spark, ( Cosmos Blu metallic), my daughter's car.

Past Alfas
1990 75 3 litre Potenziata (black), now sold & living in Newcastle NSW.
1990 75 3 litre Potenziata (grey, sadly deceased due to fire).
1982 GTV 2 litre, red, (daughter's first Alfa)
2 x 1992 164s, (1 red, 1 grey).
2 x 1988 33s, (both red).
1985 GTV 2 litre, (white).
oz3litre is offline  
post #9 of 9 (permalink) Old 11-22-2016, 07:31 PM
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Go for it!

Ed Prytherch
79 Spider
85 GTV6 3L
76 Suzuki GT500

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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