Delco DIS On Non DIS Engine

Converting To Delco ECU From Carby Or Other Injection Systems
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Delco DIS On Non DIS Engine

Postby Apples » Wed May 13, 2009 12:31 pm

OK to go DFI you will need a module 4 cyl = D1927A or 6 cyl = D1928A
as pickup from a GM abs wheel sensor or similar.
make a trigger wheel by copying the picture below.

Diswhl.gif
Diswhl.gif (8.3 KiB) Viewed 10935 times


but you will have to get some commodore coils and wiring plugs to fit the module.
her is one of the required plugs
http://www.diyautotune.com/catalog/wire ... p-359.html

D1927A
http://cgi.ebay.com/ebaymotors/ws/eBayI ... OTORS:1123

D1928A
http://cgi.ebay.com/ebaymotors/ws/eBayI ... OTORS:1123

Wiring to 808

4cyl dis.JPG
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6cyl dis.JPG
6cyl dis.JPG (53.88 KiB) Viewed 10860 times


Hope this helps.

Changed 4 cyl dis picture to correct pin outs
Last edited by Apples on Wed Sep 16, 2009 4:07 pm, edited 5 times in total.
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blah

Postby wake77 » Wed May 13, 2009 8:18 pm

here are some pictures of the setup on the commodore
Attachments
IMGP3776.JPG
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IMGP3775.JPG
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IMGP3773.JPG
IMGP3773.JPG (64.45 KiB) Viewed 10905 times

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Re: 1UZ Toyota Ignition Conversion

Postby wake77 » Wed May 13, 2009 8:23 pm

and some more details
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northstar.rar
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northstar setup.gif
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NordstarCrank.gif
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Delco DIS On None DIS Enigine

Postby Apples » Mon May 18, 2009 10:01 pm

The trigger wheel picture above is more for making one the following one is the way it should be mounted for rotation.
Also more info here http://www.megamanual.com/ms2/GM_DIS.htm

In a 4-cylinder application, the notches DO NOT coincide with TDC, except for the one at TDC for cylinder#1. The sync pulse comes at 70° after TDC for the #1 cylinder.

In a 6-cylinder application, the evenly spaced notches coincide with TDC. The sync pulse notch coincide with 10° after TDC for the #1 cylinder.


dis_ring.gif
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A Hemi 265 balancer made in to the trigger wheel

trigger1.jpg
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Last edited by Apples on Tue May 26, 2009 12:01 pm, edited 2 times in total.
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Re: Delco DIS On Non DIS Enigine

Postby VL400 » Mon Jun 08, 2009 12:20 pm

Started drawing up a crank trigger for a 4cyl DIS (so the 7x crank pickup) and have some queries...

1) Which of the two pictures above is correct, one has a sync pulse before a ref pulse and one after? Apples mentioned the second picture is correct for the rotation, so after?
2) The statement from the megamanual page "In a 4-cylinder application, the notches DO NOT coincide with TDC, except for the one at TDC for cylinder#1. The sync pulse comes at 70° after TDC for the #1 cylinder." seems incorrect. How can some not coincide with TDC? They are 60deg apart and a 4 cyl fires every 180* of crank rotation, so two of them have to coincide with TDC of each cyl. Can anyone confirm the 70* ATDC of #1 for the sync pulse?
3) Am finding conflicting info as the wether the notches are right on TDC or 10* BTDC. I suspected they were 10* BTDC for the cranking spark advanced, but the reference angle for when the engine is running is 60deg not 70deg so that indicates they are right on TDC.

A factory trigger diagram would be most helpful!

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Re: Delco DIS On Non DIS Enigine

Postby Apples » Mon Jun 08, 2009 7:56 pm

I have been unable to get factory info on the dis units I know that the last 4cyl I make two trigger wheels and if I remember correctly set engine up TDC number 1 cyl and set the offset by 70 deg made the trigger wheel spin on the crank shaft held tight by the balancer bolt.
adjusted till I got it to run correctly.
when it ran correctly I then make second trigger wheel bolt to balancer and made pickup mounting position where it fitted engine the best with correct relationship.
I had a look for my notes but can not locate them and unable to locate other things after moving house.
As long as the The sync pulse comes at 70° after TDC for cylinder #1 it should be correct for a 4cyl. sounds correct as per above link.
Please let me know it I am wrong as its been 2 years now from last time I played with it and last time I asked the owner its still going strong.
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Re: Delco DIS On Non DIS Enigine

Postby VL400 » Mon Jun 08, 2009 8:38 pm

Thanks Apples, might try and do the same to get it setup initially. I will be sure to post info up once I get something happening.

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Re: Delco DIS On Non DIS Enigine

Postby antus » Mon Jun 08, 2009 10:30 pm

That top diagram shows on the first pic the center bit is 0.625, and from the other half, thats the back view not the front view. It doesnt show angle of rotation, so I think it actually matches the megasquirt docs when you consider it that way around. I wouldnt expect to the megasquirt docs to be wrong as they would be used on lots of 4 cyl cylinder cars and someone would have surely reported it by now.
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

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Re: Delco DIS On Non DIS Enigine

Postby VL400 » Mon Jun 08, 2009 10:44 pm

Good pickup Antus, I figured that was the reason but did not notice the dimension in the middle. Will be basing my trigger wheel on the megasquirt diagram and info, but making it a 14x wheel instead :think:

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Re: Delco DIS On Non DIS Enigine

Postby Rock_Lobster » Tue Jun 09, 2009 3:53 pm

Don't know if this helps at all, but here's the MOTEC download section :-

http://www.motec.com.au/downloads/downloadsappdrawings/

Go to the "ECU > Combined Module and Trigger" section and select the "DELCO 6 Cylinder DFI (Dual Edge) #S13"

HTH

Wayne
If you can't be a good example, be a horrible warning.

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