Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

> 123ignition to signal ecu?, or do I need a cranck trigger?
barkamatic
post Oct 16 2025, 03:36 PM
Post #1


Newbie
*

Group: Members
Posts: 49
Joined: 6-March 23
From: Colorado
Member No.: 27,211
Region Association: Rocky Mountains



Purchased a 123 ignition for a D-Jet but due to the difficulty of finding D-Jet parts I have decided to go with an aftermarket system. Probably a silly question, but could I use the FI firing triggers from the distributor for a crank position signal? Thanks in advance.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
Reply to this topicStart new topic
Replies
JeffBowlsby
post Oct 16 2025, 08:27 PM
Post #2


914 Wiring Harnesses & Beekeeper
*****

Group: Members
Posts: 9,090
Joined: 7-January 03
From: San Ramon CA
Member No.: 104
Region Association: None



Gotta ask, what djet parts are you missing? Your engine year and size and is it stock or modified?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
barkamatic
post Oct 17 2025, 02:02 PM
Post #3


Newbie
*

Group: Members
Posts: 49
Joined: 6-March 23
From: Colorado
Member No.: 27,211
Region Association: Rocky Mountains



the car is a '73 2.0. Stock. I received the car with some Weber 34's on it Bought a D-Jet system off the internet but it was pretty much all junk. MPS wont hold vacuum at all. Mismatch between ECU and other parts. Decided to go with a free standing unit.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
chmillman
post Oct 17 2025, 03:45 PM
Post #4


Member
**

Group: Members
Posts: 168
Joined: 15-June 24
From: Switzerland
Member No.: 28,183
Region Association: Europe



QUOTE(barkamatic @ Oct 17 2025, 10:02 PM) *

Bought a D-Jet system off the internet but it was pretty much all junk. MPS wont hold vacuum at all. Mismatch between ECU and other parts.


Really not a good idea, I would never buy used D-Jet parts without testing them or having a right to return if they don’t work. Hope you didn’t pay too much for them…

Putting a D-Jet system together from various used and new parts is possible, but a tricky operation with lots of traps to fall into if you don’t know what you’re doing - and it won’t be cheap either.

There are a couple people in here that have put on “modern” EFI systems, there are some posts on that subject.
User is online!Profile CardPM
Go to the top of the page
+Quote Post

Posts in this topic
barkamatic   123ignition to signal ecu?   Oct 16 2025, 03:36 PM
dtmehall   dude; you have left the reservation! keep yo...   Oct 16 2025, 08:17 PM
JeffBowlsby   Gotta ask, what djet parts are you missing? Your ...   Oct 16 2025, 08:27 PM
barkamatic   the car is a '73 2.0. Stock. I received the ca...   Oct 17 2025, 02:02 PM
barkamatic   By the way, I have read pretty much everything you...   Oct 17 2025, 02:05 PM
chmillman   Bought a D-Jet system off the internet but it was...   Oct 17 2025, 03:45 PM
barkamatic   Bought a D-Jet system off the internet but it wa...   Oct 17 2025, 06:22 PM
emerygt350   I think it would be great to document how you do i...   Oct 17 2025, 07:05 PM
barkamatic   I think it would be great to document how you do ...   Oct 17 2025, 08:05 PM
emerygt350   I think it would be great to document how you do...   Oct 17 2025, 08:10 PM
dtmehall   the trigger points on the old D* systems were neve...   Oct 17 2025, 08:48 PM
Superhawk996   Probably a silly question, but could I use the F...   Oct 17 2025, 08:51 PM
barkamatic   Probably a silly question, but could I use the ...   Oct 17 2025, 09:26 PM
Superhawk996   Bottom line: D-jet injectors are bank fired and sh...   Oct 17 2025, 09:47 PM
barkamatic   Bottom line: D-jet injectors are bank fired and s...   Oct 17 2025, 10:23 PM
JeffBowlsby   I have no predisposition about custom aftermarket ...   Oct 18 2025, 01:39 AM
chmillman   I agree 100% with @jeffbowlsby about the downsid...   Oct 18 2025, 03:49 AM
barkamatic   I agree 100% with [b]@[url=http://www.914world.c...   Oct 18 2025, 10:00 AM
JeffBowlsby   With all due respect, evidently our reasons for o...   Oct 18 2025, 10:26 AM
emerygt350   My mustangs tbi could care less about position of ...   Oct 18 2025, 09:42 AM
Superhawk996   My mustangs tbi could care less about position of...   Oct 18 2025, 10:11 AM
barkamatic   My mustangs tbi could care less about position o...   Oct 18 2025, 11:23 AM


Reply to this topicStart new topic
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 19th October 2025 - 12:48 AM
...