924Board.org

[Bockscar]

I was surfing the How-To section when I came across this thread - http://www.924board.org/viewtopic.php?t=27873

It's kind of an old one so I don't really want to dig it up from the dead. I'm currently fighting with ignition system gremlins and after looking through the near-useless Haynes manual about 500 times and seeing how convoluted my ignition system is (im a 81 turbo), this Pertronix ignition system struck me as interesting.

Here's a link to the 'kit' I found - http://www.jegs.com/i/Pertronix/751/1847V/10002/-1?parentProductId=746414 . How could an ignition system consist of a dizzy, coil, this kit, and an 'ignitor'? And if that is the case, why is the Bosch system so complicated? Has anyone else had any luck with these?
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Brian
'79 924 - Restoration In Progress
'81 924 Turbo w/EFI - Scrapped

[ideola]

You could probably get it to work, but on an 81, it would be a downgrade because you would lose the DITC function. You would be better off (IMHO) upgrading to a DIS system, either a stand-alone like Electromotive, or a MegaSquirt-based system that could be setup initially for ignition, and upgraded later for full EFI.
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erstwhile owner of just about every 924 variant ever made

[Bockscar]

[ideola]

You could downgrade to an S1 ignition setup. You would have to figure out some wiring though. I might have a spare CD box and distributor in my parts bin...
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erstwhile owner of just about every 924 variant ever made

[Cedric]

The DITC is not consisting of so many parts, have you tried fixing the problem? What is the problem?

Try fixing it first, I converted my 80 car to a 81engine with DITC, hell lots of cables (they dont have much in common) but the DITC works flawless. Rock solid idle and works great at all temperatures.
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1980 924 Turbo
www.instagram.com/garagecedric/

[Bockscar]

[ideola]

It's possible the crank sensor has gone kaput, which would be bad news, as they are unobtanium even used. Also, the 931 FSM is woefully lacking on any diagnostic information to determine if the sensor is any good.

Double check the pins and the connections at the ignitor, as well as at the big plug on the DITC box itself. I was having tons of problems when I first got GEBLASN (1981 US spec) until I cleaned the terminals at both of these connections (male and female ends both), and it really took care of the problem entirely when I disassembled the big end of the DITC fat connector and gently filed and crimped the female connectors so that they gripped the pins better on the box. I also put two really big fat rubber bands around the connector and box to help keep the connector from jiggling off. My son has been using it as a daily driver and has not had a single problem related to DITC since I did this (well over two years now).
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erstwhile owner of just about every 924 variant ever made

[musicalannette]

Having not seen one or worked on one, this is a quick note back to one of the replies, if the sensor is hall effect (magnet passing by a coil) or if it is inductive pick-up (where a transformer thas one coil with a current passing through it and then the other coil giving out a small voltage change as the magnetic permiability changes when a piece of metal passes), you should be able to monitor this using an osilloscope, the pulse will be small, not there for long and it wont be there when things are not moving passed each other (i.e you must be cranking the engine), but you should be able to pick them up well enough to say there is an output and stop any lack of confidance in the sensor. Any good T.V. repair guy would be able to help you out here if you don't have an osilloscope.They will proabably be more up to speed in this sort of measuring than most auto electricians. Hope this helps.
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I KNEW white wall tyres were invented by Americans .....just not at Boeing.... to be fitted on the 737.....