Thread: Ignition component woes

If you know how to rip out a Dizzy ...

Then you should be able to inspect it on the bench ...

All you have to do is check it for play in the shaft (worn bush) and have a very close look at the "Air gap" between the Star rotor and the pickup .. as seen through the clear top protective cap

What sort of coil are you using?
Have you checked voltage to the coil? ... Is it measuring the same as the battery ... or is lower than the battery? ...
Does the alternator globe on the dash give off a slight glow at night?

Have you considered changing the rotor ...


Mike

G'day Rangie85

When I first got my 1/85 Rangie with Elect Ign it suffered from a massive 'flat spot" as in hesitation on pick up, it had an aftermarket coil on it that was tracking across the terminals,(have a look under the bonnet at njght in the dark and you will see the sparks) I then replaced it with a Bosch GT40R and it did not improve, but the coil got VERY hot, when checking with a Landrover tech iI was informed that the coil was possibly putting out TO MUCH voltage and to return to the original Lucas coil, I did and problem solved, it appears that the module unit was trying to compensate for the excess voltage I hope that is of some help, BTW mine is timed at 8deg Before Top Dead Centre.


cheers

If your coil is getting hot then it is not the right one for your system. I have been told the best Bosch coil to use with the standard amp is a BOSCH BIC290 coil. I have not tried it yet, so I can't comment.

The pick-up air gap is critical for reliable low speed operation, check that it is as small as possible while allowing free rotation. Using a multi meter check that there is no loose connection in the pick-up wiring, sometimes a dirty terminal will cause your kind of problem.

I personally refuse to use a Lucas amp any more, I have developed a replacement Bosch amp and coil conversion which has been very reliable. Some of the forum members have now done similar. I have posted it at : Lucas ignition amplifier replacement by Bosch 024

You can also use the Australian Bosch amp module from an early '80s Mitsubishi Sigma.

Originally Posted by wlb

You can also use the Australian Bosch amp module from an early '80s Mitsubishi Sigma.

Yep, the same module is found on WB VC VH Holdens, XD-XF Falcon, carby Sigmas and Magnas, AE82 Corollas, and some Nissans I believe. Many oz released cars around '80 to '86 used a Bosch dissy with this module.

Had a very similar problem with my 87. Replaced coil, amplifier, and pick up in the distributor and still nothing.
use to start if I jiggled the two wires from the pickup but finally ran out of luck. At the end of the day the new pickup I had replaced in the dizzy was faulty of course that was the first thing I replaced and when that didn't fix the problem ended up replacing everything else until I was back to where I started. Funning thing was if you spun the dizzy with it out of the block it would create a spark but back in the block it was always dead.
Check for a spark with the dizzy out of the block and see if it sparks . If it does then I bet your pickup is stuffed.
Good luck