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electronic dizzy which is best buy
https://www.ausmini.com/forums/viewtopic.php?f=2&t=30544		 Page 1 of 1
Author:  bulla [ Mon Apr 16, 2007 1:15 am ]
Post subject:  electronic dizzy which is best buy
my old points distributor seems to have a dwell period of around 80 degrees it should be 60degres there about i changed points and doesnt correct problem also even if i make contact breaker gap larger or smaller it makes no difference to dwell angle i suspect my shaft is bent were it contacts rubbing block maybe some one has an idea should i go electronic for more reliability please help sick mini also has slight hiccup miss at idle wondering if related possibly.
Author:  1310/71 [ Mon Apr 16, 2007 7:44 am ]
Post subject: 
HibullamyrecollectionisthatapulsardizzyisbestuseaDR83ifyouhavean1100orsmallerDR85if1275orbiggeramodificationtothe internalsisrecommendedtoincreaselubricationtheyoriginallycamedifferentonthemanualandauto
Author:  drmini in aust [ Mon Apr 16, 2007 7:59 am ]
Post subject: 
1310/71 wrote:
HibullamyrecollectionisthatapulsardizzyisbestuseaDR83ifyouhavean1100orsmallerDR85if1275orbiggeramodificationtothe internalsisrecommendedtoincreaselubricationtheyoriginallycamedifferentonthemanualandauto

My experience now after stripping dozens is all the Pulsars were grease lubricated when in the Nissan motor- and if buying one there is buggerall difference in advance between a D4R83 and a D4R85. Either works OK. Both need the advance stops modified to restrict advance to 10* in the dizzy.
See the 2 sticky threads in the Mods forum.

Alternative is stick a Pertronix ignitor in your Lucas dizzy, they do work well. :wink:
Author:  slinkey inc [ Mon Apr 16, 2007 12:34 pm ]
Post subject: 
I've found, a Pulsar Dizzy will do a natural aspirated car fine, infact really well, as long as it is set to a max or elss than 10 degrees before top dead centre below 1000rpm.

Although I have found they aren't quite so good with boost (superchargers or turbos) due to the more energy required for the spark to arc across the plug gap, a smaller plug gap and higher voltage coil seem to cure this.

In conclusion the Pulsar dizzy (I use the D4R85) is good cheap upgrade to any mini. Give you a good quality dizzy (not so old so better chance of not being warn out) better spark time, better everything. Of course you can spend ~$170 and get a petronix to then find out you need to re-condition your old dizzy, or spend ~$50 and get a good Pulsar dizzy.
Author:  drmini in aust [ Mon Apr 16, 2007 12:53 pm ]
Post subject: 
If you use a Pulsar dizzy, grab the Pulsar coil too, or go buy a Bosch GT40-R. The Pulsar dizzy runs a 1.5 ohm coil (without ballast resistor), not a 12V 3 ohm (Mini) one. They will work with a 3 ohm coil but output voltage is lower.
With a 1.5 ohm one, I can run up to .040" plug gap with new plugs. In practice I set them to .035". Plug leads are Bosch. My C/R is 10.7:1. :wink:
Author:  slinkey inc [ Mon Apr 16, 2007 3:29 pm ]
Post subject: 
Well I am using a stock Bocsh coil from the pulsar that it came from.

It seems to work good but I've been told (be a reliable source) that I may need to upgrade to a better coil to keep up with a boosted car running somewhere in the 8:1 compression, about 8.8 I think.
Author:  drmini in aust [ Mon Apr 16, 2007 3:34 pm ]
Post subject: 
Make sure your plug and coil H/T leads are good. I used to use Top Guns but found they increased resistance after a couple of years.
When they get to 4K ohms, I'd chuck em.
I now use $5 ea Bosch ones from Supercrap, been in 4 years and still good, at around 1.8K ohm. 8)
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