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Refurbishing the Bosch HEI distributor


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#26 _torbirdie_

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Posted 15 February 2010 - 10:30 PM

OK, Good to know that if you could not afford the extra expense of a coil and plugs to match,
that simply installing the dizzy would work.

However, I still think you would run into trouble sooner or later with a dodgy ballast wire or
faulty old wiring, underpowering a module that was designed for 12-14volts.
I'll go with recommending the full upgrade for reliability.


If you leave the original ballast wire in there, yes it will work, as the electronic module is designed to work in the extreme situations where only 6V might appear at the coil when starting with a near dead battery
Do also appreciate that the electronic dizzy will cause a higher current load on the resistor wire and hence actually reduce the voltage at the end of the resistor wire to lower than when operated with a set of points.
Part of using the hei coil and spark leads is being able to take advantage of setting a larger plug gap with will require the coil to maintain a higher spark voltage. At higher rpm the conventional coil will struggle, especially with the reduced voltage supply.

#27 TerrA LX

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Posted 08 March 2010 - 11:14 PM

TTT

#28 lcv871

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Posted 20 March 2010 - 01:57 PM

i was just wondering how hot the coil should run i touched it last night after it was idling in the shed for about 10 - 15 minutes and was to hot to touch.
it is electronic dizzy, and coil

#29 TerrA LX

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Posted 13 May 2010 - 11:34 PM

Still can't believe this ain't a sticky,
After receiving a PM today,
In regards to power supply, when running the correct coil make sure you have at least 11V plus at the + side of the coil both cranking and running.
Also you need a coil with a primary resistance between terminals + (15) and - (1) = 0.5 - 0.7 ohms at 25degC
and
secondary between terminal - (1) and HT coil lead connection (4) = 5 - 7 Kilohms to gain the best performance, less, especially on the primary will lead to a weak spark that you will never tune out.

#30 nzstato

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Posted 03 November 2010 - 06:26 AM

With Fuzzypumpers' permission I have made a series of videos based on "Refurbishing the Holden Bosch HEI", sorry they're a bit long winded but here you go

Part1

Part2

Part3

#31 _torbirdie_

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Posted 03 November 2010 - 03:49 PM

With Fuzzypumpers' permission I have made a series of videos based on "Refurbishing the Holden Bosch HEI", sorry they're a bit long winded but here you go

Part1

Part2

Part3

Well done, luv the "axcint"

#32 woosha

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Posted 11 April 2013 - 12:23 PM

G'day havin problems downloading the repair link. As I'm in tec doing apprentaship cert 3 in auto electrical and found this would be very usefull. Have told the instructor and seems it would be very usefull to have as a hard copy document, but he is also havin problems getting it.

Any help would be great.

Cheers woosha

#33 woosha

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Posted 11 April 2013 - 06:20 PM

Sorted! Good info on here.

Cheers

#34 double_d

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Posted 19 August 2013 - 06:46 PM

im also having trouble downloading it

is there any chance it could be hosted on this site ?



#35 YELLAcakeu308

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Posted 10 October 2013 - 08:51 PM

NZstato, have you got a part/number for that smaller red dizzy cap with the male terminals thats featured in your video?

#36 YELLAcakeu308

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Posted 18 October 2013 - 09:33 AM

sorry i am also unable to open this sticky file (tried a couple of computers)
when testing the module, what reading should i be seeing in the pic below?

Attached Files



#37 S pack

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Posted 18 October 2013 - 05:21 PM

Module test is for amps not ohms.

 

Install diizzy in engine and wire it all up.

Now place an amp meter in series with the (-) wiring connector on the ignition coil to terminal 16 on the module. Turn on the ignition but do not start the engine. Amp meter should read 0 (no current flow). If reading is not 0 (zero) turn off ignition immediately and replace the module.



#38 YELLAcakeu308

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Posted 18 October 2013 - 06:58 PM

thanks s pack, il give a go tommorow.
In nzstatos youtube vid i thought he was testing for resistance with the module removed...

#39 S pack

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Posted 18 October 2013 - 07:07 PM

He may well have been testing for ohms, however the Holden workshop manual gives the amps test to check the module.

 

I assume the amps test is a more accurate indicator of the control modules condition.



#40 YELLAcakeu308

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Posted 19 October 2013 - 07:08 PM

silly guestion s pack, on my module the a green wire connects the terminal numbered 16 goes to the negative side of the coil...
I tested for amps like you said & it showed zero...
Turned it over to check for spark, stil nothing

#41 Mort

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Posted 08 July 2014 - 12:31 PM

Does someone have the PDF that they can upload to GMH, i tried the link that Fuzzy put up on the first page but can't download it on my iMac.



#42 Stevie1488

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Posted 16 January 2018 - 02:05 PM

Can anyone tell me where to buy new shims and fibre washers?

#43 purrlx

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Posted 16 January 2018 - 03:09 PM

Bought some off ebay for brothers delco dissy (grey motor) a few months back. 6 shims various sizes less than 10 bucks.



#44 fuzzypumper

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Posted 16 January 2018 - 05:23 PM

I usually get them from the local autoelec or scorcher ignitions who are local to me. Im sure ebay would be cheaper.




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