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Author Topic: Grey motor dwell angle  (Read 2013 times)
Newby13
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« on: January 02, 2023, 07:01:07 PM »
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I am just setting up a grey motor I have rebuilt and was wondering if anyone knows what dwell angle should be on it using the original Bosch Dissy or do I just set the gap and leave it.
Also I am chasing a vacuum advance diaphragm as mine just don't work thanks all.
John Newbound
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ardiesse
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« Reply #1 on: January 02, 2023, 08:27:52 PM »
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36-41 degrees.  But just set the point gap anywhere between 0.012"-0.016".

There's a bloke in Queensland who sells rebuilt vacuum advance units.  He should be Googlable.

Rob
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Newby13
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« Reply #2 on: January 03, 2023, 07:34:45 AM »
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Thanks Rob I'll try to find him
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Newby13
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« Reply #3 on: January 03, 2023, 07:46:57 AM »
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I found that Rare Spares have them for $21 The guy in WA wants over $100 for a rebuild and I have to send him a changeover unit
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ardiesse
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« Reply #4 on: January 17, 2023, 11:53:32 AM »
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. . . except that the Rare Spares units look like they're for red/blue/black motor Bosch distributors.  They won't fit a grey distributor.

Rob
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Newby13
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« Reply #5 on: January 18, 2023, 05:09:14 PM »
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Correct I found that out when I went downto get one, Has anyone tried the AccuSpark eletronic ignition on the bosch dissy I was thinking about putting one of them in or gettine a complete electronic dissy for it, (i know it aint original!!) but does it work?
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ardiesse
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« Reply #6 on: January 18, 2023, 07:58:32 PM »
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Don't know about Accuspark, but I can recommend the Pertronix ignition module, with the following warnings -

Your distributor needs to be in excellent condition (centrifugal advance working, with no wear in the parts; no end float in the shaft; vacuum advance working, and ground braid in good condition) before you install the module.

The magnet sleeve is difficult to install over the distributor cam.

You need to grind a small amount of material off the vacuum advance pull rod anchor bracket to clear the magnet sleeve.

Rob
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