FE-FC Holden Discussion Forum

Technical Board => General Technical => Topic started by: Newby13 on January 02, 2023, 07:01:07 PM



Title: Grey motor dwell angle
Post by: Newby13 on January 02, 2023, 07:01:07 PM
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


Title: Re: Grey motor dwell angle
Post by: ardiesse on January 02, 2023, 08:27:52 PM
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


Title: Re: Grey motor dwell angle
Post by: Newby13 on January 03, 2023, 07:34:45 AM
Thanks Rob I'll try to find him


Title: Re: Grey motor dwell angle
Post by: Newby13 on January 03, 2023, 07:46:57 AM
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


Title: Re: Grey motor dwell angle
Post by: ardiesse on January 17, 2023, 11:53:32 AM
. . . 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


Title: Re: Grey motor dwell angle
Post by: Newby13 on January 18, 2023, 05:09:14 PM
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?


Title: Re: Grey motor dwell angle
Post by: ardiesse on January 18, 2023, 07:58:32 PM
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