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Dual point distributor #1705980 12/02/14 05:13 PM 12/02/14 05:13 PM
Joined: Jan 2008 Posts: 83 Michigan, USA S sixpackman OP member
sixpackman OP member S Joined: Jan 2008 Posts: 83 Michigan, USA	Hello, I have a 1970 Cuda 440-6 with a miss in the motor. Put a complete tune-up in it but can't locate the issue. In the distributor does each set of points operate one bank of the motor? It seems like I'm getting twice the spark on the drives bank than the passenger? I have changed, checked, tuned, and replaced everything and nothing. I even used a dwell meter to tune the points. Any help would be GREATLY appreciated.

Re: Dual point distributor [Re: sixpackman] #1705981 12/02/14 05:24 PM 12/02/14 05:24 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Dual points increase the dwell time for all cylinders, they do not control one bank over the other. Your miss may not be ignition related. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: Dual point distributor [Re: sixpackman] #1705982 12/02/14 06:33 PM 12/02/14 06:33 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	misses at idle/part throttle/wot? Describe the miss, what parts/systems have been replaced/checked. When did it start, any changes that immediately preceding it missing? Some times on a toughie I go back to a basic compression test to make sure I ain't got a dead hole. If you ground each plug wire does it slow a bit? rotor radial gap/phasing OK? live every 24 hour block of time like it's your last day on earth

Re: Dual point distributor [Re: sixpackman] #1705983 12/03/14 07:57 PM 12/03/14 07:57 PM
Joined: Sep 2003 Posts: 1,688 Marlboro, NY, USA R Rick_Ehrenberg top fuel
Rick_Ehrenberg top fuel R Joined: Sep 2003 Posts: 1,688 Marlboro, NY, USA	Watch for frayed / broken litz wire conducting the ground current "around" the ball bearing breaker plate. Drive it very long that way, bearing balls get arc-welded. Post a good pix w/ rotor removed. Rick

Re: Dual point distributor [Re: Rick_Ehrenberg] #1705984 12/04/14 03:09 AM 12/04/14 03:09 AM
Joined: Jan 2003 Posts: 15,785 Jefferson State S srt ESYC
srt ESYC S Joined: Jan 2003 Posts: 15,785 Jefferson State	is this a factory 8 lobe shaft dist? some aftermarket have 4 lobes one set of pts for 4 cyls, other for the other 4. did you set dwell by blocking one set of points with a clean business card, set the un-blocked set, then reverse and set the other? Check the leads within the dist for chafing and also the dist cap for arcing/cracks.

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