New Design Duraspark Ignition Module?

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Jun 17, 2013 | 06:32 AM

#16

Franklin2

Moderator

Joined: Jan 2001

Posts: 57,027

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From: Virginia

Quote:

Originally Posted by Old81F100Brown

I take it there is no reason to ever convert from a Duraspark II to a Duraspark III system?

Duraspark III took over more of the timing control and was a stop gap system between the old mechanical timing control of the duraspark II and the fullly integrated control of the TFI system.

Quote:

I am going to try opening up my plugs by .005 and see if they run better that way. That is the advantage to running Duraspark II is being able to get a wider Sparkplug gap thus burning more fuel for energy instead of burning it in the Catalytic Converter right? Due to the extra spark produced by the Duraspark II?

No. The main advantage is less maintenance since it doesn't have mechanical points. The dwell remains constant due to no points and rubbing block wear. The duraspark II coil may be a little hotter than the points coil, but not much.

Jun 17, 2013 | 08:19 AM

#17

fmc400

MSEE

Joined: Apr 2004

Posts: 10,386

Likes: 35

From: Austin, TX

Plug gap is simply a function of nominal secondary voltage - the plugs have to be gapped according to what the system generates. Duraspark II specifies a wider plug gap than points because the coil produces a higher secondary voltage due to a higher-output coil, as well as longer, more consistent dwell.