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bluewhitecoopers1968
 Post subject: Spark plug gap
PostPosted: Tue Jun 23, 2015 2:38 pm 
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998cc
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Joined: Mon Mar 07, 2011 3:29 pm
Posts: 616
Location: Close to Maitland NSW
Hi all, I normally just use the plugs straight out of the box. What gap should I be using with the following set up.
Bp7es. Nissan dizzy, 1340cc 45 Dellorto, 10.5 comp. Big valve S head ported. 286i gr cam. Cheers, Richard.
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gtogreen1969
 Post subject: Re: Spark plug gap
PostPosted: Tue Jun 23, 2015 2:49 pm 
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1275cc
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Joined: Fri May 02, 2008 3:07 pm
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30 - 35 thou for high voltage electronic ignition. I have a similar engine to yours and run 32 thou.
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bluewhitecoopers1968
 Post subject: Re: Spark plug gap
PostPosted: Tue Jun 23, 2015 3:12 pm 
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998cc
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Joined: Mon Mar 07, 2011 3:29 pm
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Location: Close to Maitland NSW
gtogreen1969 wrote:
30 - 35 thou for high voltage electronic ignition. I have a similar engine to yours and run 32 thou.

Funny my plugs are pretty close to that out of the box. Cheers.
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drmini in aust
 Post subject: Re: Spark plug gap
PostPosted: Tue Jun 23, 2015 4:31 pm 
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Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39754
Location: near Baulkham Hills, NSW
30-35 is fine, I found when I ran the Pulsar that I got a misfire during warmup if set bigger.
I now run mine at .030" (locked 43D dizzy, Powerspark module + Accuspark black box)

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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bluewhitecoopers1968
 Post subject: Re: Spark plug gap
PostPosted: Tue Jun 23, 2015 4:37 pm 
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998cc
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Joined: Mon Mar 07, 2011 3:29 pm
Posts: 616
Location: Close to Maitland NSW
drmini in aust wrote:
30-35 is fine, I found when I ran the Pulsar that I got a misfire during warmup if set bigger.
I now run mine at .030" (locked 43D dizzy, Powerspark module + Accuspark black box)

Cheers Doc.
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