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gaping the plugs with MSD #1521708
10/22/13 09:28 PM
10/22/13 09:28 PM
Joined: Jul 2004
Posts: 751
Hermiston Oregon
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mopar_leaner Offline OP
super stock
mopar_leaner  Offline OP
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Hermiston Oregon
any ideas about gaping the plugs in a BB with 180psi cylinder pressure and a MSD StreetFire ignition box?


( it takes a Mopar, to beat a Mopar!
email me at moparleaner@gmail.com )
Re: gaping the plugs with MSD [Re: mopar_leaner] #1521709
10/22/13 09:37 PM
10/22/13 09:37 PM
Joined: Jan 2003
Posts: 5,442
Indiana
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YO7_A66 Offline
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YO7_A66  Offline
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Indiana
I have my plugs gapped to .045 with the Streetfire box.

EDIT:
MSD Blaster High Vibration Coil

Last edited by YO7_A66; 10/24/13 09:30 AM.

1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: gaping the plugs with MSD [Re: YO7_A66] #1521710
10/22/13 09:42 PM
10/22/13 09:42 PM
Joined: Sep 2004
Posts: 6,906
IL, Aurora
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ademon Offline
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ademon  Offline
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IL, Aurora
.045 on mine, I think with normal run of the mill plugs that's about all they will open and still be parallel electrode to strap.

Re: gaping the plugs with MSD [Re: ademon] #1521711
10/22/13 10:27 PM
10/22/13 10:27 PM
Joined: Nov 2007
Posts: 21,808
Kirkland, Washington
Pacnorthcuda Offline
Too Many Posts
Pacnorthcuda  Offline
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Posts: 21,808
Kirkland, Washington
.045 with my 6al, I know I could go larger, but I doubt there would be any benefit.

Re: gaping the plugs with MSD [Re: Pacnorthcuda] #1521712
10/23/13 09:16 AM
10/23/13 09:16 AM
Joined: Jan 2003
Posts: 21,050
Niles , Ohio
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therocks Offline
oh wait.but hey.lets see.oh yeah.
therocks  Offline
oh wait.but hey.lets see.oh yeah.
T

Joined: Jan 2003
Posts: 21,050
Niles , Ohio
.045 with the 2 setups we have also.Been running that for years.Rocky


Chrysler Firepower
Re: gaping the plugs with MSD [Re: therocks] #1521713
10/23/13 09:23 AM
10/23/13 09:23 AM
Joined: Jul 2004
Posts: 751
Hermiston Oregon
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mopar_leaner Offline OP
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mopar_leaner  Offline OP
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Hermiston Oregon
to all,
thank you very much.... .045 it is!!!


( it takes a Mopar, to beat a Mopar!
email me at moparleaner@gmail.com )
Re: gaping the plugs with MSD [Re: mopar_leaner] #1521714
10/23/13 07:24 PM
10/23/13 07:24 PM
Joined: Apr 2010
Posts: 4,154
bethlehem pa
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mikemee1331 Offline
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bethlehem pa
umm, the coil fires the plugs not the box. while a .45 is great for say a blaster2 coil it might cause problems with a stock coil. all the box does is tell the coil to fire. or i'm confused. the multi-spark of a MSD ECU might not allow a stock coil to 'recharge' enough to bridge a .45 gap repeatedly. just thinking out loud.......

Re: gaping the plugs with MSD [Re: mikemee1331] #1521715
10/24/13 09:21 AM
10/24/13 09:21 AM
Joined: Jul 2004
Posts: 751
Hermiston Oregon
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mopar_leaner Offline OP
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mopar_leaner  Offline OP
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Hermiston Oregon
Good news, the coil is a blaster by MSD, so we are set with the gaps at .045.


( it takes a Mopar, to beat a Mopar!
email me at moparleaner@gmail.com )
Re: gaping the plugs with MSD [Re: mopar_leaner] #1521716
10/24/13 11:03 AM
10/24/13 11:03 AM
Joined: Sep 2004
Posts: 2,091
oberlin, Ohio
Rapid340 Offline
top fuel
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Joined: Sep 2004
Posts: 2,091
oberlin, Ohio
Quote:

umm, the coil fires the plugs not the box. while a .45 is great for say a blaster2 coil it might cause problems with a stock coil. all the box does is tell the coil to fire. or i'm confused.




The box also plays a big role in the quality of the spark. It must be able to drive enough current to handle the coil being used (some coils have low impedance and deliver high secondary current). The rate at which the box interrupts the current also directly affects secondary voltage level.


1971 Factory Appearing Duster 340 11.000 @ 122 mph






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