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| Correct spark plug gap https://slantsix.org/forum/viewtopic.php?t=39602 |
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| Author: | crickhollow [ Sun Mar 28, 2010 4:19 pm ] |
| Post subject: | Correct spark plug gap |
I have a slant six motor and the workshop manual specifies spark plug gap to be set .033 to .037 thou. I have added Pertronix 1 electronic ignition (and very happy with the result) and have heard that I should gap the plugs to say .040 thou as a stronger and bigger spark is produced with electronic ignition. I would appreciate your views on whether I should increase the spark plug gap if electronic ignition is fitted. Thanks |
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| Author: | Fopar [ Sun Mar 28, 2010 5:02 pm ] |
| Post subject: | |
With HEI's all seem to like 0.040--0.45 |
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| Author: | carlherrnstein [ Sun Mar 28, 2010 5:12 pm ] |
| Post subject: | |
With my HEI at first i just had the gap set at .035'' then rememberd to widen the gap. Then I took it to .050'' and it seemed to run ''better''. |
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| Author: | emsvitil [ Sun Mar 28, 2010 7:38 pm ] |
| Post subject: | |
I'm running .045 with a pertronix I and spiral core ignition wires...... Also they're extended tip spark plugs. |
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| Author: | Reed [ Sun Mar 28, 2010 8:38 pm ] |
| Post subject: | |
I have run .045 for years with both stock mopar and HEI ignitions. |
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| Author: | SV162 [ Sun Mar 28, 2010 11:59 pm ] |
| Post subject: | |
crickhollow, I ran my plugs at 0.042" when I had Pertronix on it's own. Just have a play around with gaps, open them up till you start to notice changes, good or bad. You'll find what your engine likes. Have you installed a higher output coil, or are you still using the stock coil? |
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| Author: | crickhollow [ Mon Mar 29, 2010 12:58 am ] |
| Post subject: | Correct spark plug gap |
I am using the standard coil - I have connected the red wire from the Pertronix 1 unit to the ignition side of the ballast resister and the black wire from the Pertronix 1 unit to the (-) negative terminal on the coil. Peter |
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| Author: | Aggressive Ted [ Wed Mar 31, 2010 3:34 pm ] |
| Post subject: | |
I run .045 as well, either with the MSD Blaster 2 coil or the 3 ohm Pertronix HV HEI style 60,000 volt coil. The plug color is white with the HV coil. Cream/light biege with the Blaster 2. Still using the Orange ECU for now. |
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