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| Plug Gap with Pertronix https://ausmini.com/forums/viewtopic.php?f=2&t=99022 |
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| Author: | Hanra [ Sat Aug 24, 2019 12:36 pm ] |
| Post subject: | Plug Gap with Pertronix |
With my 1330cc what’s a suggested plug gap when running a Pertronix Flame Thrower Coil and Pertronix module? Currently running NGK BP5EY with .030’ gap. Should I open it up to .035’? Or leave things be? All running fine otherwise. |
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| Author: | lomin [ Sat Aug 24, 2019 1:31 pm ] |
| Post subject: | Re: Plug Gap with Pertronix |
Hi, I do not believe you should open it up. That does not have a big spark output, and you risk misfiring as every single gap in the system uses some spark , leaving little for firing the hard to burn ULP cheers Lindsay Siebler |
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| Author: | Ian_B [ Sat Aug 24, 2019 3:30 pm ] |
| Post subject: | Re: Plug Gap with Pertronix |
Stronger spark with less area versus weaker spark with bigger area .As long as the spark causes combustion then which is best .Any engineers here? |
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| Author: | drmini in aust [ Sat Aug 24, 2019 4:01 pm ] |
| Post subject: | Re: Plug Gap with Pertronix |
If you go too far, you will get a low speed misfire during warmup when cold. I used to run .035" with a Bosch GT40 and a Pertronix ignitor, but it would misfire at .040". I agree with lomin, .030" is best. |
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| Author: | Hanra [ Sat Aug 24, 2019 4:57 pm ] |
| Post subject: | Re: Plug Gap with Pertronix |
No worries. Left at .030. Cheers. |
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