I've read several posts on here stating not to gap platinum spark plugs. I just replaced my stock factory installed motorcraft platinum plugs with autolite 764 platinums. The gap call for .54 but the plugs out of the package were approx .44. The factory installed motorcraft plugs were gapped to approx .54. needless to say, i regapped the new plugs to .54. Can someone please make sense of this ?
Question About Platinum Spark Plugs
- Thread starter Quadgod
- Start date
twogts4us
15 Year Member
Make sense of why you should gap the plats? I guess because you stand a decent chance of f'ing up the plat tip. .54 gap is where you want to be without a power adder. Personally, I prefer Autolite copper plugs...cheaper, don't last as long but copper is a superior conductor. Plus I don't mind changing them once a year or so and it gives me the chance to inspect them and really get a good idea about how the motor has been running.
I think it is specifically the Bosch dual and quad fire platinums that are not to be gapped. I do not think the "do not gap" advice applies to other types of platinum plugs.
Use copper plugs, Motorcraft AGSF-32C specifically... Platinum is for people who do not want to change their plugs as often and are willing to settle for a colder spark.
Use copper plugs, Motorcraft AGSF-32C specifically... Platinum is for people who do not want to change their plugs as often and are willing to settle for a colder spark.
Dark Knight GT
I can't get it up......ok that didn't sound right.
For a quick recap.
.054 = Ideal for stock and n/a setups
.044 = Idea for boosted conditions.
Copper = Better conductor for spark and thus, better for performance. Live expectancy is shorter than platinum.
Platinum = Better for mileage, but worse in terms of performance than copper.
Iridium = Best of both worlds, but OUTRAGEOUSLY EXPENSIVE!
.054 = Ideal for stock and n/a setups
.044 = Idea for boosted conditions.
Copper = Better conductor for spark and thus, better for performance. Live expectancy is shorter than platinum.
Platinum = Better for mileage, but worse in terms of performance than copper.
Iridium = Best of both worlds, but OUTRAGEOUSLY EXPENSIVE!
CanadaStang
New Member
twogts4us
15 Year Member
What's the theory behind that? I understand you'll get more mileage from them (as in a longer life), but I don't see someone getting better MPG (all things being equal, of course).Dark Knight GT said:
The do not gap thing is really for those Bosch "waste-of-money" plugs with 16 prongs.
Worst case scenario you gap a platnium plug and scratch the platnium coating off and expose the copper core. Now you have a copper plug basically.
Personally i would save the money on plats and just get coppers to begin with.
Worst case scenario you gap a platnium plug and scratch the platnium coating off and expose the copper core. Now you have a copper plug basically.
Personally i would save the money on plats and just get coppers to begin with.
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