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Platinum plugs?
#1
I changed the oil in my '73 4v today and due to the way it's been running, I checked the plugs. They are Bosch platinums. I've never used platinum plugs before because I was told to never use them if your car didn't come with them. Is this true?
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#2
i do not think it is...Sure some plugs burn hotter than othere's "reason we have to pick the right one for our motors" but what you get from platinum tipped plugs is longer plug life mostly.
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#3
Oh ok. Besides that, will they make the engine rune any better/worse?
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#4
cazsper;160892 Wrote:Oh ok. Besides that, will they make the engine rune any better/worse?

Mmm from what i know..Should not make much of a dif..Besides at super high rpm and for lasting longer...When the older plugs have a hard time keeping up. "but thats like at 9500 rpm" ..lol..requires a colder than normal plug for that kinda high revs.....The right make of platinum for your car, should run the same as a older plug over all...Alot of claims in the spark plug world..So it kinda like snake oils...Counts what you wanna believe...As for me...i like to pull the plugs out and see how they are burning..If they burning nice golden color.."No matter the make of plug" then it is burning properly and working just fine.
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#5
A fresh conventional plug will run slightly better but won't be better for even a tenth the life of a platinum plug. Platinums can also act as a detonation source w n2o or a blower... bosch plugs habe been known to drop the center electrode into the engine killing it...

my $.02: run good conventional plugs and maintain it.
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#6
Damn.. I think I'll get rid of them.
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#7
In the 5.0 EFI engines, the Platinum plugs do not improve power and seem to mess with the electronics in some manner (resistance?) Conventional wisdom in those engines is to simply run conventional plugs. In a 351C I don't see that they are of any value.

[Image: 1_01_07_15_8_53_18.png]

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!
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#8
Bosch Platinum Plugs have a thin platinum rod sintered into a unique insulator design. Platinum plugs reach their self-cleaning temperature even earlier than copper core plugs. This results in quicker starts and smoother acceleration. With a 99.9% platinum center electrode and a unique insulator design, the platinum plug has a wider heat range than copper core plugs and reaches its self-cleaning temperature only seconds after the start. They last longer too


according to the spark plug experts...But not really needed...Most of us would not be able to tell much diffrence.
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#9
I have read that Platinum plugs (and other precious metal plugs like iridium) are more detonation prone and are not recommended for race applications.

I think the K.I.S.S. principle applies here.

73 conv. 460, D0VE large valve heads, Performer RPM manifold, Voodoo 227/233 cam, Holley 950 HP carb, C6 trans, 3.25 trak-loc.
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#10
Silverback;160895 Wrote:A fresh conventional plug will run slightly better but won't be better for even a tenth the life of a platinum plug. Platinums can also act as a detonation source w n2o or a blower... bosch plugs habe been known to drop the center electrode into the engine killing it...

my $.02: run good conventional plugs and maintain it.

Yes - for that reason, I will never run Bosch Platinums again. My '80 Jeep CJ-7 would occasionally foul a plug (usually #4), and when I would pull it out to clean and reinstall, I noticed I'd have to separate the central electrode core from the side electrode and stuff it back down into the porcelin central core insulator. After I replaced that plug (it was cold the first time I noticed that, so I just jammed it back in and went on my way), it did it again a few months later with a completely new set of Bosch Platinums. OK - screw that... good ol' Champions are going back in. That was 8 years ago, and I've never had a problem with those plugs ever since. I even ran a set of Champion Truck Plugs... and yeah - those things sucked and didn't last very long, either.

Along that line of thinking, our cars came with either Autolite or Motocraft as standard plugs. Guess what's in my car right now? Autolites, because they didn't have enough Motorcrafts at O'Reilly's that day. Wink Big Grin

I'm not sayin'... I'm just sayin'.

Eric

[Image: mach1sig2.gif]
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