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Author Topic: Spark Plugs  (Read 140 times)

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Offline Scott Montoney

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  • Posts: 662
  • 1952 - 220 Cab B
  • Exterior Color: Black
  • Interior color: Red
  • Location: Mason,Ohio USA
  • VIN #: 187.013.04370/52
  • Year_Model: '52 220 Cab B
Spark Plugs
« on: May 05, 2021, 01:10:03 PM »
For about 14 years now, I have used NGK 4111 BP5HS spark plugs.
Apparently they have now been discontinued.
NGK offers the Resistor version as its replacement.  NGK 6222 BPR5HS.

I understand why there are resistor plugs and wires, For noise suppression, but I have never used them in my car.
Is there any reason I couldn't use them from an engine performance/reliability standpoint?

Thanks you.
Scott
"Gertrude" a.k.a. "Troidl"
1952 - 220 Cabriolet B

Offline Henry Magno

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  • Posts: 855
  • Location: USA, Massachusetts
  • Year_Model: 1952 220 Cab B, 1937 320 Sedan, 1937 320 Combination Coupe, 1938 320 Cab A LWB
Re: Spark Plugs
« Reply #1 on: May 26, 2021, 04:01:33 PM »
Hi Scott,

Did they eliminate every heat range? I think in a good running engine with a minimum of oil consumption, they would be OK if you don't have any other resistance in the system, like plug connectors. It won't hurt to try, you might just foul plugs.

Maybe we need to source another brand.