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  #1  
Old 09-25-2015, 10:25 PM
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1974 280C spark plug suggestion

I was wondering if anyone has any suggestions for spark plugs for my 1974 280C. I was reading the manual and it stated the gap is supposed to be set at .028. That seems like a very small gap. Any thoughts would be appreciated. It is a federal model.
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  #2  
Old 09-26-2015, 08:09 AM
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I prefer NGK BP6ES. .028-.034 is the recommended gap. The gap is smaller than newer models because this is not a H.E.I. system.
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Old 09-26-2015, 12:45 PM
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second what Mike says, I like the NGK or Bosch
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Old 10-23-2015, 10:08 AM
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NGK is supurb in quality and for use in our older models .Do note the above advised plug does not have a 'R'' in the number important for correct operation.

Bosch plugs sourced from Germany ,Russia are good ,from India occasionally a dud one after a short run
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