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Old 05-03-2020, 12:33 PM   #1
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Spark Plug Choices

Anyone want to weigh in on this...have my choice of spark plugs, is one of these superior to the other?
picture is hard to see, but details are:
NGK Laser Iridium
Bosch Platinum +4
Why?



Last edited by tonythetiger; 05-03-2020 at 01:13 PM. Reason: more detail
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Old 05-03-2020, 03:42 PM   #2
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I love Bosch plugs, and run them now. Had a 75 Norton 850 which would run on nothing else.
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Old 05-03-2020, 04:55 PM   #3
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Well could talk gap life, indexing etc. I'll just let a set of the Bosch +4s speak for themselves. These plugs came out of my car at 110k and had 30k on them.







I installed the same replacements.
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Old 05-03-2020, 05:34 PM   #4
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what I pulled out of bank

OK, So these are Beru Ultra...and the coil packs were also Beru, so don't know if those are original. One is cracked and the tubes are leaking oil, so everything is getting replaced while I wait for a few additional parts for the main project.

they have about 20K from me, no telling how long before that.
How do they look? (you probably need to zoom in for detail)
BTW, it was weird, but they were not screwed in very tight...I didn't even feel resistance as I started them out, initially thought the socket was missing or too large. All six of them.

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