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#16
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Japan isn't a 3rd world country (re NGK and Denso), LOL. India however is, and a ton of the Bosch plugs I see these days (especially non-copper core, but even those) are made outside of Europe. Doesn't necessarily make them "bad", I've used them on occasion, just an observation. And yes, like anything, plugs are made to different quality standards which can affect their longevity and performance. |
#17
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I have has terrible luck with India Bosch plugs..insulators spinning in the case on several...BAD manufacturing/POOR quality control....
Last edited by Arthur Dalton; 03-03-2007 at 03:36 PM. |
#18
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For many years, decades actually, I used nothing but NGK cooper, or Borch cooper and silver plugs because many have said platinum plugs are not as good. Couple years ago I tried a set of Borch Platinum +4 in my Porsche 944 and I was so impressed that I also put a set into my 928. A few months ago I decided to do the same with my 84' 500SEL. The Platinum +4 replaced a set of almost new NGK cooper plugs and once again they impressed. I have always heard that older Mercedes runs terrible with platinum plugs but it is not true in my case.
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#19
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You are incorrect
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#20
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Visit robert bosch.com and see for your self if they still manufacture non resistor plugs. Hope that puts your issue to rest.
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#21
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I would rather base my comment on actual scenario than just a phone call to a stranger (rep) who may also be sending wrong information. mine is just to inform the truth cause R. Bosch still makes these plugs. they just delivered to my dealership over a week ago. If you REALLY need these plugs its available for sale unlimited quantity. (for the sake of argiument, I suggest you try purchasing from my shop and see whos right, your representative from Bosch or the Parts and Sales Department of R. Bosch, Germany.
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#22
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Bosch plugs
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#23
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spark plugs
Since all bosch plugs available are resistor type, I am in the process of finding a non resistor alternative for the e420. This has lead me to a few questions:
What is the difference between the Beru # BP5ES and BCP6E? Different sources list different #'s. Are the Beru Ultras resistor or non? EDIT: Part # question above is for NGK plugs not Beru.
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Will 94 E420 82 300DT 77 F250 4x4 429 Cobra Jet 69 Thunderbird 429 Thunder Jet 92 Mitsubishi Galant VR-4 Last edited by willjohn123; 05-30-2007 at 12:17 PM. Reason: wrong info |
#24
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Bosch vs. NGK
I have been using NGK TR5's in my '88 260e and '92 300e for years with great results. Yes, they are resistor plugs, but still better than Bosch in my opinion.
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#25
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One thing I have learned over the last 50 years of working on cars is that the only plug to put in an engine is the one called for by the manufacturer. There are exceptions like NGK BP5ES Bosch. This is really because the Bosch are harder to find. The exception above was learned when I needed some plugs and couldn't find the correct plugs so I went with NGK from advice of Mersedes Shop users. If I could find a good source of the Bosch I would still use them.
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84 500 SEL (307,xxx miles) |
#26
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My '59 220SE always runs a little on the rich side, and NGK plugs work better than anything else on the market, imho. Now if I could only find some Packard 440 ignition wire....... |
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