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  #1  
Old 10-21-2019, 12:46 PM
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magiccarpet magiccarpet is offline
 
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Location: Switzerland, Europe
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Default NGK vs. Rotax spark plugs

Would love to get your experience and opinions regarding the differences between the standard NGK DCPR8E and the Rotax (Bosch?) spark plugs P/N 297656.
Are there any benefits or disadvantages among them or do they perform equally in terms of combustion, CHT, reliability or anything?
Thanks a lot for sharing your thoughts on that.
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  #2  
Old 10-21-2019, 01:28 PM
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Tony_T Tony_T is offline
 
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No experience with the Bosch plugs here, but at 6 times the cost of the NGK, I doubt I will ever try them.
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  #3  
Old 10-21-2019, 03:42 PM
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Piper J3 Piper J3 is offline
 
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NGK work fine... Replaced first set ~200TT and now 500TT still running second set.
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  #4  
Old 10-21-2019, 04:06 PM
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DaleB DaleB is offline
 
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Quote:
Originally Posted by Tony_T View Post
No experience with the Bosch plugs here, but at 6 times the cost of the NGK, I doubt I will ever try them.
Exactly. I'll probably never know how the new Bosch plugs work because they're priced ridiculously high.
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  #5  
Old 10-21-2019, 09:29 PM
RFSchaller RFSchaller is offline
 
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I replace all mine with new every annual. The originals are cheap enough I donít even think twice about it. If the price goes up I might reconsider that practice.
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  #6  
Old 10-22-2019, 10:18 AM
NinerBikes NinerBikes is offline
 
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Location: Granada Hills
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My friend replaced his NGK's at 140 hours on the motor, at the 2nd annual. I think it was about 24 to $28 to buy all 8 plugs?

The used plugs looked practically new, there was no visible wear or rounding of the electrode edge surfaces, and the gap was still 0.026".

Bob has reached the conclusion that 200 to 280 hours on a set of NGK plugs would probably be no problem at all, although the price of the NGK's is so reasonable, just replace them if you're in there. No sense in being penny wise and pounds foolish, think about what your time is worth once all the cowling is already off.
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  #7  
Old 10-22-2019, 10:21 AM
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DaleB DaleB is offline
 
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Yeah... I kind of wish I had a use for those plugs in some other engine! We change them every annual, and the old plugs are still in find shape and would be still be usable in something else. At less than $3 each, though, we just change 'em.
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  #8  
Old 10-22-2019, 09:11 PM
RFSchaller RFSchaller is offline
 
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I carry two of my used plugs in my on-the-road bag of spare parts just in case. Thatís how I make use of the old ones.
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  #9  
Old 10-26-2019, 06:48 PM
Catbird Catbird is offline
 
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Location: Birmingham, Alabama
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I believe Magic Carpetís original question was related to comparison between the Rotax plugs and the NGK plugs. We all like the NGKs for the aforementioned reasons. But, does anyone have any experience with the Rotax plugs?
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  #10  
Old 10-27-2019, 01:28 PM
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magiccarpet magiccarpet is offline
 
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Thanks a lot everyone for your comments. Based on them I conclude that there isn't any added value to go with the Bosch ones except to spend more $$.😉
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