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spark plugs on a 503
Posted: Wed May 01, 2013 5:00 pm
by Slider
hi
I need to know what will be the best spark plug for this engine
NGK BR8ES
OR
NGK BPR8ES (it looks a bit longer than above type)
What is the difference?
Leon
Re: spark plugs on a 503
Posted: Wed May 01, 2013 6:47 pm
by Wargames
Hi Leon,
Operating Manual says BR8ES.
Dont know the other plug, but rather stay with what ROTAX has defined for the motor.
Regards,
Dirk
Re: spark plugs on a 503
Posted: Wed May 01, 2013 8:16 pm
by Duck Rogers
Re: spark plugs on a 503
Posted: Wed May 01, 2013 8:43 pm
by Slider
Hi,
Great thank you for your help guys
Leon
Re: spark plugs on a 503
Posted: Wed May 01, 2013 9:29 pm
by Kalahari
Hi DR
Thanks for the interesting info.
Is the sheet with plug nrs that you supplied only applicable to NGK spark plugs?
Regards
Re: spark plugs on a 503
Posted: Thu May 02, 2013 1:31 am
by Duck Rogers
Kalahari wrote:Hi DR
Thanks for the interesting info.
Is the sheet with plug nrs that you supplied only applicable to NGK spark plugs?
Regards
Yes.........you will need to look up the equivalents if you want other manufacturers
Re: spark plugs on a 503
Posted: Thu May 02, 2013 7:05 am
by V
Slightly relevant info: plug with resistor ('R') or not. I've been shown once the inside of NGK plugs with resistor and without. In the non-resistor type the connection to the top (outer) terminal is a flimsy little wire that can actually break loose from vibration quite easily. These plugs have a much higher failure ratio for this reason. The resistor type is much-much more robust.
Cheers,
V.