Spark Plugs
#1
05-19-2023, 10:37 AM
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Spark Plugs
Best plugs, EVO 80ci
for a 99 evolution Softail custom 80 cubic inch.
Maybe somebody has put up a survey in the past that might be available not sure if I've seen that?
Any case , trying to sort through all the different plug varieties copper, copper core, platinum, platinum plus, iridium,,
what's your experience and thoughts on all these variations?
for a 99 evolution Softail custom 80 cubic inch.
Maybe somebody has put up a survey in the past that might be available not sure if I've seen that?
Any case , trying to sort through all the different plug varieties copper, copper core, platinum, platinum plus, iridium,,
what's your experience and thoughts on all these variations?
Last edited by cowpoke; 05-19-2023 at 10:43 AM. Reason: Title
#2
05-19-2023, 10:42 AM
Seasoned HDF Member
Best plugs,
for a 99 evolution Softail custom 80 cubic inch.
Maybe somebody has put up a survey in the past that might be available not sure if I've seen that?
Any case , trying to sort through all the different plug varieties copper, copper core, platinum, platinum plus, iridium,,
what's your experience and thoughts on all these variations?
for a 99 evolution Softail custom 80 cubic inch.
Maybe somebody has put up a survey in the past that might be available not sure if I've seen that?
Any case , trying to sort through all the different plug varieties copper, copper core, platinum, platinum plus, iridium,,
what's your experience and thoughts on all these variations?
I think there was a guy that used aftermarket spark plugs, claimed he got fewer colds and lasted longer in bed, but difficult to confirm.
Last edited by Keithhu; 05-19-2023 at 10:55 AM.
#3
05-19-2023, 11:18 AM
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#5
05-19-2023, 11:31 AM
Road Warrior
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t150vej (05-20-2023)
#6
05-19-2023, 11:51 AM
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Keithhu (05-19-2023)
#7
05-19-2023, 08:36 PM
Stock plugs or the Champion equivalent for the EVO work just fine, remember the engines were developed with a specific spark plug you won’t do any better and may do worse. Example, is the heat range and electrode design exactly the same? Extended tip is that way for a reason. If you substitute a plug with a flush tip not a wise swap, buddy did that on a boat motor and it ran terrible.
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brakeless (05-20-2023)
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#8
05-20-2023, 10:21 AM
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brakeless (05-20-2023)
#9
05-24-2023, 05:57 PM
This topic comes up a lot. I really like and use NGK plugs, and I installed a set of NGK iridiums in my 16 FXDB, only to have the EMC pull ignition timing—-what da….. so I tried NGK regular ones , same thing happened. A couple of guys on this forum said I was full of crap. Well they probably have a different set up, don’t know ( or care). The Ion- sense these bikes are equipped with do not like any thing but OEM. You can ohm out the OEM Champions and then others only to find extreme differences ( if that means anything or not). What I do know is that the OEM Champions work right , don’t retard the timing like the NGKs did and runs just fine.
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lightweight bob (05-29-2023)
#10
05-24-2023, 09:15 PM
