Sparks plug question
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
NGK Iridium are the best and last pretty much for the life of the bike if your pocket money will stretch to a set of BPR5EIX-11
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
I am a professional cynic and tried the Iridiums expecting them to be ho-hum but on both my bikes (Evo and then TC) they did exactly what the hype said they would, so now that is all I use.....although it will be a very long time before I need to change plugs.
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
There was an English guy on the Dyna forum a while back who would have just loved to argue that point with you...he claims that H-D plugs have a special resistance rating that other brands do not have which means the motor lasts way longer if you use the H-D ones...he wouldn't back down either.....I think he must have been a paid H-D troll....
Trending Topics
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,168
Likes: 7,676
From: Poolville
Preference
It's sort of like the sound of an exhaust "Which Exhaust Sound Best" It's about dependability and preference. I've used Autolite Platinums for years and never an Issue. Doesn't mean it's the best but what worked for me..
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
Jason Momoa Is Turning Classic Harleys Into PHEVs
Verdad Gallardo
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Verdad Gallardo
6 Weirdest Harley-Davidsons Ever Sold to the Public
Verdad Gallardo
7 Times Harley-Davidson Chucked Tradition Out the Window
Verdad Gallardo
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Road Master
Joined: Feb 2014
Posts: 913
Likes: 5
From: indiana
I was asked why I say ngk plugs are the best so im going to put it in this thread.
there is only one reason longevity and superior quality in the materials they use.
ive been using ngk plugs for over 30 years and found if you have a motor that loves to foul plugs like my old Suzuki lt250r ngk is the way to go. and ive tried lots of different plugs I usually would get about 8hr out of a ngk plug. with champion about 45min bosh about 3hr and autolite around 4hr.
my shovel head would eat autolite plugs once a month and now with the ngk plugs every six months.
will ngk plugs make more hp? who cares they last longer....
there is only one reason longevity and superior quality in the materials they use.
ive been using ngk plugs for over 30 years and found if you have a motor that loves to foul plugs like my old Suzuki lt250r ngk is the way to go. and ive tried lots of different plugs I usually would get about 8hr out of a ngk plug. with champion about 45min bosh about 3hr and autolite around 4hr.
my shovel head would eat autolite plugs once a month and now with the ngk plugs every six months.
will ngk plugs make more hp? who cares they last longer....