Harley Davidson Forums

Touring Models Road King, Road King Custom, Road King Classic, Road Glide, Street Glide, Electra Glide, Electra Glide Classic, and Electra Glide Ultra Classic bikes.
Sponsored by:
Sponsored by:

Plugs?

Thread Tools
 
Search this Thread
 
Old Jun 20, 2012 | 06:52 PM
Share
  #11  
drukanfu's Avatar
drukanfu
Supporter
Joined: Aug 2008
Posts: 5,189
Likes: 16
From: N.E. Wisconsin
Default
Hey !...one guy said I indexed my plugs and noticed a big improvement. Well, this depends alot on other factors to achieve this. Normally when indexing your plugs you will only notice a Slight improvement at the drag strip during high rpm range. Go ahead and do it if you want, but don't expect to see a regular seat-o-the-pants experience !
 
Reply
0
Old Jun 20, 2012 | 07:06 PM
Share
  #12  
TUCCI's Avatar
TUCCI
Extreme HDF Member
Joined: Jun 2011
Posts: 10,216
Likes: 224
From: Glendale AZ
Default
Here's some visual aide to go with the explanation:



 
Reply
0
Old Jun 20, 2012 | 07:12 PM
Share
  #13  
Gliden's Avatar
Gliden
Club Member
Joined: Jun 2009
Posts: 5,323
Likes: 37
From: NJ
Default
Originally Posted by TUCCI
Here's some visual aide to go with the explanation:



Nicely done! Thanks
 
Reply
0
Old Jun 20, 2012 | 07:21 PM
Share
  #14  
mgmmgm's Avatar
mgmmgm
Outstanding HDF Member
Joined: Feb 2007
Posts: 2,710
Likes: 6
From: Spokane, WA.
Default
anyone run iridium plugs?

http://www.cyclesolutionsonline.com/...park_Plugs.htm
 
Reply
0
Old Jun 20, 2012 | 07:35 PM
Share
  #15  
Armstronges's Avatar
Armstronges
Road Captain
Joined: Feb 2012
Posts: 525
Likes: 1
From: Oklahoma
Default
Good info drukanfu and tucci. Thanks.
 
Reply
0
Old Jun 20, 2012 | 09:23 PM
Share
  #16  
D-9 OPERATOR's Avatar
D-9 OPERATOR
Cruiser
Joined: Jan 2009
Posts: 160
Likes: 0
From: CALIFORNIA
Default
What washers do you use to index the plugs with if i may ask?
 
Reply
0
Old Jun 21, 2012 | 09:11 AM
Share
  #17  
GMRO's Avatar
GMRO
Thread Starter
|
Road Captain
Joined: Nov 2011
Posts: 505
Likes: 50
From: Russellton, PA
Default
Originally Posted by TUCCI
Here's some visual aide to go with the explanation:


Great info!

So the black mark on this plug is actually that BACK side of the metal curved part on the plug? So the spark is being MORE thrown towards the engine and not outward by your leg?

THANKS!
 
Reply
0
Old Jun 21, 2012 | 09:21 AM
Share
  #18  
gmc's Avatar
gmc
Road Warrior
Joined: May 2008
Posts: 1,802
Likes: 2
From: Salt Lake City, UT. Dushore, Pa.
Default
Originally Posted by D-9 OPERATOR
What washers do you use to index the plugs with if i may ask?
I got them here:
http://youroilshop.com/plugs.htm

I use Blue Lightning plugs that have a 2 year warranty and seem to give a little boost.

http://www.bluelightningsparkplugs.com/results.aspx
 
Last edited by gmc; Jun 21, 2012 at 09:28 AM.
Reply
0
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-1

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-2

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-4

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-5

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-6

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-7

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-8

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-9

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
Old Jun 21, 2012 | 09:38 AM
Share
  #19  
GMRO's Avatar
GMRO
Thread Starter
|
Road Captain
Joined: Nov 2011
Posts: 505
Likes: 50
From: Russellton, PA
Default
Originally Posted by gmc
I got them here:
http://youroilshop.com/plugs.htm

I use Blue Lightning plugs that have a 2 year warranty and seem to give a little boost.

http://www.bluelightningsparkplugs.com/results.aspx
Great info, great pics! And all questions answered!!!

THANK YOU!
 
Reply
0
Old Jun 21, 2012 | 11:27 AM
Share
  #20  
journeyman's Avatar
journeyman
Road Master
15 Year Member
Liked
Loved
Joined: Mar 2010
Posts: 934
Likes: 54
From: SE Wisconsin
Default
Originally Posted by mgmmgm

I'm happy running the iridium plugs.
You might want to go one range colder though, for any plugs on the 103 that is.
 
Reply
0



Advanced Search
Reply Closed Thread Share
Forum Jump

All times are GMT -5. The time now is 06:13 AM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE