Harley Davidson Forums

Sportster Models 883, 883 Custom, 1200 Custom, 883L, 1200L, 1200S, 1200 Roadster, XR1200, and the Nightster.
Sponsored by:
Sponsored by:

SPARKPLUG GAP

Thread Tools
 
Search this Thread
 
Old Mar 8, 2017 | 11:24 PM
Share
  #11  
Hurricane 68's Avatar
Hurricane 68
Road Captain
Joined: Nov 2016
Posts: 628
Likes: 112
From: Sparks Nevada
Default Trying new plugs
Have been going through different makes of spark plugs bought some new E3 for my custom 04 Sporty has big S&S motor w/ Mikuni 48 HSR carb running straight pipes no baffles approx Dyno 125hp. On premium pump gas. Well any way have been impressed with the E3 so far have been in bike 12 months lot of short rides and I ride hard , still running same ones checked once and gap was within couple thousands of first setting. Just my two cents. Good luck. Wild Bill.
ps E3 come pregapped for my app. At .040 left them there
 
Attached Thumbnails SPARKPLUG GAP-image.jpeg  
Last edited by Hurricane 68; Mar 8, 2017 at 11:30 PM.
Reply
0
Old Mar 9, 2017 | 10:05 AM
Share
  #12  
Madnss's Avatar
Madnss
Grand HDF Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2012
Posts: 3,782
Likes: 1,202
From: river
Default
The bigger the gap the more powa. I run my gaps at 50 and 52. 52 on the rear because it's the hitter cyclinder
 
Reply
0
Old May 24, 2018 | 08:20 PM
Share
  #13  
BFC883's Avatar
BFC883
4th Gear
Joined: May 2018
Posts: 8
Likes: 0
From: Maybee, Ohio
Default
Originally Posted by cHarley
I believe the spec is 38-43 thousands. I always do 40. I didn't think there was a difference with 06. Maybe you have weak spark?
yes this is correct via the Haynes manual.
 
Reply
0
Old May 25, 2018 | 04:05 PM
Share
  #14  
John Harper's Avatar
John Harper
HDF Community Team
10 Year Member
Joined: Dec 2011
Posts: 8,620
Likes: 4,058
From: San Diego, CA
Community Team
Default
Originally Posted by 1200c
Exactly, you just gapped your spark plugs out of spec.
How is .040 out of spec if the range is .038 to .042?

John
 
Reply
0
Old May 25, 2018 | 04:11 PM
Share
  #15  
underwhelmd's Avatar
underwhelmd
Tourer
Joined: Feb 2018
Posts: 469
Likes: 140
From: East Coast, Canada
Default
Originally Posted by John Harper
How is .040 out of spec if the range is .038 to .042?

John

I suspect you'll have to zoom back in time to 03/17 to find out.
 
Reply
0
Old May 26, 2018 | 12:35 AM
Share
  #16  
lh4x4's Avatar
lh4x4
Extreme HDF Member
Joined: Dec 2007
Posts: 13,402
Likes: 941
From: Illinois
Default
Or 4/3/07. I'm sure that the OP has went through many plugs by now and even bikes.
 
Reply
0
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
E3 spark plugs a
Vdoubleyou
Sportster Models
3
May 7, 2012 01:00 PM
Iridium Spark Plugs for 06 FXDLI Good or bad choice?
Jawag61
Dyna Glide Models
21
Nov 30, 2011 06:58 AM
White Spark Plugs from 06 SG
only90s
Touring Models
8
Apr 1, 2008 06:54 PM
E3 spark plugs
MICLEA0317
Sportster Models
6
Oct 28, 2007 01:30 PM
'06 Dyna Spark plugs - Cross Reference
Mascman
Dyna Glide Models
5
Jun 12, 2006 10:16 AM
Tags
Back to Subforum
Sportster Models
View Next Unread
2003 XL 1200C good buy?




Advanced Search
Reply Closed Thread Share
Forum Jump

All times are GMT -5. The time now is 10:15 AM.

story-0
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.

By Verdad Gallardo | 2026-06-03 18:28:05


VIEW MORE
story-1
6 Weirdest Harley-Davidsons Ever Sold to the Public

Slideshow: From military-inspired singles to scooters and three-wheel utility vehicles, these Harleys took the company far outside its comfort zone.

By Verdad Gallardo | 2026-06-02 18:34:10


VIEW MORE
story-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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