Go Back   Harley Davidson Forums > Harley Davidson Motorcycles > Softail Models
Sign in using an external account
Register Forgot Password?
Search

Softail Models Standard, Custom, Night Train, Deuce, Springer, Heritage, Fatboy, Deluxe, Rocker and Cross Bones.

Reply
 
 
 
P
 
Thread Tools Search this Thread
  #1  
Old 12-24-2010, 07:37 PM
Mike Kautzman Mike Kautzman is offline
Hang Around
Join Date: Sep 2009
Posts: 61
Default Best Spark Plugs to use?

What are the best spark plugs to use and why? What brand and plug# along with heat range?
I want to replace the ones in my 09 Crossbones and know theres something better than HD plugs. I heard NGK's are good???

Thanks and Happy Holidays!
Reply With Quote
  #2  
Old 12-24-2010, 08:18 PM
Mr. Lucky's Avatar
Mr. Lucky Mr. Lucky is offline
Outstanding HDF Member
Join Date: Mar 2008
Location: SoCal via Mass.
Posts: 2,114
Send a message via Skype™ to Mr. Lucky
Default

It really doesn't matter what the "best" plugs are. High performance plugs tend to have higher internal resistance. The stock plugs (and that includes Screamin' Eagle) are the only ones that won't screw with the ION sensing circuit, thus causing false ignition retard where none is required, or worse... failing to retard timing when it is required. My stock plugs on a tuned, stage-1 96" motor still looked fine at 18K miles, and were within spec for gap. I don't believe in fixing what isn't broken.

Of course, if you have an aftermarket ECM, you can probably use whatever plugs you like.
__________________
http://www.hdforums.com/forum/image.php?type=sigpic&userid=55882&dateline=122801  2109
Reply With Quote
  #3  
Old 12-24-2010, 08:21 PM
edeluxe07's Avatar
edeluxe07 edeluxe07 is offline
Senior Rider
Join Date: Nov 2007
Location:
Posts: 491
Default

I've not had any issues with stock plugs...I replace them every oil change..cheap insurance.. I read somewhere (may have been on t his forum), that you don't benefit any by having non-stock plugs/wires on the stock engines....
__________________

________________________________
2007 Deluxe
V&H BSS exhaust, Mastertune TTS
Reply With Quote
  #4  
Old 12-24-2010, 10:28 PM
Sash302 Sash302 is offline
Road Warrior
Join Date: Mar 2009
Location: Macomb MI
Posts: 1,738
Default

Quote:
Originally Posted by Mike Kautzman View Post
What are the best spark plugs to use and why? What brand and plug# along with heat range?
I want to replace the ones in my 09 Crossbones and know theres something better than HD plugs. I heard NGK's are good???

Thanks and Happy Holidays!
here you go dude watch the video,those are going in when I do a stage one on my bike.
good luck.
http://www.youtube.com/watch?v=03kB8bgXJP8
__________________
2011 FTBOY LO ( totaled, glad I am here to teal the teal)

2009 NIGHTTRAIN SOLD

HARLEY FOR LIFE
Reply With Quote
  #5  
Old 12-25-2010, 12:25 AM
Mike Kautzman Mike Kautzman is offline
Hang Around
Join Date: Sep 2009
Posts: 61
Default

Nice video? Maybe plugs can make a difference. I have a SE Air Cleaner Assy, Vance & Hines short shot exhaust with Dealer stage I download. Think these NGK's would be right plugs for my setup?

Thanks again!
Reply With Quote
  #6  
Old 12-25-2010, 08:31 AM
nvsteve nvsteve is offline
Ultimate HDF Member
Join Date: Oct 2006
Location: Nevada
Posts: 5,736
Default

I have the Iridium NGK plugs in my bike now. No noticeable difference. When I replace them I'll go with the standard NGK or Autolite.
Reply With Quote
  #7  
Old 12-25-2010, 09:23 AM
coronerrpm coronerrpm is offline
Road Master
Join Date: Apr 2010
Location: Delawere
Posts: 778
Default

I have the stock ones and will replace them again with the stock ones. They are working just fine.
__________________

2010 Fat Boy
Black Ice Pearl-Power commander 5
Fuel Moto air cleaner-V&H Big Radius pipes/BCT baffles, Street Slammer Bars, LED lights & WAY to much crap and still adding more!
Reply With Quote
  #8  
Old 12-25-2010, 10:45 AM
rodhotter rodhotter is offline
One Of The Regulars
Join Date: May 2006
Location: pennsylvania
Posts: 239
Default

i recently put accel non resistor plugs in my stage I 1200 sporty runs excellent, non resistor copper plugs are said to fire better, the only metal with less resistance is silver or gold, i do not believe in the hype of exotic metals, the reason newer cars use then is because they must warranty emission parts for 100,000 miles, longevity and not performance is the issue here
__________________
bernard j czech
Reply With Quote
  #9  
Old 12-25-2010, 11:19 AM
DWKen's Avatar
DWKen DWKen is offline
New Member
Join Date: Dec 2010
Location: Dallas, Texas
Posts: 44
Default

There's absolutely no reason to switch brands of plugs unless you're trying to save a little bit of money to buy chrome.

Last edited by DWKen; 12-25-2010 at 12:22 PM..
Reply With Quote
  #10  
Old 12-25-2010, 12:19 PM
harleycharlie1992's Avatar
harleycharlie1992 harleycharlie1992 is offline
Ultimate HDF Member
Join Date: Dec 2009
Location: san diego
Posts: 8,467
Default

Quote:
Originally Posted by DWKen View Post
Don't believe everything you see. For one thing, I don't believe that motor was up to temperature. I never put a new plug into a hot motor. Does a person start a customer's motor and immediately do a red-line WOT run? Makes his before/after comparison invalid. Another thing, no anti-seize on the plug before installing and not torqued? My first impression of this mechanic is not competent, thinks he knows stuff.
The best plugs for an HD engine are the stock HD plugs. The knock sensing is sensitive to plug wires and plugs.

OH, and the spark doesn't go through one brand of plug any faster than another. Electricity flows through a conductor at a very high rate of speed, like 186,000 miles per second. There's no way it could spark any faster or slower through a plug.

Just my opinion, of course.
just because you don't put plugs in a hot motor doesn't mean others don't. no reason not to other than burning yourself, secondly plugs may or may not have had antisieze put on prior to installation, not all mechanics use the stuff, I do, and believe in it, but thats just me. third while current flows at a high rate (186000 mps) it doesnt jump gaps at the same rate. different metals will conduct the current better and metal with lower resistance will allow it to jump easier. its not hard to believe this vid. from a mechanics standpoint, I do believe its true and accurate, by the way I don't run the NGK plugs at this time, but I may consider it next plug change. every little bit helps
Reply With Quote
Old 12-25-2010, 12:19 PM
 
 
 
P
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Best spark plugs teqsand Touring Models 18 09-11-2014 01:23 PM
Spark plug? jtNIGHTSTER1 Sportster Models 10 10-01-2013 10:05 PM
Spark plugs epd612 Touring Models 4 08-09-2012 01:46 PM
2007 Ultra Classic Spark Plug Gap Modee1245 Touring Models 3 08-29-2010 06:56 PM
Spark plug's conversion chart Jessie Dyna Glide Models 4 05-17-2009 01:11 PM


Tags
2010, aftermarket, anti, davidson, eagle, evo, flying, harley, heritage, ion, motorcycle, plugs, sensing, sieze, spark


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Join HDForums

Advertising
Featured Sponsors
Vendor Directory
Sponsors

All times are GMT -5. The time now is 01:34 AM.


Internet Brands, Inc.