Welcome to Our Community

Wanting to join the rest of our members? Feel free to sign up today.

Sign Up

Spark plugs

Discussion in 'Technical' started by lee, Dec 23, 2008.

  1. lee

    lee Well-Known Member

    Joined:
    Nov 5, 2007
    Messages:
    4,823
    Likes Received:
    65
    Trophy Points:
    48
    Location:
    Bristol, England
    My Bike(s):
    2005 Big Dog custom build and Buell custom build
    This has been asked many times on the forum. This link gives a list of all the different plugs you can use. Its the top list on the page (twin cam).

    I have used HD, Screamin Eagle, NGK and Champions and noticed no difference with any of them. Print it and put it in your manual.

    Spark Plug Interchange Guide
     
    Big D Florida, SKOGDOG and chubs like this.
  2. BrianLo

    BrianLo Active Member

    Joined:
    Nov 10, 2008
    Messages:
    577
    Likes Received:
    7
    Trophy Points:
    0
    Location:
    Mission, TX
    My Bike(s):
    2008 Big Dog K-9
    First Name:
    Brian
    Thanks!
     
    chubs likes this.
  3. Moespeeds

    Moespeeds Well-Known Member

    Joined:
    Mar 16, 2008
    Messages:
    2,742
    Likes Received:
    106
    Trophy Points:
    48
    Location:
    Cherry Hill, NJ
    My Bike(s):
    2004 Big Dog Chopper, 2011? Redneck Monoshock, 2003 Roadstar Midnight, 2000 Roadstar Custom
    Do the 107's and 117's use the same plugs? And why twin cam and not EVO? Just curious...Someone should sticky this!
     
    chubs likes this.
  4. LDO

    LDO The Cleaner
    Staff Member Supporting Member

    Joined:
    Apr 8, 2007
    Messages:
    2,756
    Likes Received:
    31
    Trophy Points:
    48
    Location:
    P-Cola FL.
    My Bike(s):
    03 Mastiff
    That's wierd because I have been using 4265s in my 107 since forever.:confused: :confused:
     
    chubs likes this.
  5. Raywood

    Raywood The Pirate
    Staff Member Supporting Member Calendar Participant

    Joined:
    Apr 5, 2007
    Messages:
    17,362
    Likes Received:
    589
    Trophy Points:
    113
    Location:
    Rainbow, CA
    My Bike(s):
    2014 KMW Regulator
    First Name:
    Ray
    Moe, BDM introduced the new SSW motor in 05 and it has the Twin Cam top end with the internal breathing system. It also uses the smaller Twin Cam plugs.

    I'll stick the thread for all.

    :cheers: :cheers:
     
    chubs likes this.
  6. LDO

    LDO The Cleaner
    Staff Member Supporting Member

    Joined:
    Apr 8, 2007
    Messages:
    2,756
    Likes Received:
    31
    Trophy Points:
    48
    Location:
    P-Cola FL.
    My Bike(s):
    03 Mastiff
    Hey Ray, isn't it actually called the SSW+ ?????:D
     
    chubs likes this.
  7. Raywood

    Raywood The Pirate
    Staff Member Supporting Member Calendar Participant

    Joined:
    Apr 5, 2007
    Messages:
    17,362
    Likes Received:
    589
    Trophy Points:
    113
    Location:
    Rainbow, CA
    My Bike(s):
    2014 KMW Regulator
    First Name:
    Ray
    Yep! :D
     
    chubs likes this.
  8. Moespeeds

    Moespeeds Well-Known Member

    Joined:
    Mar 16, 2008
    Messages:
    2,742
    Likes Received:
    106
    Trophy Points:
    48
    Location:
    Cherry Hill, NJ
    My Bike(s):
    2004 Big Dog Chopper, 2011? Redneck Monoshock, 2003 Roadstar Midnight, 2000 Roadstar Custom
    So what can we use in the pre-2005 motors?
     
    chubs likes this.
  9. Raywood

    Raywood The Pirate
    Staff Member Supporting Member Calendar Participant

    Joined:
    Apr 5, 2007
    Messages:
    17,362
    Likes Received:
    589
    Trophy Points:
    113
    Location:
    Rainbow, CA
    My Bike(s):
    2014 KMW Regulator
    First Name:
    Ray
    The Evo motor pluig or anything that corelates to the Champion RN12YC.

    :2thumbs:


    Plug Manufacturer 80 CID Evolution 1984-up
    Plug Gap .040"
    H-D Standard 5R6A
    H-D Gold 5R6AG
    H-D Platinum 5R6APP
    Champion RN12YC
    Autolite 4265
    Autolite Platinum AP4265DP2
    ACCEL 2410A
    Splitfire SF6D
    Screamin Eagle EVS13S - Hot
    EVS13P - Cold
    ACDelco 44NS
    NGK BPR5ES-11
    NGK Platinum BPR5EVX-11
    Bosch WR8D
    WR8DC
    WR8DP
    Denso Iridium IW16
     
    chubs likes this.
  10. john sachs

    john sachs Active Member

    Joined:
    Nov 6, 2008
    Messages:
    723
    Likes Received:
    547
    Trophy Points:
    93
    Location:
    Deltona, Fl
    My Bike(s):
    harleys
    Remember,there's NO magic in more expensive spark plugs.
    We've done A/B dyno testing,and found NO difference between stock(Champion/OEM),and all the supposed pricey "performance" plugs.:(
    John
     
    chubs and minermark like this.
  11. lee

    lee Well-Known Member

    Joined:
    Nov 5, 2007
    Messages:
    4,823
    Likes Received:
    65
    Trophy Points:
    48
    Location:
    Bristol, England
    My Bike(s):
    2005 Big Dog custom build and Buell custom build
    doesn't surprise me at all. John, have you ever tried indexing?
     
    chubs likes this.
  12. john sachs

    john sachs Active Member

    Joined:
    Nov 6, 2008
    Messages:
    723
    Likes Received:
    547
    Trophy Points:
    93
    Location:
    Deltona, Fl
    My Bike(s):
    harleys
    I generally do that.I try to get them as close as possible,buttttttttttttt sometimes it's hard.NOT TO DISCOURAGE,no real difference on street motors.:(
    John
     
    chubs likes this.
  13. lee

    lee Well-Known Member

    Joined:
    Nov 5, 2007
    Messages:
    4,823
    Likes Received:
    65
    Trophy Points:
    48
    Location:
    Bristol, England
    My Bike(s):
    2005 Big Dog custom build and Buell custom build
    Thanks John
     
    chubs likes this.
  14. coach

    coach Active Member

    Joined:
    Jul 15, 2007
    Messages:
    928
    Likes Received:
    9
    Trophy Points:
    18
    Location:
    Greenville SC
    My Bike(s):
    2011 Street Glide
    I had been thinking the bike ran better with the original plugs than with the new ones. A couple months ago I decided it was time even thou the plugs looked fine after 4500 miles, and seem to have the right mix of jets and pipes. I never changed the jets for the Bassini pro street pipes. Now that I have a set of Big Bertha 2-1 I picked up a new set of plugs for the hell of it. They handed me a set of NGK BPR5ES-11. I've been running them for 500 or so miles. Pulled them yesterday because the bike seemed to run a little cold.....popped a little more....etc but not that it ran much different. They looked fine except for small spot on both plugs, maybe 5%, where there was a carbon/black sooty spot. I put the Champion 12YC back in and I don't know if it is my imagination or not, but the bike seemed to run better. I'm going to put a few more miles before forming a opinion. Champion plugs never impressed me as a quality plug in cars or bikes. I am going to keep my eye on this thread and listen to comments or experiment a bit on my own.
     
    chubs likes this.
  15. mrthick71

    mrthick71 Member

    Joined:
    Sep 22, 2008
    Messages:
    21
    Likes Received:
    2
    Trophy Points:
    3
    Location:
    Fond du Lac, Wisconsin
    My Bike(s):
    07 Mastiff w/whiplash paint, V&H Big Radius, D&M Spike Air Cleaner, S&S .600 cam
    First Name:
    Stretch
    I went from the champions to an NGK (cuz I always had good luck with NGK) and I have to warm up an excessive amount of time now. I also get more pop on the downshift. Went back to the Original Champions last week (13kmi) and the dog ran great. All those plugs needed was to be cleaned and re-gapped.
     
    chubs likes this.
  16. Gas Man

    Gas Man Cool isn't cheap
    Supporting Member Calendar Participant

    Joined:
    Apr 8, 2007
    Messages:
    15,047
    Likes Received:
    237
    Trophy Points:
    63
    Location:
    Metro Detoilet
    chubs likes this.
  17. Buster03

    Buster03 Member

    Joined:
    Jul 28, 2010
    Messages:
    69
    Likes Received:
    3
    Trophy Points:
    0
    Location:
    Shawnee OK
    My Bike(s):
    2004 bull dog 2006 K-9
    First Name:
    Joe Mamma
    :flag::flag:I'm the same way about plugs I like Autolite.But if you think about S&S spent alot of money and time when they build engines and they say to run Champions so why do we just not stick with what they recommend after all they do build the engine. Just a Thought.
     
    chubs likes this.
  18. Ray

    Ray Well-Known Member

    Joined:
    Jul 27, 2009
    Messages:
    2,039
    Likes Received:
    397
    Trophy Points:
    83
    My Bike(s):
    2004 Ridgeback
    First Name:
    Ray
    Agrees with Buster . I found this out on my wife's ford truck as it is getting some age on it. If it didn't say Motorcraft on it, it would not run wortha crap, even though I do want some purple spark plug wires on my scooter,, :D.

    Ray :up:
     
    chubs likes this.
  19. gilmore42

    gilmore42 Member

    Joined:
    Sep 9, 2009
    Messages:
    35
    Likes Received:
    1
    Trophy Points:
    0
    Location:
    San Anonio
    My Bike(s):
    2006 Big Dog Pitbull
    First Name:
    John
    How often should we change our plugs? I have the 117ci.

    John
     
    chubs likes this.
  20. nine lives

    nine lives Active Member

    Joined:
    Jan 7, 2010
    Messages:
    888
    Likes Received:
    37
    Trophy Points:
    28
    Location:
    Reading PA
    My Bike(s):
    2006 big dog mastiff 1992 harley softail 1996 Kawaski gpz 1100 1983 YamahaIT 490 1997 Kawaski KX 500
    I change mine once a year.
     
    chubs likes this.

Share This Page