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:

spark plugs

Thread Tools
 
Search this Thread
 
  #1  
Old 12-03-2012, 08:52 PM
harrell42's Avatar
harrell42
harrell42 is offline
Advanced
Thread Starter
Join Date: Sep 2012
Location: mc rae ga 31055
Posts: 52
Likes: 0
Received 1 Like on 1 Post
Default spark plugs

i read in a bike magazine that if you rounded the tip of your spark plug and set it about 2 thousands wider gap it would run better. anybody tried this i was going to try it any suggestions
roller
 
  #2  
Old 12-03-2012, 09:02 PM
mkguitar's Avatar
mkguitar
mkguitar is offline
Extreme HDF Member
Join Date: Sep 2010
Location: Phoenix '53, '88, '09 Big Twins
Posts: 14,744
Received 398 Likes on 340 Posts
Default

in general- the widest gap possible is better...but too wide and it'll not fire...

and our modern ignition systems look for a certain amount of resistance in the plugs and wires, otherwise the computer may think that a misfire is occurring and retard the timing...

resulting in reduced power and MPG.

or start throwing codes


highly tuned race motors and street motors are different animals


our street bike ignition systems are really really good, light years ahead of just 20 years ago.

unless you have specific needs and a way to measure results, you may do best to leave it




Mike
 
  #3  
Old 12-03-2012, 09:15 PM
Glockmeister's Avatar
Glockmeister
Glockmeister is offline
Ultimate HDF Member
Join Date: Jul 2012
Location: Northwestern Nevada
Posts: 5,282
Likes: 0
Received 2 Likes on 2 Posts
Default

I've never heard of that, and while it might be a cool thing for YOU to try and report back to us on, I think I'll just leave my plugs set at recommended gaps and configuration.

In all seriousness, if you do try it, let us know what happens and whether you voided your warranty
 
  #4  
Old 12-03-2012, 09:21 PM
fabrik8r's Avatar
fabrik8r
fabrik8r is offline
Outstanding HDF Member
Join Date: Jan 2010
Location: earth
Posts: 2,916
Likes: 0
Received 31 Likes on 21 Posts
Default

Google "side gapping"
 
  #5  
Old 12-03-2012, 09:26 PM
harleycharlie1992's Avatar
harleycharlie1992
harleycharlie1992 is offline
Unofficial HDF Chaplain
Join Date: Dec 2009
Location: san diego
Posts: 20,966
Received 16,083 Likes on 5,007 Posts
Default

Originally Posted by fabrik8r
Google "side gapping"
used to do it on my 396 chev motor, hard to tell if it was better, it had a little under 600 hp!! sure it didn't hurt!!
 
  #6  
Old 12-03-2012, 09:43 PM
btsom's Avatar
btsom
btsom is offline
Grand HDF Member
Join Date: Jan 2012
Location: Oklahoma
Posts: 4,025
Received 768 Likes on 521 Posts
Default

A "rounded" center electrode is one of the descriptions of a worn spark plug. While the manufacturers may be trying to sell more spark plugs, they continue their explanation by saying that crisp edges on both the center and side electrodes promote an easier, better spark and that worn, round surfaces require more voltage to fire. Many people believe they feel the engine running better with new spark plugs. Aside from some accumulation of combustion deposits, the only real difference between new and well used plugs is the erosion which has happened to both electrodes thus rounding them and widening the gap. If you wish to "pre-wear" your plugs before installing them, it is your call.
 
  #7  
Old 12-03-2012, 10:04 PM
fabrik8r's Avatar
fabrik8r
fabrik8r is offline
Outstanding HDF Member
Join Date: Jan 2010
Location: earth
Posts: 2,916
Likes: 0
Received 31 Likes on 21 Posts
Default

I'm not talking about pre-eroding your spark plugs, it's basically trimming back the ground strap to help "unshroud" the spark.
 
  #8  
Old 12-04-2012, 12:40 AM
AlaskaAviator's Avatar
AlaskaAviator
AlaskaAviator is offline
Road Captain
Join Date: Dec 2009
Location: New Mexico
Posts: 570
Likes: 0
Received 3 Likes on 3 Posts
Default

two thousandths is pretty hard to feel. Doubt many here could do it.
 
  #9  
Old 12-04-2012, 01:03 AM
drukanfu's Avatar
drukanfu
drukanfu is offline
Supporter
Join Date: Aug 2008
Location: N.E. Wisconsin
Posts: 5,189
Likes: 0
Received 16 Likes on 6 Posts
Default

Try these instead !

http://www.pulstar.com/
 
  #10  
Old 12-04-2012, 04:14 AM
harrell42's Avatar
harrell42
harrell42 is offline
Advanced
Thread Starter
Join Date: Sep 2012
Location: mc rae ga 31055
Posts: 52
Likes: 0
Received 1 Like on 1 Post
Default

thanks for input, think i will try the pulstar pulse plugs. has any body tried them
thanks roller
2011 ultra limited 103.
 


Quick Reply: spark plugs



All times are GMT -5. The time now is 11:28 AM.