Spark plugs

Energy One
Moespeeds

Moespeeds

Well-Known Member
Do the 107's and 117's use the same plugs? And why twin cam and not EVO? Just curious...Someone should sticky this!
 
LDO

LDO

The Cleaner
Troop Supporter
That's wierd because I have been using 4265s in my 107 since forever.:confused: :confused:
 
Raywood

Raywood

The Pirate
Staff member
Calendar Participant
Troop Supporter
Moespeeds said:
Do the 107's and 117's use the same plugs? And why twin cam and not EVO? Just curious...Someone should sticky this!
Click to expand...
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:
 
Raywood

Raywood

The Pirate
Staff member
Calendar Participant
Troop Supporter
Moespeeds said:
So what can we use in the pre-2005 motors?
Click to expand...
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
 
john sachs

john sachs

Well-Known Member
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
 
john sachs

john sachs

Well-Known Member
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
 
coach

coach

Active Member
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.
 
mrthick71

mrthick71

Member
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.
 
B

Buster03

Member
: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.
 
Ray

Ray

Well-Known Member
Buster03 said:
: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.
Click to expand...
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:
 
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