HarleyTechTalk

Technical Forums => EVO 1340 => Topic started by: nmainehunter on October 06, 2023, 07:02:47 AM

Title: Iridiums for an EVO
Post by: nmainehunter on October 06, 2023, 07:02:47 AM
Does anyone run these in their EVO?
Title: Re: Iridiums for an EVO
Post by: Hossamania on October 06, 2023, 07:38:18 AM
A waste of money.
Stick with the stock HD plugs or an equivalent from one of the name brand manufacturers.
Title: Re: Iridiums for an EVO
Post by: Ohio HD on October 06, 2023, 07:50:48 AM
I have not run them in an Evo or TC, or any HD for that matter.

The main purpose of Iridium spark plugs is longer life. There is some advantages with the small center electrode, allowing a spark path with less voltage.
Title: Re: Iridiums for an EVO
Post by: 98s1lightning on October 19, 2023, 03:46:19 PM
I've got NGK R 

BPR5ES-11 in my evo, stock ignition and compression

20k and counting on those with no issues to my knowledge
Title: Re: Iridiums for an EVO
Post by: JSD on October 20, 2023, 11:18:01 PM
NGK i in all my motors
Title: Re: Iridiums for an EVO
Post by: HogMike on October 21, 2023, 05:45:02 AM
All my bikes except for one.
LOL
 :missed:
19727F8A-AD8E-4AF8-B349-B0704659150F.jpg
Title: Re: Iridiums for an EVO
Post by: guido4198 on December 04, 2023, 08:32:32 AM
NGK Iridiums in the '99 Evo motor in my'85 FXRS. Best plug I've ever run and that's based upon comparisons done while using the bike in a daily commuting situation. Same ride every day, close to 100 mi. roundtrip, every day, same route...mostly I-95 down here in Fla. Slight improvement in gas mileage was definitely observed. I routinely pulled them at 15,000 mi. "just because".
Necessary...absolutely not. I like to try stuff so over the course of the 39 yrs and 320,000 mi. I've ridden this bike...I've tried different things, just because.  :wink:
Title: Re: Iridiums for an EVO
Post by: thumper 823 on February 17, 2024, 06:42:10 AM
Whish ever plugs you use index them to the intake
Title: Re: Iridiums for an EVO
Post by: 98s1lightning on February 17, 2024, 09:15:10 AM

Quote from: thumper 823 on February 17, 2024, 06:42:10 AMWhish ever plugs you use index them to the intake
What material shims are you using for indexing
Title: Re: Iridiums for an EVO
Post by: Dan89flstc on February 28, 2024, 05:57:24 AM
Quote from: thumper 823 on February 17, 2024, 06:42:10 AMWhish ever plugs you use index them to the intake
Waste of time.
Title: Re: Iridiums for an EVO
Post by: fatbobber on April 06, 2024, 12:48:29 PM
I use Nology wires and matching silver plugs from Nology, always great results .
Had those wires and plugs tested on a Buell , years ago , the guy who worked the dyno said plugs don't do anything....that setup showed 3 solid horsepowers gain over the standard setup with Accel wires and NGK plugs . You don't have to believe me ,i know what the dyno said . I don't have the sheet anymore,it's to long ago but i do know they work .
Title: Re: Iridiums for an EVO
Post by: jsachs1 on April 06, 2024, 01:22:23 PM
Quote from: fatbobber on April 06, 2024, 12:48:29 PMI use Nology wires and matching silver plugs from Nology, always great results .
Had those wires and plugs tested on a Buell , years ago , the guy who worked the dyno said plugs don't do anything....that setup showed 3 solid horsepowers gain over the standard setup with Accel wires and NGK plugs . You don't have to believe me ,i know what the dyno said . I don't have the sheet anymore,it's to long ago but i do know they work .
And WHY do you think that happened ?  :nix:
John