Yamaha YZF R125 Forums banner

1 - 20 of 23 Posts

·
Registered
Joined
·
81 Posts
Discussion Starter · #1 ·
I heard from a friend today that if i replace the factory spark plug which i have with a new platinum one i will get
more acceleration and better torque for my R125.What is your opinion?Has anyone tried this?
 

·
Registered
Joined
·
3,268 Posts
I've heard the same from a mechanic friend. tho irridiium would be an improvement too :) and it's cheaper
 

·
Registered
Joined
·
762 Posts
Would it be a noticable difference ?
 

·
Registered
Joined
·
762 Posts
sweet, ya learn something new every day......ink go's to ebay.
 

·
Registered
Joined
·
3,268 Posts
not sure what type of spark plug we need, but i have just seen some for $2
 

·
Registered
Joined
·
686 Posts
you should see the state of my spark plug, it was fu*king dire.
 

·
Registered
Joined
·
712 Posts
The only time you will see an increase in power or torque from a spark plug, is if the old one is past it's service life, or of the incorrect temperature grade. Once the flame front is traveling within the combustion chamber it has done it's job. The only engines that are really finicky about spark plugs, are direct injected, as depending where the electrode sits it can mess up the swirl patterns.

The best thing about iridium plugs is they have a longer service life, and therefore your bike will keep running better for longer.
 

·
Premium Member
Joined
·
5,218 Posts
I put an iridium in mine. Considering we only have the one spark plug, the price increase from a standard, to an iridium NGK plug is hardly noticeable.
If it lasts longer great, if it makes any minute difference, then even better.
 

·
Registered
Joined
·
81 Posts
Discussion Starter · #13 ·
see the item's description:

tem specifics
Part Brand:Brisk
Carbon deposit:Reduced relative to standard plug
Intended use:HP gain
Typical Lifespan (non-racing):25K mile - 40K Km - 500-600 hours
Horsepower gain:3%Gap adjustment:not required
Torque gain:3%
Further ignition modification:Not required
acceleration increase:10-12%
Works in conjunction:w/ factory or tuned ignition
Fuel efficiency improvement:average 5%
Firing power:mproved by 20%
Electrode:Special 360-degree projective tip - SHAPE VARIES!
 

·
Registered
Joined
·
3,268 Posts
i supposed this, with a couple of other engine/performance mods could make quite a difference
 

·
Registered
Joined
·
558 Posts
I've got an iridium in mine too and it does me fine, been in for probably around 8000 miles and still going strong, yamaha recommend changing it every 7000 mile, so will have a check next time i can and see how it looks if batterd I'll get a new one :)
 

·
Registered
Joined
·
558 Posts
The only time you will see an increase in power or torque from a spark plug, is if the old one is past it's service life, or of the incorrect temperature grade. Once the flame front is traveling within the combustion chamber it has done it's job. The only engines that are really finicky about spark plugs, are direct injected, as depending where the electrode sits it can mess up the swirl patterns.

The best thing about iridium plugs is they have a longer service life, and therefore your bike will keep running better for longer.
+1
i looked into these plugs and found some people found it made things worse, because of its 360 degree head that it arcs to it has loads of little arks when it sprarks and not one massive one so if the coils wernt powerful enough to power the 360 heads it made it worse, this is just what i read so dont know if its true or if it would affect our bikes but if it was so good then why dont manufactures use it? just a thought, ill stick with my big spark iridium before spending so much on something that wont be noticed on our bikes :)
 

·
Premium Member
Joined
·
2,207 Posts
Yeeah, I'd go with Benji on this.
If iridium plugs really did up your horsepower, why would some random brand I've never heard of be telling you, rather than NGK themselves?
 

·
Registered
Joined
·
686 Posts
you guys are going to absolutely love my old spark plug. i will take pictures of everything i've pulled from my bike. it's a wonder the thing was even still working. oh wait...
 

·
Registered
Joined
·
81 Posts
Discussion Starter · #20 ·
+1
i looked into these plugs and found some people found it made things worse, because of its 360 degree head that it arcs to it has loads of little arks when it sprarks and not one massive one so if the coils wernt powerful enough to power the 360 heads it made it worse, this is just what i read so dont know if its true or if it would affect our bikes but if it was so good then why dont manufactures use it? just a thought, ill stick with my big spark iridium before spending so much on something that wont be noticed on our bikes :)
Circle of aftermarket mate....
 
1 - 20 of 23 Posts
Top