Forum

[73a]

Yes the bullet has bother mk3 ignition for 15 years and has only had smooth rpm since Iridium spark plug fitted.

[PeteF]

Are they better? I dunno.
What I do know is there's a lot of money spent needlessly replacing sparking plugs.
I have quite a few engines (some 2 strokes) that haven't had a plug changed in ten years.

[Wheaters]

All I can say is what I said before - I tried one as a slightly extravagant experiment because I felt my bike probably needed a new plug to make the idle more reliable (it has TCI ignition so probably has the ability to produce a very good spark anyway). It has unexpectedly improved the bike's running all round. Hopefully I'll not have to buy another plug for a very long time, if ever.

[Nitrowing]

Are they better? I dunno.
What I do know is there's a lot of money spent needlessly replacing sparking plugs.
I have quite a few engines (some 2 strokes) that haven't had a plug changed in ten years.

I can't remember the last time I've had a spark plug cease working.
I also have a sneaky suspicion that if people had just put a brand new 'normal' plug in it would have felt better anyway

[Wheaters]

Possibly but the effect was noticeably more marked than the when I changed the plug the previous time. I think this is a case of “don’t knock it till you’ve tried it”.

[Cranky]

Its all in yer ead .

Some psychological experimentation needed here perhaps washing the bike might help you. Ive heard it does.

Maybe a quartz headlamp can pierce the way in the dark not to mention the plethora of fuel additives .

Its all in yer ead Wallace.

[Nitrowing]

A dyno run would show the efficacy of an iridium plug.
Run with plug with over 5000 miles use.
New standard plug.
Iridium plug.

[Wheaters]

Its all in yer ead .

Some psychological experimentation needed here perhaps washing the bike might help you. Ive heard it does.

Maybe a quartz headlamp can pierce the way in the dark not to mention the plethora of fuel additives .

Its all in yer ead Wallace.

Really? I take it that you already tried one and found no difference.
I’ve enough experience to sense what’s snake oil and what isn’t.

Btw, you’ve been on the forum just two weeks and your post is offensive.

[Nitrowing]

Btw, you’ve been on the forum just two weeks and your post is offensive.

...and that's my job!

[trophyvase]

What a strange line of thought this thread has produced!

By the nature of the case a spark plug of itself cannot increase power. It provides a spark. That spark may be weaker or stronger – either way a spark causes combustion of the fuel charge. The spark cannot determine the power produced by that combustion. The potential of combustion is affected by volumetric efficiency and/or thermal efficiency. Neither of which are affected the type of spark plug - so long as the spark plug sparks!