Anyone tried NGK's Iridium spark plugs in an 1100 GS?
Recommended or a waste of time?
Your thoughts?
Regards Dave.
Recommended or a waste of time?
Your thoughts?
Regards Dave.
Iridium spark plugs
- Thread starter street_moto
- Start date
What are you expecting from them ? - an extra 30bhp, a transformation of the engine, the bike to run like new without a service, to make you a superior human being.
Forget the "they cost a fortune so they must be better" mindset.
It's a spark plug, it sparks the same spark as any other spark plug, no more no less.
Forget the "they cost a fortune so they must be better" mindset.
It's a spark plug, it sparks the same spark as any other spark plug, no more no less.
I tried them in my 1100 but didn`t notice any difference whatsoever. In fact, thinking back, I think the fuel consumption suffered......
Complete waste of money for a GS IMHO
Complete waste of money for a GS IMHO
Beetle2112
Registered user
A little bit off thread........I always figured a sparkplug was a sparkplug - until I got a set of Bosch Platinum plugs for my R100GS. Boy oh boy.
A very noticeable improvement. I fitted them in my subsequent airheads but never got round to finding them for my later oilheads.
The main thing I noticed was that the motor was smoother, with a better throttle response.
In my own experience I have usualy always fitted OEM components on my bikes and have never subscribed to 'special' air filters and exhausts etc. I fitted the plugs because the guy at motobins said if I didn't notice an improvement he would refund me the money......if I remeber they were only a couple of quid more than regular plugs.
A very noticeable improvement. I fitted them in my subsequent airheads but never got round to finding them for my later oilheads.
The main thing I noticed was that the motor was smoother, with a better throttle response.
In my own experience I have usualy always fitted OEM components on my bikes and have never subscribed to 'special' air filters and exhausts etc. I fitted the plugs because the guy at motobins said if I didn't notice an improvement he would refund me the money......if I remeber they were only a couple of quid more than regular plugs.
I got two sets cheap from e bay one for my r1150 gs and the other for my 1982 gsx1100 katana, to be honest on the gs with its modernish injection system and ignition there wasn't much difference if any.
On the kat with its carbs and older ignition system starting and tickover from cold is vastly improved and the bike seems to rev more cleanly.
Probably worth it on something older but not on a modern bike
On the kat with its carbs and older ignition system starting and tickover from cold is vastly improved and the bike seems to rev more cleanly.
Probably worth it on something older but not on a modern bike
plugs
used them on my 1150 ,gone back to standards,no differance,and cheaper.
used them on my 1150 ,gone back to standards,no differance,and cheaper.
Was only asking! 
Seen lots of adverts about them, complete with manufacturer's claims, whilst I ain't daft enough to expect massive improvements, thought there may have been a few out there who'd used them and noticed subtle differences, good or bad!
Thanks for the replies!
Regards Dave
D6
Registered user
used em for my VERY tuned bandit, lasted loads longer, the high comp motor killed standards, gs bm,s a bit basic to notice any improvement,,,good plugs though,i now use standards or brisk, did 4500 miles in 12 days on these and all ok, standards would be probably as good too
Stick with the recommended ones Dave... I had a set of Iridium ones in my 1150... no difference and no difference on the dyno either.. so I went back to standard 
alimey4u2
Registered user
They work well on single coil double fire systems ( two plugs one coil firing on exhaust & ignition stroke) where polarity changes from center electrode to side electrode. By work well, I mean last longer, that being their only real benefit..
You want longer lasting plugs you can't beat Nippon denso for a GS - Another benefit is they're far cheaper than the NGK's.
alimey4u2
Registered user
How often should you change them ?
What is the recommended interval between changing plugs on a Twin Spark ?
Cheers, Piggers
What is the recommended interval between changing plugs on a Twin Spark ?
Cheers, Piggers
motobiker
Registered user
12.000 miles. no different to single spark bikes.
I found my old 1100RT ran much better with new ordinary NKG’s every 5000 miles,
I put Iridium’s in my 1200 at 10k and it ran no better than the standard Bosch plugs I took out.
Sometime you win, sometimes you waste your money
I put Iridium’s in my 1200 at 10k and it ran no better than the standard Bosch plugs I took out.
Sometime you win, sometimes you waste your money
plugs
Same as a loud exhaust everyone thinks 'cos of the racket oh I'm going faster spend it down the pub definatly improves performance or so ,your listners will hear!. Always try a go faster strip down the side or if you can handle it one on both sides!.
dave ( I hate christmas) GS roll on2010
Same as a loud exhaust everyone thinks 'cos of the racket oh I'm going faster spend it down the pub definatly improves performance or so ,your listners will hear!. Always try a go faster strip down the side or if you can handle it one on both sides!.
dave ( I hate christmas) GS roll on2010
Last edited:
rudiemoto
Registered user
Iridium IX Spark Plugs are the most technologically advanced high performance plugs available.
Featuring a 0.6 mm iridium center electrode tip, they offer superior ignitability without sacrificing durability. The tapered ground electrode increases flame kernel expansion, while the superior heat range design is ideally suited to the demands of high performance environments.
Specially designed to meet the needs of serious enthusiasts, Iridium IX Spark Plugs offer outstanding acceleration, high fuel efficiency and long life. When you demand the most from your engine, rely on the proven performance of NGK Iridium IX Spark Plugs.
ihave used these for yrs there work fine and you can tell.
my bike would not leave home without them
Featuring a 0.6 mm iridium center electrode tip, they offer superior ignitability without sacrificing durability. The tapered ground electrode increases flame kernel expansion, while the superior heat range design is ideally suited to the demands of high performance environments.
Specially designed to meet the needs of serious enthusiasts, Iridium IX Spark Plugs offer outstanding acceleration, high fuel efficiency and long life. When you demand the most from your engine, rely on the proven performance of NGK Iridium IX Spark Plugs.
ihave used these for yrs there work fine and you can tell.
my bike would not leave home without them
motobiker
Registered user
It is or was common for a crowd of extras in acting to shout the word "rhubarb" repeatedly and in an unsynchronised manner, to cause the effect of general hubbub. As a result, the word "rhubarb" sometimes is used to mean "length of superfluous text in speaking or writing", or a general term to refer to irrelevant chatter by chorus or extra actors. The American equivalent is walla. Stage actors in the United States also use word "rhubarb" repeated asynchronously in a low or murmured tone to provide background voice ambience in crowd or party scenes. A variation of this is the repetition of the phrase "peas and carrots"
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