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xs650 > > Parts Needed > > Performance Parts > > iridium spark plugs |
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snapcasezx3 Full Member
Joined: Mar 22, 2008 Posts: 19 Location: Portland, OR
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Posted: April 8, 2008, 3:21 pm Post subject: iridium spark plugs |
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Are the iridium spark plugs on Mike's really worth it. My friend and I are having a discussion about this.
thanks
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tracker79 Full Member
Joined: Apr 04, 2006 Posts: 162 Location: Indiana
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Posted: April 8, 2008, 4:11 pm Post subject: Re: iridium spark plugs |
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Never tried them, been running the same Champions for two years now.
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mo650chopper WebMaster
Joined: Mar 13, 2005 Posts: 544 Location: Lonedell, Missouri
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Posted: April 8, 2008, 6:48 pm Post subject: Re: iridium spark plugs |
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I put a pair in a few weeks ago. I don't know if I can "feel" a difference in power but my average mileage seemed to improve by 3 0r 4 MPG.
_________________ Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body. But rather
to skid in sideways, hand grip in hand, body thoroughly used up, totally worn out and screaming "WOO-HOO what a ride!" |
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ponyjr Full Member
Joined: Jul 30, 2007 Posts: 32
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Posted: April 9, 2008, 9:12 pm Post subject: Re: iridium spark plugs |
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unless your carbs are dead on dont use them because they fuel foul easy. i had a set on mine but im running rich. ruined them in 20 min.
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XSAndy 650Rider Supporter
Joined: Jun 21, 2007 Posts: 37 Location: Sydney, Australia
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Posted: April 10, 2008, 12:24 am Post subject: Re: iridium spark plugs |
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I disagree with ponyjr. I put some in my bike. The original plugs were black suggesting an over rich mixture but the new ones have the perfect colour. I think the problem may be elsewhere and not with the plugs. So far I think they are great. Was it at Mikes that the dyno work was done. Saw something somewhere that suggested a 2HP difference. I'm sticking with them.
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nobradovic Full Member
Joined: Jun 25, 2008 Posts: 17 Location: Belgrade, Serbia, Europe
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Posted: March 19, 2009, 9:27 am Post subject: Re: iridium spark plugs |
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There is a difference with iridium spark plugs only. But...
DellOrto carbs + KN filters + Boyer Electronic Ignition + NGK Iridium spark plugs = a lot of difference !!! Engine works more precise and rhythmic, perfect color of spark plugs... I'm quite sure, you will have a lot HP boost. Maybe 10HP in my opinion with this combination...
I recommend Iridium spark plugs anyway...
_________________ Nikola Obradovic
Yamaha XS650 Special '79 |
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dpmphoto Full Member
Joined: Apr 18, 2007 Posts: 485 Location: syracuse NY
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Posted: June 19, 2009, 8:55 am Post subject: Re: iridium spark plugs |
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I run iridium plugs and notice a difference in performance.BUy them u wont be sorry,unless your bike is junk they will do you right
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78xs Full Member
Joined: May 28, 2007 Posts: 14 Location: Prescott, AZ
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Posted: June 21, 2009, 4:02 pm Post subject: Re: iridium spark plugs |
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what gap do you use on the iridiums?
thanks, bob
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