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Title: New Spark Plugs Make My Bike Run More Smoothly Post by: rule62 on February 24, 2009, 09:06:14 AM The title says is all. After almost 14,000 miles, I thought it might be time to replace the stock "champion" plugs. I went with NGK iridiums DPR8EIX-9. They've got the threaded tip to accept my plug wires, rather than the little nodule at the top. They also take a slightly larger socket (18mm, 3/4") than what the stock tool kit provides. The "-9" at the end means that they're gapped at .9mm from the factory. Our very own "Mad Scientist" let me know that there are a lot of duc enthusiasts that agree that .9 is the way to go. I just popped them in and away I rode. Low speed stuff is smoother. The transition from idle to throttle on, is night and day. It was getting kinda choppy before I changed the plugs. Got 'em on fleaBay for less than $7.00 a piece.
Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: Dietrich on February 24, 2009, 10:07:16 AM Toldja.
;D Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: Monster Dave on February 24, 2009, 02:10:17 PM I've got 22k on my monster now...and I'm not sure if as plug has been changed on any previous services or not....
My Bike's still running great though; aside from needing the idle adjusted a little so that when its cold it revs smoothly. ...I'm probably due for a tune-up. Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: Monster Dave on March 05, 2009, 07:40:04 AM Hey Ryan,
How hard was it to do a spark plug change on your Monster? Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: NAKID on March 05, 2009, 11:48:54 AM Serious? Dude, they're in a fairly easy are to get to...
Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: Monster Dave on March 05, 2009, 12:08:21 PM Serious? Dude, they're in a fairly easy are to get to... It's just something that I've never done before (in general). So gapping a plug and all that goes into it would be a new expierence. Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: DG on March 05, 2009, 02:32:57 PM Plugs in & out is really straight forward. Just don't install too tight. It doesn't take much. Gapping is easy but you need a feeler gage or a wire gage. The most improtant thing is making sure the new plugs have the same "reach". That's the length it protrudes into the cyclinder. Too long and the piston will hit it. Not good!
Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: Monster Dave on March 05, 2009, 02:49:18 PM Thanks for the tip! [thumbsup]
Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: NAKID on March 05, 2009, 05:48:39 PM Get some iridium plugs. Awesome performance and pre-gapped. Take the old ones out, put the new ones in. Done...
Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: Monster Dave on March 06, 2009, 07:47:54 AM Get some iridium plugs. Awesome performance and pre-gapped. Take the old ones out, put the new ones in. Done... Chris, is there a mfg name for those or a model number for the ones for the Monster? Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: Dietrich on March 06, 2009, 08:16:44 AM Dave, see the post that started this thread....Rule spells it out for all, same bike as you even....
Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: rule62 on March 06, 2009, 06:18:16 PM Here's where I got 'em. You'll need 2.
http://cgi.ebay.com/ebaymotors/1-NGK-IRIDIUM-IX-SPARK-PLUG-DPR8EIX-9-Honda-Yamaha-more_W0QQcmdZViewItemQQ_trksidZp1713Q2em153Q2el1262QQcategoryZ35595QQihZ019QQitemZ290275113658QQtcZphoto (http://cgi.ebay.com/ebaymotors/1-NGK-IRIDIUM-IX-SPARK-PLUG-DPR8EIX-9-Honda-Yamaha-more_W0QQcmdZViewItemQQ_trksidZp1713Q2em153Q2el1262QQcategoryZ35595QQihZ019QQitemZ290275113658QQtcZphoto) Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: Electron on March 14, 2009, 08:51:33 PM Sometimes all you need are some good plugs. [beer]
Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: Monster Dave on March 16, 2009, 05:53:48 PM Here's where I got 'em. You'll need 2. http://cgi.ebay.com/ebaymotors/1-NGK-IRIDIUM-IX-SPARK-PLUG-DPR8EIX-9-Honda-Yamaha-more_W0QQcmdZViewItemQQ_trksidZp1713Q2em153Q2el1262QQcategoryZ35595QQihZ019QQitemZ290275113658QQtcZphoto (http://cgi.ebay.com/ebaymotors/1-NGK-IRIDIUM-IX-SPARK-PLUG-DPR8EIX-9-Honda-Yamaha-more_W0QQcmdZViewItemQQ_trksidZp1713Q2em153Q2el1262QQcategoryZ35595QQihZ019QQitemZ290275113658QQtcZphoto) Thanks for posting this up Ryan! Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: NAKID on March 16, 2009, 06:16:45 PM Thanks for posting this up Ryan! The link he posted will save you about $.50 over buying them at the store... Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: Monster Dave on March 16, 2009, 08:14:41 PM The link he posted will save you about $.50 over buying them at the store... Actually, when I priced them at Checker Autoparts this evening, they were almost $20 EACH - so the ebay store saved a lot of money!!! Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: NAKID on March 17, 2009, 03:28:53 AM Wow, Checker is WAY over-priced. Those plugs typically go for about $11 each...
Title: Re: New Spark Plugs Make My Bike Run More Smoothly Post by: Monster Dave on March 17, 2009, 07:08:43 AM I was suprised that they were so expensive, so I jumped on the ebay deal. Even with shipping, it was cheaper than buying 1 from Checker. Is there an alternative air filter (something generic) that's cheaper than the $65 K&N filter for a replacement?
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