Sparkplug what kind?


Information and questions on GL1200 Goldwings (1984-1987)
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SAILOR
Posts: 117
Joined: Sat Jan 01, 2011 11:24 am
Location: lakewood,wa
Motorcycle: 1984 honda goldwing

Sparkplug what kind?

Postby SAILOR » Mon Jun 06, 2011 7:19 am



I have a 84 GL1200. I'm going to put some new spark plugs in it. What plugs are people running? Also what is the gap size?

Thanks



dan1951
Posts: 106
Joined: Mon Oct 11, 2010 11:06 am
Location: armada mi. 48005
Motorcycle: 1985 gl1200a

Re: Sparkplug what kind?

Postby dan1951 » Mon Jun 06, 2011 7:33 am

The stock plug is of NGK brand which most riders stick with, The dealer should know the air gap I,m not sure if the gap changed from year to year.

mdreynolds
Posts: 1
Joined: Mon Jun 06, 2011 9:24 am
Location: Kenosha, WI
Motorcycle: 1985 GL1200 Interstate

Re: Sparkplug what kind?

Postby mdreynolds » Mon Jun 06, 2011 9:30 am

I decided last spring to try Bosch iridium plugs in my '85 GL1200 Interstate. A little over 3,000 MI on them since then and they have worked GREAT! The guys at the auto parts store can cross from the old plug (NGK #) to an iridium matching number if needed. Careful gapping as the iridiums have a small center electrode point and you could snap it.

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Mooseman
Posts: 383
Joined: Thu Sep 10, 2009 11:10 am
Location: Napa, CA
Motorcycle: 1996 GL1500SE 88k
1986 GL1200A (SOLD) 81K
1985 GL1200A (SOLD) 85K
1986 BMW K75c 25K

Re: Sparkplug what kind?

Postby Mooseman » Mon Jun 06, 2011 2:47 pm

I am currently runing the NGK Iridium DPR8EIX-9. The bike runs just fine on them but also ran fine with the stock plugs, NGK DPR8EA-9. Gap is 0.03 to 0.035 inch or 0.8 to 0.9 mm. The standard plugs with the copper core take less juice to fire than the iridium. That said, if you have a week battery or charging system, the bike may start eaiser on the standard plug. I may go back to the standard plug when it comes time to change plugs, for cost reason. The book says to change every 4k, I check my plugs every 4k to 5k at oil change. I don't see the need to replace at 4k running unleaded gas. Just my way. I did replace the last set after 10k. These only have 4k and are looking great so far.
Enjoy the ride. They are all good, just some better than others.
Mooseman

SAILOR
Posts: 117
Joined: Sat Jan 01, 2011 11:24 am
Location: lakewood,wa
Motorcycle: 1984 honda goldwing

Re: Sparkplug what kind?

Postby SAILOR » Fri Jun 10, 2011 6:27 pm

Mooseman,
Just went an bought those standard plugs we will see if it runs any better.

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Possum51
Posts: 262
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Location: Eatonton, Georgia
Motorcycle: 04 Harley-Davidson Road King

Re: Sparkplug what kind?

Postby Possum51 » Fri Jul 13, 2012 11:47 am

Just got the stock NGK for my 84 GL1200I and the new part number most parts store stock the under is NGK 4929 and the book lists the gap at .035
Rick.....

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Possum51
Posts: 262
Joined: Sun Jun 24, 2012 12:53 pm
Location: Eatonton, Georgia
Motorcycle: 04 Harley-Davidson Road King

Re: Sparkplug what kind?

Postby Possum51 » Fri Jul 13, 2012 12:52 pm

Well, good thing I decided to look at the spark plugs ( just bought the bike a month ago) because it had 3 champions and one NGK plug in it and the NGK was finger loose. The plugs didn't look real bad, but now I know it has the right plugs and they are gapped correctly and one of them isn't about to blow out and strip the threads. Bet'en I see an improvement in fuel mileage now too, it evens sounded better at least to me.
Rick.....

wrightwing
Posts: 71
Joined: Sun Jan 23, 2011 3:09 pm
Location: grove city ohio
Motorcycle: ''87 GL1200 Interstate''

Re: Sparkplug what kind?

Postby wrightwing » Fri Jul 13, 2012 9:09 pm

A clean car always runs faster !!!!!!!! :lol:


''NEVER TIME TO DO IT RIGHT, BUT ALWAYS TIME TO DO IT OVER''


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