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Main Area => General GS500 Discussion => Topic started by: metallic5spd on May 10, 2006, 10:58:15 AM

Title: spark plugs
Post by: metallic5spd on May 10, 2006, 10:58:15 AM
what spark plugs do you guys recommend.  i want realy good ones, dont care how expensive,  i have bosch +4's in my car and love them
Title: Re: spark plugs
Post by: onefastgs500 on May 10, 2006, 11:11:37 AM
regular ngk only nothing else
Title: Re: spark plugs
Post by: goat on May 10, 2006, 11:30:26 AM
I thought the same thing for a while, and ended up getting NGK Iridiums thinking that $$$=better. My bike never ran well with them, and as soon as I replaced the Iridiums with new NGK standard plugs it ran much better.

Check out this post for part #s (http://gstwins.com/gsboard/index.php?topic=12818.0)
Title: Re: spark plugs
Post by: LimaXray on May 10, 2006, 11:33:52 AM
Some people have problems with the stock NGKs being too cold and causing fouling after a rejet and use Champion 809's with great success.  I haven't had any problems with the stockers, but if I do I will try both the Champions and a heat range or 2 hotter in the NGKs. 

NGK's are the best plugs IMO, followed closely by Bosch.  I switched from Bosch platinum's to copper NGKs in my car and will never go back.  Not only do they perform better, they are also dirt dirt cheap.  More $$$ does not mean better.  I think the multi electrode plugs are just silly because the arc will always jump to the one closest electrode and never to the rest.  Maybe there's some benefit, I don't really know.  If your car is turbo'd I'd highly recommend not using the multielectrode Bosch plugs because I have heard a couple stories of an electrode breaking off, getting blown out the exhaust and destroying the turbine wheel.   
Title: Re: spark plugs
Post by: Onlypastrana199 on May 10, 2006, 01:28:53 PM
Everyone is gonna have an opinion on this, its brand loyalty. My honda's ran horribly with NGK's...i swore them off forever. My dad runs NGK's in his Harley, but I only use autolites with the copper core. Only thing that seems to work in my GS and Hondas.
Title: Re: spark plugs
Post by: onefastgs500 on May 10, 2006, 01:45:09 PM
you people can argue till your blue in the face jap vehicles are designed to run on ngk or nd ,german/swede get bosch ,general motors get ac delco,fords get motorcraft,and never screw a champion plug in anything but a chrysler product-harley or lawnmower,if the heat range is wrong for a rejet go up or down but stick w/ the plug that your product was designed for.
Title: Re: spark plugs
Post by: scratch on May 10, 2006, 02:17:51 PM
Is it because of the threads?
Title: Re: spark plugs
Post by: Alphamazing on May 10, 2006, 02:29:58 PM
Quote from: scratch on May 10, 2006, 02:17:51 PM
Is it because of the threads?

And the way they are connected to the coils.

I tried some plugs from AutoZone (AC Delco, I think? I forget) and the spark plug cap wouldn't go over the plug. Then the guys at AutoZone made ME fish through the trash to get my plugs back. I'm not going there ever again.
Title: Re: spark plugs
Post by: scratch on May 10, 2006, 02:32:25 PM
Sometimes there is a sleeve threaded onto the top of the sparkplug; was that there?
Title: Re: spark plugs
Post by: Alphamazing on May 10, 2006, 02:37:06 PM
Quote from: scratch on May 10, 2006, 02:32:25 PM
Sometimes there is a sleeve threaded onto the top of the sparkplug; was that there?

Wasn't threaded, but form fitted on there. Couldn't get it off. It was more like a sleeve plus a silver ball on top, the plug cap wouldn't even go over the little silver ball.
Title: Re: spark plugs
Post by: JCH on May 10, 2006, 03:15:42 PM
Just some general info I thought was pertinent...

"A spark plug does not make your engine run hotter or colder. The terms hot or cold refer to the temperature of the tip of the spark plug itself. The plug must keep a temperature of, between 752 and 1652 degrees Fahrenheit. If it gets too hot it can fire off the air/fuel mixture at the wrong time. This can cause detonation and/or pinging which will put a hole in your piston... not good. If it gets too cold it will not burn off the carbon and fuel deposits on it's tip and the plug will foul out (stop working) not good either."

http://www.dansmc.com/sparkplugs1.htm
Title: Re: spark plugs
Post by: ajgs500 on May 10, 2006, 04:24:30 PM
All I've got to say is OEM plugs all the way, 6 years and running strong!!!
Title: Re: spark plugs
Post by: Phaedrus on May 10, 2006, 04:31:22 PM
+1 on the stock plugs for a stock engine / stock jetting. NGK 4929.  :thumb:
Title: Re: spark plugs
Post by: scratch on May 10, 2006, 04:38:26 PM
It's not DPR8EA-9?  (<--typed that from memory)
Title: Re: spark plugs
Post by: LimaXray on May 10, 2006, 04:47:11 PM
they're the same plugs, NGK just uses different numbering for the same plug

but yeah, unless you have a reason to use a different plug, stick with the stockers
Title: Re: spark plugs
Post by: Phaedrus on May 10, 2006, 06:02:20 PM
Yeah, the NGK DPR8EA-9 is now known as (and is the same thing as) the NGK 4929:

(http://i17.photobucket.com/albums/b68/phaedrusGS/ezout-tool.jpg)

Title: Re: spark plugs
Post by: joedude on May 11, 2006, 04:37:44 AM
I've been on NKG's for a season and a half now... no complaints


[threadjack] Nice set of Ezy-outs you got there Phaedrus! [/threadjack]
Title: Re: spark plugs
Post by: onefastgs500 on May 11, 2006, 04:41:11 AM
those aren't ezy-outs there dumbass reversal tools!!!!!!just kidding that is a nice set
Title: Re: spark plugs
Post by: canadian mike on May 11, 2006, 08:07:51 AM
I picked up the Iridium plugs from NGK.  Hope they work out.  Has anyone had any success with them?  I read that another member didn't like them.
Title: Re: spark plugs
Post by: bulletproofcycle on May 11, 2006, 10:33:04 AM
I use NGK IRIDIUMS on my 2004 GS500F and it runs great!

The idle was so much smoother after switching from a new set of regular ngk copper.

Because the centre is so FINE the spark is always sparking at the same place every time unlike a regular ngk which can more around on the large centre.

Plus the ground electrode is tapered to reduce quenching.

I will never go back to regular ngk's!  I've had the Iridiums for 11000 kms and they don't even show a bit of wear which is surprising as I usually drive at 7000 rpm to redline frequently.
Title: Re: spark plugs
Post by: weaselnoze on May 11, 2006, 10:42:41 AM
champion all the way!!!!  where are u srinath?
Title: Re: spark plugs
Post by: scratch on May 11, 2006, 12:35:33 PM
I'm tempted to try the Champions...and then the Iridiums, but cost-wise is probably going to preclude me from using either.
Title: Re: spark plugs
Post by: onefastgs500 on May 11, 2006, 01:06:39 PM
weaselnose did you replace your fine japanese twin engine with a 5 horsepower brigg & stratton?if not then why would you screw a champion sparkplug in it?do you see pro race teams on jap equipment with champion as a sponsor?does nascar run ngk's?have you ever seen a porsche with a champion in it?run the plug the manufacturer spent much money on r&d  development
Title: Re: spark plugs
Post by: LimaXray on May 11, 2006, 01:28:19 PM
I agree with you, when I think of Champion, I think of my lawn mower, but do a search for 'Champion 809', you'll see it's pretty common for people to run them in the GS because they just work well and often better then the NGKs

I don't think it's fair to judge a spark plug by where it's produced or whether the engine was designed for it.  Manufactures do not always use a product because it is the best, but rather because it is easiest and cheapest for them.  I have seen NGK plugs in Porsches and Audis/VWs, and I use NGKs in my Audi even though VAG suggests using Bosch.  Suzuki recommends NGK simply because they probably have a deal with NGK where they will recommend NGK plugs and NGK will give them plugs for cheap.

It's just whatever works best, and for some people the NGKs don't work well
Title: Re: spark plugs
Post by: weaselnoze on May 11, 2006, 01:43:15 PM
i run them cause thats what walmart carries!  :icon_mrgreen:  they've been just as good as the ngk's i had in there before. actually better (because teh ngks needed to be replaced haha).  srinath swears by them.  hey if they work then what the hell! why not
Title: Re: spark plugs
Post by: Phaedrus on May 11, 2006, 08:27:16 PM
Quote from: joedude on May 11, 2006, 04:37:44 AM
[threadjack] Nice set of Ezy-outs you got there Phaedrus! [/threadjack]

:laugh: Whatever. The photo was just to show the NGK box with the identification labels on it. Haha.
Title: Re: spark plugs
Post by: GeeP on May 11, 2006, 10:54:11 PM
Put some damned plugs in it and go for a ride.  ;)
Title: Re: spark plugs
Post by: joedude on May 12, 2006, 02:03:36 AM
Quote from: Phaedrus on May 11, 2006, 08:27:16 PM
Quote from: joedude on May 11, 2006, 04:37:44 AM
[threadjack] Nice set of Ezy-outs you got there Phaedrus! [/threadjack]

:laugh: Whatever. The photo was just to show the NGK box with the identification labels on it. Haha.

[edit] Drunken words removed... [/edit]

:cookoo:
Title: Re: spark plugs
Post by: ajgs500 on May 12, 2006, 03:03:33 AM
ummmmmmmmmm ok?????  :dunno_white: :dunno_white:
Title: Re: spark plugs
Post by: weaselnoze on May 12, 2006, 06:34:22 AM
Quote from: Phaedrus on May 11, 2006, 08:27:16 PM
Quote from: joedude on May 11, 2006, 04:37:44 AM
[threadjack] Nice set of Ezy-outs you got there Phaedrus! [/threadjack]

:laugh: Whatever. The photo was just to show the NGK box with the identification labels on it. Haha.

Quote from: joedude on May 12, 2006, 02:03:36 AM
Quote from: Phaedrus on May 11, 2006, 08:27:16 PM
Quote from: joedude on May 11, 2006, 04:37:44 AM
[threadjack] Nice set of Ezy-outs you got there Phaedrus! [/threadjack]

:laugh: Whatever. The photo was just to show the NGK box with the identification labels on it. Haha.

Dude.. I was complimenting your inventory of tools... take the compliment and appreciate it... good god man, cry me a freakin river :cry: :cry:

What's with everyone being sooo damn touchy these last few months???? I'm sorry that I have to be the one to say it. but you could all learn from Nick Villan... he can dish it out... but man can he ever take it... and that's the sign of a true GS'er... he believes in what he feels is right. The Baby GS is true and pure, in its original form... but can still be squidded to the max... but its still your GS. You guys need to RELAX and not freak out at the least little bump in the road... cause believe you me... if you get your butt hole all puckered up over something foolish like this.... you won't make it thru life with your A$$ intact.

mark my words

mallet out

in riches defense he clearly had a smiley face and a 'haha' in that same line.  i think he took it as a joke and responded as a joke.   now sorry but i feel that you joejude either didnt get that and lashed out for real, or you made a poor taste sarcastic post.  either way its bad.

Title: Re: spark plugs
Post by: joedude on May 12, 2006, 12:47:21 PM
Sorry guys... I was hammered...  :laugh: :laugh: :laugh:

t'was a long night at the bar  :cheers:

:thumb:
Title: Re: spark plugs
Post by: The Buddha on May 12, 2006, 01:56:20 PM
The region of the country may affect your spark plug performance ...
I think this NC and SC area is supplied by a factory in Mooresville NC ... Atleast NGK's come from there, I believe they make several brands ... including autolites ... but to different specs. NGK's from there have been nothing but crap. Champions are great, and after you get over my sig ... AKA black sparkplugs ... autolites worked fine in the virago.
Just what I been seeing.
Cool.
Srinath.
Title: Re: spark plugs
Post by: Egaeus on May 12, 2006, 03:21:09 PM
Quote from: onefastgs500 on May 10, 2006, 01:45:09 PM
you people can argue till your blue in the face jap vehicles are designed to run on ngk or nd ,german/swede get bosch ,general motors get ac delco,fords get motorcraft,and never screw a champion plug in anything but a chrysler product-harley or lawnmower,if the heat range is wrong for a rejet go up or down but stick w/ the plug that your product was designed for.
My Japanese Nissan Frontier was built in Smyrna, TN with a motor that was made in Mexico and came with Bosch Platinum plugs.