spark plugs - SV650.org

28-02-06, 01:28 PM

what do you recommend to replace my original spark plugs with. SV650S K4 2004

cheers

northwind · 28-02-06, 03:48 PM

Either exactly the same again, or Iridiums of the same spec, really. I use the Iridiums for the better cold weather starting, and because they deal better with bad fuel mixes (which my bike sometimes has, because I'm constantly muckign about with the induciton and exhaust). But there's good arguments for both.

28-02-06, 05:35 PM

ngk - cr8e (1275) or ngk - cr8eix (421

. (just looked in my catalogue) its the same ones for all SV's

NedSVS · 28-02-06, 07:27 PM

Only use NGK plugs if you are a fair weather only rider. They work perfectly but rust quickly, leaving a red/brown rust stain down the side of your front cylinder (from the drain hole that allows water that gets down to the plug to run out) and it looks a real mess

28-02-06, 07:28 PM

Quote:

Originally Posted by northwind

Either exactly the same again, or Iridiums of the same spec, really. I use the Iridiums for the better cold weather starting, and because they deal better with bad fuel mixes (which my bike sometimes has, because I'm constantly muckign about with the induciton and exhaust). But there's good arguments for both.

So you like the Iridium sparkys than? How long have you been using the Iridium sparkplugs? Do you think, in your opinion that they are worth the extra expense?
Cheers?

Sid Squid · 28-02-06, 07:57 PM

Quote:

Originally Posted by a1a

So you like the Iridium sparkys than? How long have you been using the Iridium sparkplugs? Do you think, in your opinion that they are worth the extra expense?
Cheers?

Embee reckons that the iridium plugs are of benefit, I've got my doubts, whatever, it's not the wrong thing to do.

northwind · 28-02-06, 08:09 PM

Quote:

Originally Posted by a1a

Quote:

Originally Posted by northwind

Either exactly the same again, or Iridiums of the same spec, really. I use the Iridiums for the better cold weather starting, and because they deal better with bad fuel mixes (which my bike sometimes has, because I'm constantly muckign about with the induciton and exhaust). But there's good arguments for both.

So you like the Iridium sparkys than? How long have you been using the Iridium sparkplugs? Do you think, in your opinion that they are worth the extra expense?
Cheers?

Well, I got them very cheap- so taking into accont the predicted plonger life, they'll work out cheaper than stock. Hopefully

But yeah, for me they've been worth it. To be fair, that's partly because of the fuelling mucking about I've been doing, and partly because my knackered old battery needed every bit of help it could muster to start after the bike had been out in the cold all day

As Sid says, it's not hte wrong thing- but not neccesarily the right either. For the sums of money we're talking about here- spread across the life of a set of plugs- I'm none too bothered if they're great or average, as long as they work

28-02-06, 10:29 PM

IMHO. for an standard untuned SV, they probably aren't worth the extra. They'll last a bit longer and be a bit more tolerant of changes in carburation etc. But it's better to keep the engine well tuned than rely on a set of plugs to mask any problems.

Shove a set of iridiums into a badly set-up motor and you'll probably notice the difference. Shove 'em into a well-tuned mill, and I really don't think you'd notice anything at all.

northwind · 28-02-06, 10:38 PM

Nah, even on a well-fettled motor there's a difference when cold starting.

28-02-06, 10:56 PM

Yeah, can't really disagree with that - but probably only if it's REALLY cold, and the battery is down on volts, or if the battery is going downhill.

All things being equal, the diffrence is quite small.

What they DO do is cover up deficiencies better.

28-02-06, 01:28 PM	#1
daddy_sperm Guest Posts: n/a	spark plugs what do you recommend to replace my original spark plugs with. SV650S K4 2004 cheers

28-02-06, 03:48 PM	#2
northwind Moderator Mega Poster Join Date: Jan 2004 Location: In the garage where I belong Posts: 17,082	Either exactly the same again, or Iridiums of the same spec, really. I use the Iridiums for the better cold weather starting, and because they deal better with bad fuel mixes (which my bike sometimes has, because I'm constantly muckign about with the induciton and exhaust). But there's good arguments for both. __________________ "We are the angry mob, we read the papers every day We like what we like, we hate what we hate But we're oh so easily swayed"

28-02-06, 05:35 PM	#3
Last Action Pimp Guest Posts: n/a	ngk - cr8e (1275) or ngk - cr8eix (421. (just looked in my catalogue) its the same ones for all SV's

28-02-06, 10:38 PM	#9
northwind Moderator Mega Poster Join Date: Jan 2004 Location: In the garage where I belong Posts: 17,082	Nah, even on a well-fettled motor there's a difference when cold starting. __________________ "We are the angry mob, we read the papers every day We like what we like, we hate what we hate But we're oh so easily swayed"

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28-02-06, 07:27 PM	#4
NedSVS Member Join Date: Mar 2005 Posts: 567	Only use NGK plugs if you are a fair weather only rider. They work perfectly but rust quickly, leaving a red/brown rust stain down the side of your front cylinder (from the drain hole that allows water that gets down to the plug to run out) and it looks a real mess

28-02-06, 10:29 PM	#8
Anonymous Guest Posts: n/a	IMHO. for an standard untuned SV, they probably aren't worth the extra. They'll last a bit longer and be a bit more tolerant of changes in carburation etc. But it's better to keep the engine well tuned than rely on a set of plugs to mask any problems. Shove a set of iridiums into a badly set-up motor and you'll probably notice the difference. Shove 'em into a well-tuned mill, and I really don't think you'd notice anything at all.

28-02-06, 10:56 PM	#10
Anonymous Guest Posts: n/a	Yeah, can't really disagree with that - but probably only if it's REALLY cold, and the battery is down on volts, or if the battery is going downhill. All things being equal, the diffrence is quite small. What they DO do is cover up deficiencies better.