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<  General Scootering  ~  Plug temp?
Tom Lindsay
PostPosted: Tue Sep 06, 2005 9:10 pm  Reply with quote
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So after the TNR I changed my plug and it made a big difference - just 550 miles on this plug, whereas the first one got 600 miles (during the breakin) and the second one got 1000 miles - and in both earlier cases I changed them for the hell of it.

I don't really care - they cost less than $3 - but I have been doing a lot of high-speed riding recently (prepping for Duluth), and I'm wondering if maybe I should be using a cooler or warmer plug than what I'm using. I'm running the standard Champion RN9YC. Basically, it was running pretty rough tonight and died twice on me (nothing too new about that), but also I was having trouble running the throttle very high in any gear. Not too bad, but noticably less power and rougher running than normal. With the new plug, the power came back to normal, it was running smoother, and it showed no signs of wanting to die.

Opinions?

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Brad
PostPosted: Tue Sep 06, 2005 9:50 pm  Reply with quote
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What color was the plug you pulled out, white, coffee with a little cream, or black?

Unless it was white (indicating a lean condition), I'd leave it alone and just bring along an extra plug. No sense tempting fate - plugs are cheap.

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Tom Lindsay
PostPosted: Wed Sep 07, 2005 6:54 am  Reply with quote
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Yeah, that was kind of my gut feeling. I'm going to have to look at the plug again to really describe it right. I've heard though that since Stellas have reed valves, plug readings are less useful than otherwise - I guess it's hard to get a meaningful measurement from a Stella without doing a real plug chop.

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Matty
PostPosted: Wed Sep 07, 2005 11:03 am  Reply with quote
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Don't know how Champion plug numbers work but with NGK the higher the number the cooler the plug. For a long wide open trip you could go for a hotter plug, but it's cooler out now so I would be a draw probably. For NGK a B 7 or 8 ES would work.

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nate
PostPosted: Wed Sep 07, 2005 11:49 am  Reply with quote
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Wait, don't you want cooler plugs for long drawn out rides, and hotter plugs for city stop and gos?
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Jeff
PostPosted: Wed Sep 07, 2005 11:50 am  Reply with quote
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That's what I always thought too. FWIW word on the street is the the champion 9 is in between a NGK 6 and 7 temperature wise, so a 6 might be acceptable as well (depending on your application and riding conditions of course).
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Matty
PostPosted: Wed Sep 07, 2005 11:58 am  Reply with quote
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If you're going wide open for a few hours you'd want a cooler plug.

http://www.scomo.net/product_info.php/cPath/14_40_42/products_id/277

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nate
PostPosted: Wed Sep 07, 2005 12:01 pm  Reply with quote
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Quote:
For a long wide open trip you could go for a hotter plug,


Quote:
If you're going wide open for a few hours you'd want a cooler plug.



You can see how I was confused. What did they do to you up in canada, man?
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Matty
PostPosted: Wed Sep 07, 2005 12:09 pm  Reply with quote
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[quote="nate] You can see how I was confused. What did they do to you up in canada, man?[/quote]

Heh sorry! took us 3 days to get home so I'm a little out of it! I'll take a 2 day break from answering any more questions now.

-m5

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Tom Lindsay
PostPosted: Wed Sep 07, 2005 12:13 pm  Reply with quote
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Hey, thanks for all the advice. I might experiment with a couple cooler plugs; but only with a stock of what I'm currently using in hand just in case...

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Tom Lindsay
PostPosted: Wed Sep 07, 2005 12:22 pm  Reply with quote
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Which raises the question: where can I get NGK plugs locally?

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Matty
PostPosted: Wed Sep 07, 2005 12:30 pm  Reply with quote
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Scooterville, any motorcycle shop and even a fair amount of auto part stores.

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Tom Lindsay
PostPosted: Wed Sep 07, 2005 12:38 pm  Reply with quote
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Really? Kickass. I've been using the LML-bagged Champions from Scooterville, but everybody I ask thinks Champion plugs suck, so I've been thinking about switching to NGK to see if they're right.

And hey, 100 posts!

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Derrick
PostPosted: Wed Sep 07, 2005 1:49 pm  Reply with quote
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Mr. Vespar uses Bosch platnium plugs in all his Vespars! They cost a little more but boy do they make a difference! My Vespars go really fffffffast! I keep a few extra in the glove box and change them about every 100 miles. The two strokers burn oil and cause regular plugs to "load" up fast but those platniums really keep clean and I can get more miles out of them ones. I also get the number 12's. They are the coolest running plug you can buy. No more seizing worries for me.
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Tom Lindsay
PostPosted: Wed Sep 07, 2005 2:13 pm  Reply with quote
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Derrick wrote:
Mr. Vespar uses Bosch platnium plugs in all his Vespars! They cost a little more but boy do they make a difference! My Vespars go really fffffffast! I keep a few extra in the glove box and change them about every 100 miles. The two strokers burn oil and cause regular plugs to "load" up fast but those platniums really keep clean and I can get more miles out of them ones. I also get the number 12's. They are the coolest running plug you can buy. No more seizing worries for me.


Okay, point taken, but surely you'd agree that I may get a better ride with a different temp plug for a long-distance ride. And I honestly don't know if there's much difference between brands, but people seem to strongly prefer NGK to Champion, so I thought I should try both back-to-back and see if I can tell the difference.

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