Do any of you have all the different part #'s for our trucks for sparkplugs by all the major brands?

I'm trying to get a cross reference going here.

FWIW: Silver is the best conductor of electricity, then copper, then gold, then platinum. Nology makes the Silverstones as seen here:

http://www.nology.com/silverdetail.html

They have a cross reference chart here as well:

http://www.nology.com/crossref.html

Here's some more info:

[code]Silverstone ™:
Part#: Types: (hot 4......8 cold) Heatrange
120 001 010 S1K 14mm, 0.7 reach, tapered seat, 5/8 hex 4-6
120 001 020 S2K 14mm, 0.7 reach, tapered seat, 5/8 hex 6-8
120 001 030 S3F 14mm, 3/4 reach, gasket, 5/8 hex 5-8
120 001 040 S5 14mm, 3/4 reach, gasket, 13/16 hex 5
120 001 050 S6 14mm, 1/2 reach, gasket, 13/16 hex 5-7
120 001 060 S7 14mm, 3-4 reach, gasket, 3/16 hex 6
120 001 070 S9 14mm, 3/4 reach, gasket, 3/16 hex 8
120 001 080 CS1K 14mm, 0.46 reach, tapered seat, 5/8 hex 4-6
120 001 090 CS2K 14mm, 0.46 reach, tapered seat, 5/8 hex 6-8
[/code]

Any reason why not to use these? The price isn't all that bad either (from about 8 bucks a plug).

I would appreciate all of your serious input please.

BfB

 

NGK TR6 4177
Autolite's are 103's

 

Guys check this out:



And concerning the Iridiums:

That was taken from Nology's Silverstone website.

BfB

 

Just talked to them at Nology. The S1K is what we want, and if we want a colder plug than the S2K is what you want.

I'm really considering ordering these and ditching the Torquemaster test. I know these will work in the truck, and if any performance gains are to be had I'm gonna find out!

They are $7.96 a piece and come out of San Diego. As you all know these are made by Beru for Nology.

Take care,

BfB

 

I don't know wbout the rest of you but I was always told by electrical teachers in school that gold was by far the best electrical conductor, especially over silver. I could be wrong, but that is what I was told.

 

Where does Iridium stand?

Someone's got his eyes on those

 

I was taught that Silver was. Although, my best friend was believing that it was Gold. Hmmm...

and from:

http://www.science.uwaterloo.ca/earth/waton/s002.html

Any electrical engineers on this board that has any background in metals conductivity?

BfB

 

I'm an electronics technician and have always been taught that gold was a better conductor than silver, followed by copper. Maybe the high voltage in an ignition system has something to do with the conductivity of the different metals. I think I'll research this a little now. Got my curiousity up!

 

Alright guys/gals, I researched and found this below (in order of highest and best conductivity):

Silver:

thermal conductivity 429 J/m-sec-deg
electrical conductivity 630.5 1/mohm-cm
polarizability 7.9 A^3
cost, pure 120 $/100g

Copper:

thermal conductivity 401 J/m-sec-deg
electrical conductivity 595.8 1/mohm-cm
polarizability 6.7 A^3
cost, pure 2.7 $/100g

Gold:

thermal conductivity 318 J/m-sec-deg
electrical conductivity 446.4 1/mohm-cm
polarizability 6.1 A^3
cost, pure 4400 $/100g

Iridium:

thermal conductivity 147 J/m-sec-deg
electrical conductivity 188.679 1/mohm-cm
polarizability 7.6 A^3
cost, pure 4200 $/100g

Platinum:

thermal conductivity 71.6 J/m-sec-deg
electrical conductivity 94.34 1/mohm-cm
polarizability 6.5 A^3
cost, bulk 1200 $/100g

Notice how Gold and Platinum cost basically the same in bulk (I do not know how old those cost #'s are, btw)? So us buying Silver plugs for their benefits and paying more here in the US than platinum is kindof funny.

In the US Bosch uses Platinum and not Silver, and in Europe they only sell Silver and not Platinum. Beru is just the opposite on the other hand, using Silver in the US and Platinum in Europe for their plugs.

Can you say MARKETING PLOYS! Still, silver is the best, but how much better than copper plugs are they when it boils down to it? Are we going to notice any difference since our ignitions might already be at their capacities?

BfB

 

I did a little mre research and German Sivler is the worst conductor of electricty, well I was just a kid when I read it.

 

I just looked up what "German Silver" is and found out that it is really "Nickel Silver" which is a combo of elements (man made basically).

Here's another resource showing Silver is top dog (German Silver is ranked very low for conductivity):

http://www.amm.com/ref/conduct.HTM

...read it, it's good info.

Oh, reread my post above since I added to it.

BfB

 

I stand corrected. In terms of relative conductivity, as compared to copper, silver is the better conductor at 106, followed by copper at 100, gold at 65, and platinum at 15. These values are given at a temperature of 20 degrees C. The temperature coefficient of resistance is .0034 for gold and .0038 for silver. Depending on the temperature of the spark plug (I have no clue as to what the operating temp may be?), the conductivity of gold could become closer to that of silver. Thanks for the stimulating conversation BfB!

 

Spark plugs are like belly buttons and opinions, everyone has one. I just swapped in NGK TR-6'sand they work fine. I couldn't find an additional Hp or throttle response, but the engine ran smoother. With new plugs, it should.

I prefer basic, heavy duty spark plugs for my engines. With a supercharged engine, a durable , colder plug is a plus. Autolites have been my favorites, based on their durability. The NGK's seem fine too. I've used many different types, but always returned to the basic plugs.

The flavor of the week isn't be someting that I am going to try, based on the difficulty of spark plug changing.

What is the melting point of Silver? I believe it is quite a bit lower than the other metals mentioned. Do blown (and nitrous) engines produce more heat? Definitely. I wouldn't want to end up with silver on the exhaust valve seats.

My .02

 

Silver is used EXTENSIVELY in a LOT of racing cars, and European racing teams believe big time in it. Also there are quite a few European cars running Silver plugs as standard equipment.

You're not going to melt the silver on these plugs by any means, LoL. They were designed to withstand high heat, NOS, S/C, Turbos, etc. They make these in cooler temperatures as well for our trucks, but it is not needed unless we're running da juice or additional power adders.

Here:

[code]Metal Melting Melting
Point °F Point °C

Silver,
Pure 1761 961

Copper 1981 1083

Gold,
24K Pure 1945 1063

Iridium 4449 2454

Platinum,
Pure 3224 1773[/code]

...remember, this is for the elements str8 out, not for a comparison of sparkplugs.

From Beru's website:

Platinum is extremely resistant to errosion as is Silver, and both will last longer than most others, but for conductivity and performance then silver is the way to go! If you're worried about price then stick w/ copper.

BfB

 

the problem is the amount of these precious metals used on the electrodes themselves. no one penny pinches on a good old copper plugs. how much platinum or gold is actually on that $5-$10 plug? silver is cheap, and if the same amount is used as is in a copper plug, i'd be willing to try it, and see how it holds up to high boost, and/or nitrous. one of the problems we have is, the cheap ground material being melted away, increasing gap and causing problems, not the fancy "designer metal" that caught our attention in the first place.