Forcefed86

iTrader: (4)

Guess the thermal and electrical conductivity is better than copper or iridium.

Not that I'd expect a night/diy difference just curious.

http://www.summitracing.com/parts/bch-fr8ds

Realcanuk

I haven't used those, but I have been using Brisk Silver tip plugs for 3 years in my car. Silver is the best conductor out there. I don't usually mention it because all that happens is everyone says.....NGK....NGK...
I can tell you that these plugs are great. Great power, easy starting, and they last forever... each time I check them they look better than the last. LOL

A good description of the differences of silver vs others here...

http://www.briskusa.com/silver_spark...ng_spark_plugs

Forcefed86

iTrader: (4)

Thanks for chiming in. I was originally looking at the FR8DS because they were cheapish and resisted with an 8 heat range. But Apparently a Bosch “8” is the equivalent of an NGK 5. I can’t find any Sub $5 silver tipped plugs that are a low enough heat range.

Realcanuk

Don't know about those really. I'm using the GR14S which is equal to NGK 7. They are a few bucks more but they last longer, and to be honest with what is costs for these builds an extra 25 bucks on plugs doesn't bother me much. Lol

2JZFC

iTrader: (26)

Where do you buy these? I see them listed for $10.99 making them almost $70/set more than the copper NGKs.

Realcanuk

I am in Canada and my shop is a dealer for them. Not sure where is the best place to get them otherwise.

stevieturbo

Whilst Bosch do make good stuff...I'e never warmed to their plugs.

Always NGK or Denso for me. I've never had a problem with one and really dont see anything to make me change from them.

Forcefed86

iTrader: (4)

Only reason I can see is a resisted plug cooler than a 7 for the LS heads. Iridium can be had in cooler ranges, but that's really all I've found. Resisted plug boots seem to be the way to go if you need cooler than a 7 it seems. Summit sells them for around $4 each.

stevieturbo

What heat range can you not get in a resistor plug ?

Forcefed86

iTrader: (4)

NGK stops at 7 in a recessed, resisted plug.

stevieturbo

mmm do it doesnt.

I've used BCR8ES many times, although I've moved back to a 7 ( albeit Denso at the minute )

Forcefed86

iTrader: (4)

Don't believe you can get those in the US? Having trouble finding them anyway. Is that a 5/8 plug?

stevieturbo

It's just a normal 16mm hex, so 5/8" yea. Oddly it even lists as OEM for some Aston Martin....must be the cheapest part on such a car lol

But you can get anything you want, anywhere if you really want it.

We get **** all for anything LS here, everything needs bought from the US or abroad. And we pay plenty for it.

They're cheap plugs so shouldnt be that expensive even if you did have to buy from outside the US.

The likes of a BKR8EIX iridium isnt too expensive, although it's a regular nose plug, not recessed if that's what you're after

If you want to go to extremes....a friend loves these plugs in his 4cyl race engines. Well he uses NGK but same design, both bloody expensive.
Notion behind the electrode is that even in extreme conditions there should never be a risk of the electrode coming off

Forcefed86

iTrader: (4)

By the time I paid for shipping and all it would be much cheaper and easier to get the $3 boots is all I'm saying. Then I could use any of the 1.98 non-resisted recessed plugs readily available and cheap.

stevieturbo

Yep, it would.

The resistor thing is all about electrical interference....you could always try them without a resistor. They may be fine, or they may not.

Realcanuk

As I said I don't get into these plug talks much anymore, but it is just a fact that silver is the best conductor, and longest lasting material of all plugs. If they last twice as long, (and mine last more than twice) then the cost difference becomes minimal. You get less chance of spark blow out, and there are multiple tests showing power increases using them. Maybe its one of the many small details that allow my car to make more power than others I know with very similar builds. I don't really know that for sure.

Not sure why I am writing this because I have never had anyone on any forum agree, but I have had friends who have switched agree... LOL.

Whatever choice you make, I am sure it will work out great.

stevieturbo

Silver, copper, gold, iridium, platinum, unobtanium...the list goes on....the debate could go on.

But is there really any evidence one makes more power than another ?

And as the earth strap is still steel on many plugs, I really dont see how wear etc will really be any different.

Obviously precious metal plugs where both electrode and ground strap have precious metal tips...these will last longer.

The rest ? I doubt it. But then if plugs are cheap and easy to replace....that works for me.

If they were a ballix to replace, I'd be using platinum or iridium.

Realcanuk

Ok..... not sure why..... platinum and iridium are low on the scale for conductivity.

stevieturbo

Yet these are what all OEM's favour for modern engines whether low performance or high.

And indeed a few years ago when I enquired with NGK about what they thought best to use...they also said their iridiums. Or maybe that's just to sell a more expensive plug ?


I'm not saying I have the answers...but are all those people doing the wrong thing ?

Realcanuk

For stock cars, and to meet emissions, maybe not... for boosted higher performance builds...... I don't see the comparison.

Anyways... always nice to discuss, but I gotta run.