haole_boySS

iTrader: (1)

Its known that you shouldn't use Platinum plugs in a high comp motor because the platium tip retains heat and can cause pre-ignition and detonation right??
Well, do the Iridium Plugs have the same heat retention properties as the Platinum plugs??

Andy

Nine Ball

iTrader: (38)

Just stick with the proven NGK TR55 or TR6 plugs. No need for that fancy metal plug crap. If you just have to blow the extra money on some spark plugs, get some Beru silver plugs.

But, I'd recommend not wasting your time on sparkplugs, there isn't any performance to be gained there with the LS1 since our ignition systems are so powerful and we always get a good spark.

Tony

haole_boySS

iTrader: (1)

Ok, thanks Tony. Another question..... It says the TR6 is for the jug, blower, or High compression setups. How high of compression before you go to the TR6 from the TR55?

Andy

steve2001sh

Iridium gives the best spark, because it has the highest melting point, and thereby the smallest tip (pointy things spark better). Like he said though, LS1 ignition is a beast anyway, so you don't need any extra. I use iridium, but it was just because I felt like it.

Colonel

When to go TR-6? Well, you won't hurt a thing by using them with stock compression. You'll compensate by adding a degree or two of timing advance. The only downside is that you'll be changing plugs a little more often. Generally, I'd go with TR-6s whenever detonation becomes an issue. You can't just base it on "this HP" or "this CR"." If you are running on the edge of detonation for the fuel that you're using then use the cooler plug. If you're forced to back the timing advance off too much (costing you power!) then use the cooler plug.

Moving to external engine..

C4VetteLS1

I had a problem with iridiums on a customers car recently. We put iridium nitrous plugs in his car and it immediately went 2-3 tenths slower on motor.....

We autotapped and its running in low octane mode and will not come out, runs like 19 degrees of timing all the time, swapped one step colder than TR6's back in and it immediately jumped back to hioctane mode and runs great..

robertbartsch

I Dont Understand The Censorship - Why Is This Moved - I Think It Is A Great Topic....

haole_boySS

iTrader: (1)

I just posted it in the wrong section, no censorship really.
I was just wondering if Iridium has the same heat retaining properties as Platinum. You shouldn't use the Plat because of the detonation with a hot plug in high compression motors. Is Iridium the same?
Tony, I could waste my money on much better things besides spark plugs.

WILWAXU

iTrader: (6)

shouldn't that statement end with "...and have."

after the heads I switched to TR-6's

Colonel

"I Dont Understand The Censorship - Why Is This Moved - I Think It Is A Great Topic...."

Robert, what the heck are you talking about? It WAS NOT censored (I think you might want to look that word up)....it was simply MOVED to the CORRECT section for spark plug discussions. And if someone posts a camshaft question in the external section I'll move it to the internal section. See how that works? That's not censorship, it's ORGANIZATION!

BTW, I think it's a good subject too.

Camaro SS 2002

[QUOTE=C4VetteLS1]I had a problem with iridiums on a customers car recently. We put iridium nitrous plugs in his car and it immediately went 2-3 tenths slower[QUOTE]

What the hell are iridium nitrous plugs? I use the NGK TR 55-IX iridium plugs and they are great, plus you don't have to change them as often as the copper TR55's. In a nutshell, the copper TR55's are good, the TR55 iridiums are better.

Camaro SS 2002

If you have an extra few dollars, definitely go with the NGK iridiums. They do not have to be changed as often as the copper NGK TR55's.

2002Z28SS

So I am a little confused now... Should I use the iridium NGKs or not? Also, I do not understand the difference between the TR55's and TR6s. What do you guys mean by running 'one step colder' and how does the spark plug affect the timing? Thanks

felton316

I've heard of a couple of the iridium plugs loosing their tip. It has something to do with the way they are welded to the rest of the plug.

99ssleeper

iTrader: (98)

So what is the difference between NGK TR55 "V-Power" and the TR55 "G-Power"?

I have the G-Powers, but all I see everywhere else is the V-Power plugs. Are the Gs platinum?


What is another good alternative to the TR55?

Schantin

iTrader: (6)

I had NGK iridiums on my old LT1 (because changing plugs on an LT1 is a royal PITA!! ) Anyhow, I didn't notice any gains, but the car ran smooth as new. The iridiums are rated better for longevity than the platinum plugs. So, if you want long lasting plugs, get iridium ones. If you don't mind changing them every 30K miles, save the coin and go for the standard plugs.
Hope this helps make your decision

Schantin
2002 Camaro Z28 M6

11 Bravo

iTrader: (3)

The V-Power plugs are copper, the G-Power ones are platinum. According to the box. I put in the TR55 G's in yesterday and they seem to work well.