STEELMAN

The Vast Majority Of People On This Forum Swear By Ngk Tr55 Plugs.
My 2001 Ss Came With Denso Ptj16r15. I Think They Are The Double
Platnum.at Approx. 30000 Miles I Switched To The Tr55's.although I
Never Dynoed The Car With The Tr's, I Never Felt They Were As Good As The Denso's. At This Point Approx.65000 Miles The Original Plugs Look Better Then The Tr's. A Long Way To Get To My Question.
Does Any One Have Any True Data Or Empirical Proof That The Tr's Are Better? Or Is It They Are Cheap Which Seems To Be The Biggest Response. I'm Changing Them This Weekend. At This Point I'm Leaning To Denso Again.
Sorry About The Long Post And The Capitols

Steve Burger

iTrader: (33)

I use the Tr55s in everything. I also change plugs every 15K in the trucks and every 1-2 track visits in the Camaro.

The issue with the platinum plugs is that the ring blows off quickly at high RPM. This makes them no better than a standard plug and there is now a little platinum ring that need to float through the engine.

staringback05

iTrader: (8)

ac delco iridiums....never had any problems

STEELMAN

As I Expected. No One Really Has Any True Proof About The Tr55's. One Person Says It And The Rest Swear By It.

taintedmeat

iTrader: (1)

There's nothing to prove, Steelman. No one is saying the tr55's are better than a more expensive iridium plug. No one is saying they make any power over them. What people are saying, Steelman, is that tr55's are significantly cheaper than iridiums. That to most people, myself included, the added cost of iridiums is just not worth it at this time. That's the extent of them being "better", and why most of the people here use them. If you're happy spending a shitload on your plugs, and leaving them in for 50k+ miles, more power to you. I'd rather spend like 12 dollars and change them every 30k miles.

And if you're interested in "proving" anything I just said, go price some plugs.

STEELMAN

I Never Said Iridiums I Dont Know Where That Ame From. I Said The Stock Denso That Came In My Car. Ptj16r15
They Werent Iridiums.
What I Wanted And Sill Want But Doesn't Seem To Be Available Is The
Following.
Empirical Proof That The Tr55's Are Better.
You Seemed To Prove My Point By Mentioning Money As The Main Reason To Purchase Ngk's.

STEELMAN

Just A Thought, Where Do You Get 50000 Miles From My Post.
I Changes To Ngk At 30000. I Know Have 65000 And I Am Changing My Plugs. Your 50000 Mile Example Is A Non Issue

Steve Burger

iTrader: (33)

Buy what floats your boat. I run the NGK plugs cause they are cheap, they work, and I change plugs in street driven vehicles ever 15K. In the Camaro I change them ever 10 miles or less.

Show ne ANY plug with emperical proof that ir is better than any other. They are maintenance items like washer fluid if ya ask me.

STEELMAN

I Only Asked A Question. I Know What Every Body Writes On This
And Other Forums.
I Only Wanted To Know If Any One Had Done Testing Of One Against
The Other. As It Happens I Did'nt Think So. That Doesnt Mean I Wanted
To Be Correct. I Was Hoping To Learn And Be Informed. Not Here Not Now I Guess.
By The Way The Spelling Is Empirical

Steve Burger

iTrader: (33)

Not trying to be an *** or perfect at the keyboard. But, It's a spark plug.

Again, throwing about a 1.50 each in the trash, after I look at them, is a lot easier than 5.00+.

And, yeah there is a lot of heard mentality on the internet. Ultimately it's up to you as to what you use for plugs, NGKs are cheap and easy to get.

Nuff said? Good luck with whatever you use.

taintedmeat

iTrader: (1)

Read my post again. As I said, no one uses tr55's because they're "better". Well, I would say they're "better" than Bosch Platinums, but that's from experience. I don't have a complex algebraic equation to represent my experience I'm afraid.

toofless916

sheesh

RPM WS6

iTrader: (3)

You have capitalized every word in your post, and you're the one giving someone else a hard time about spelling/grammar?

As for your question, I've logged fewer misfires on a-tap (my scanner) using NGK TR55s gapped at .055" than the stock platinum plugs. That's the only proof I have.

staringback05

iTrader: (8)

ive worked on these motors, the TR plug is a slightly colder plug then the ac delco's.....this will sometimes effect the idle and burn....but it wont hurt the motor and there is no significant difference imo

STEELMAN

staringback 05 i took your suggestion and went with the ac delco iridiums.
i also decided to put the original wires back on.i took off the msd 8.5's.
rpmws6 did the capitols really bother you that much? i apoligized about them in
my first post. again i was looking for test results not opinions! you act like wanting
proof or test results is a bad thing.

RPM WS6

iTrader: (3)

I gave you test results, sorry if they were not good enough.

Running misfire logs (with a-tap), the stock platinums produced more random misfires than the NGK TR55s, all else being equal (even as the NGKs aged, they still ran better). However, I have not tested the ac delco iridiums.

Not sure what else to tell you. I can't speak about a direct dyno comparison, but that doesn't make the results any less valid......