You sound like limited knowledge period.A Beru plug that's better
Because it's 8-9 dollars per plug. Talk about A WASTE OF MONEY.
Sorry, Your beru plugs are not worth the money. They saw you coming. and put a wrapper on your head Another
gimmick to get a pee-on like you to buy them. You probably
removed Split fires. Ngk's makes a quality plug. And sells ten thousand
to 1 more than "Who" Silverstone. You have been sucked in.

 

Funny thats what I thought about you.Conduction? Something you
made up. Sorry not a word that applies. It's the conduction of the material. Stupid statement
I have a degree in Electronic's, It's conductivity,of the metal.
Most materials are not conductive. Your IQ is really showing
Better get an extra 8 BERU plugs, In case you run out.

 

You must be the guy that sleeps in the back of the class. You can't prove copper is better then silver. Do some research before you spout off and look ignorant. Just some of the responses and there are so many others I will not take up the time. Whoa engineer types like you asked the same question which is the better conductor?

Jan 24, 2002

Dear author,

My friend and I are both engineering students and we are having a slight disagreement, I was hoping that you can solve it..... what has the heighest conductivity in the electrical standpoint...ie the greatest number of free floating of electrons.... laboratory copper, gold, silver, or aluminum.... thx for your help...

Simon Raymond
- Radcliff, Kentucky, USA



--------------------------------------------------------------------------------
Jan 24, 2002

Silver. But copper is so very close and so much less expensive.


Ted Mooney, P.E.
finishing.com Inc. - Brick, NJ

 

while we are on the subect... i am having problems with my plugs. i recently put a large cam, stock ported heads, fast intake(90 mm). and my plugs keep craking on the the area the wire boot covers.(a/c delco stock) so i tried the tr 55 and didnt gap them and the car was missing all over the place. so i went back to gap em to .45 and seems much better but i give it a few days before i go through another set. any suggestions. the car made 435 missing....444.95 after gapping. untuned. i need to get it tuned. thanks in advance.

2002 ZO6

 

I put a set a stock set in my 02, but the Denso's I pulled out were gapped at 55-60 and the car ran stronger. It seems to run well w/the
gap at 0.040, but I'm going to buy a new set of Denso's and test again.

 

I changed plugs on my 02 Z at 50,000 miles and will never let it go that long again. I had to stand on the stock plugs, broke a couple just trying to get them out.

Plugs are cheap insurance. Used the TR55s as a replacement. Power diff, no. Peace of mind, yes.

 

Actually I am thinking of a header install sometime in the near future and also felt that this might be an excellent time to put in new plugs AND plug wires. No problems noted, but the car ('02 Z06) has 61K miles on it, so why not do it now instead of waiting for a problem?

And not to kick up a hornet's nest, but are any plug wires measureably better then others? Back in the olden days, I used to cut my own wires using solid copper core wire and the improvement was night and day. Of course, that was well before all the computerized equipment was underneath the hood to get screwed up by the RF chatter.

 

Yes it's a differant world from the days of cutting your own packard 530 solid wire. Our ignitions put out SO much more spark it's hard to get a missfire. Same for wire. So unless you mod engine, too increace cylinder pressure, the stock plugs and wire are fine. A tune up won't help unless you have a malfunctioning stock part. IMHO

Ric

 

Wires make a nice touch, don't expect much sotp difference.What you
do get is snappier start,better idle and maybe 1 mpg guess.
But on the otherhand I use the Jacob's wire and It will handle 1300
jolues and not roast. Where the stock wire would not handle that much
power. But when I use to run 65,000 volt coils they were a must have.
Reuse the sheilds too. but also some wires might be much,if any
better.
rough figures, the jacob wire figure's to deliver 50 to 75 more amps current
to plug. Thats whats your seeing jumping the gap any way, at
30k volts which is conserative

 

Same here!!

 

I'm just getting ready to start going through the Z, making sure everything is updated, fluids changed, etc. I planned on doing the plugs and have had good success with NGK's on other cars. The Corvette manual says spark plug gap should be .060. Is there any reason to gap at less than that, especially since each plug has it's own coil?

Thanks,
Steve

 

^ Steve I run HPDE's with my car and see high RPMs a bunch so I wanted to minimize the possibility of a high rpm misfire. The consensus on the forum is .050 to .060 is fine so I split the middle.

If you go with the new ACdelco plugs from GM they are iridium and come gapped at .040 w/ instructions not to re-gap b/c that can damage the iridium coating which gives them their long life. If you don't mind a little work stick with the NGK copper plugs and swap them every 30k or so.

 

Are you guys replacing the wires every time you change the plugs?

 

In my case, I only changed them for looks (I got the red ones).

 

my friend changed the plugs on my 02 Z06, that has 27k miles, i put the OEM replacement ac delco irridium 41-985, and magnecore 8.5mm wires. He wrote up a DIY at home

http://pages.infinit.net/vette747/SparkPlugWire

it is recommended to replace your wires, because during removal, you can break a wire (as in my case). Wires are cheap.. LPE sells them for $70 or something like that.

After plugs/wire replacement, i noticed a much better engine response, my car used to bog/stutter at 4000-6000rpm in 3rd and 4th gear. That is all gone now...

 

I just got my Z back from having the headers installed, and at the same time had MSD wires put on and those E3 spark plugs put in. Also had the front O2 sensors replaced and put on a new fuel filter.

Car runs MUCH better! Idle is much smoother, and a slight hesitation I had from a dead start is gone. I don't know how much the plugs and/or wires contributed to the whole result, but I have to say it was well worth doing all that at the same time. Car feels much stronger and I only have to use a fraction of the go pedal that I did in normal driving before the install.

 

Hi 02 batmobile -

I just replaced my stock plugs with TR55's while at LG putting on my headers.

The stockers were really worn - they were clean and nice and light brown, but the electrode was really "eaten away" on the plugs. They had 40k miles on them.

It was running fine and put 374rwhp on the baseline dyno run, but LGM recommended the TR55's so I went with them.

I bought a set of bosch plus-4's for my wifes's coupe, but after reading some of rangers advice from his racing experiences, I have not yet put them in the car.

I will eventually, but when you see a guy who runs at the track and takes meticulous notes on things like what plugs were in the car....well you tend to listen.

I agree - you will not see a performance difference unless your stock plugs are failing.

What most people don't understand about GM is that they are selling cars for profit, and they make decisions based on corporate input, not limited to the best engineering choices. They have to bow to pressures to make a car more civilized for the 90% of people who are waxers.

I don't look down my nose at waxers, they are an important part of the vette community. We need as many people as possible to BUY corvettes because if GM does not SELL corvettes, then they will stop MAKING corvettes.

The platinum or iridium or unobtanium plugs are not designed for higher performance, they are designed for the 100k service interval.

The stock airbox is not designed to be the best breathing intake, it is desinged to be the best compromise for intake noise, water resistance ,and performance.

Aftermarket tuners are not selling CARS, they sell PERFORMANCE.

Thus, if you have a reputable tuner (and I guess I think LGM is one...) and they recommend TR55's, I am not thinking I am smarter than the GM engineers, I just think that I am not bound by some corporate mandate and I can do what is right for me and my car.

I apologize for the soapbox diatribe - bu there has been a whole lot of these "so you think you're smarter than GM" posts on there lately...not that there is anything WRONG with that....

best regards -

mqqn

 

Nice post mqqn.

BTW...what gap does LGM recommend? I talked with them last week about a set of Pros, x-over & cats...while I remembered to ask about gaskets, I forgot to ask them about new plugs.

Thanks.

-Jay

 

Hi Jay -

I will call them today - I have to ask another unrelated question (need email of a guy I met while there...) so I will ask and post tonight.

best regards -

mqqn