: Replacing plugs and plug wires...



Joey'sVee
11-02-05, 11:06 PM
Hey guys. I was thinking about replacing the plugs and wires when I put my new headers on. :yup: So I thought maybe you guys could help me by answering few questions...

1. Should I replace them? Just plugs or both?
2. What would I gain?
3. What kind of plugs and wires should I get?

I've done a search but still not sure which is best and I guess some of you have been riding around with new ones so I thought I would see what the feedback is after having them in for a while.

Thanks for your advice!!! :thumbsup:

Florian
11-02-05, 11:13 PM
Magnecor wires. Best on the planet.


F

heavymetals
11-02-05, 11:17 PM
Replaced the wires with Granatelli's and covered them with KOOL SOX.
Replaced the plugs with BOSCH 4 platinums.
I got everything from Mid America.

Link:http://www.madvet.com/

Ross Racing
11-03-05, 03:33 AM
I've always used NGK TR55 or TR6's with MSD Super Conducter wires. I am getting them for my V in a few days

HDMLNIUM
11-03-05, 06:25 AM
NGK TR55's in my V, I always use them..:thumbsup:

Bill

Joey'sVee
11-03-05, 10:08 AM
So what do I gain? If I spend that kinda money on plugs and wires I would like to gain something....HP, MPG, or something, ya know?

Thanks for the feedback!

TXSilverV
11-03-05, 10:16 AM
Joey,
We replaced mine as well. Not sure of any gain though as all of my work eas done at once. I gained over 100 hp but not sure if any came from new plugs and wires. Good luck on your header install.

Florian
11-03-05, 10:20 AM
zilch gain...but your bay looks nicer.

F

CTSVONFIRE
11-03-05, 11:37 AM
Those plugs are in a tight spot, too.

Joey'sVee
11-03-05, 12:11 PM
So no gains or any performance improvements, ey? If it's just for looks then I don't think I will do it for all that $$$ ya know? I mean my engine cover will hide them anyways I guess. I'm I missing anything? Thanks guys!

Any other opinions???

heavymetals
11-03-05, 02:19 PM
Well it is up to you.

I replaced all that stuff (and added the KoolSox) because I had to take it out anyway.

I hope you have before and after dyno #s to compare how much HP gain the headers got you.:canttalk:

HDMLNIUM
11-03-05, 02:47 PM
So no gains or any performance improvements, ey? If it's just for looks then I don't think I will do it for all that $$$ ya know? I mean my engine cover will hide them anyways I guess. I'm I missing anything? Thanks guys!

Any other opinions???

There is a hp gain, gap them at .045 for a n/a motor NGK TR55's and .040 for a power adder with NGK TR6's (supercharger, turbo, Nitrous)
Worth a few hp, really...:yup:

Bill

Mat347
11-03-05, 05:29 PM
I plan on replacing mine with iridiums when the time comes. The Denso's have a .4 mm electrode where the NGK is like .8(I think). NGKs are a little cheaper.
I've used both the Bosh 4+ and the NGK iridiums in my Acura. I liked the Iridiums better. Plus, you can spray with iridiums, something you can NEVER do with platinum.

EDIT: The NGK part # is TR55IX for $6.95 on their site, Denso's is IT16 and are 11.99 each on their site.

urbanski
11-03-05, 06:30 PM
i'd do whatever HDMLNIUM says :)
in fact, that's exactly what I did :)

CVP33
11-03-05, 08:37 PM
As soon as mine are due I'm replacing them. I believe that's at 100,000 miles. It'll be here sooner than you think.

Joey'sVee
11-03-05, 09:40 PM
i'd do whatever HDMLNIUM says :)
in fact, that's exactly what I did :)

Is this the correct plugs?

http://www.stealthperf.com/cgi-bin/store/8NGKW-TR55-8.html

Do they come gapped at 0.45? Also what kinda wires did you and HDMLNIUM use?

Thanks! :worship:

Joey'sVee
11-03-05, 10:15 PM
Replaced the wires with Granatelli's and covered them with KOOL SOX.
Replaced the plugs with BOSCH 4 platinums.
I got everything from Mid America.
Link:http://www.madvet.com/
I found the Granatelli's @ madvet and I think I found the right BOSCH 4s here...

http://www.boschusa.com/AutoParts/SparkPlugs/PlatinumPlus4/

If you do a vehicle finder and put our Vs in it looks like the part # is 4458 "PLATINUM+4 OE Plug is Platinum; Do Not Gap"

Can someone confim that part number? I guess we don't mess with the gap, right?

heavymetals
11-03-05, 10:30 PM
Try this:

http://www.madvet.com/shop?frame=2.14.3315

Joey'sVee
11-03-05, 10:35 PM
yeah but it says for C5 year 92-03. is the 4458 right...se my edited post #17. Thanks!

urbanski
11-04-05, 05:31 AM
bought mine at summit racing, the TR55 come gapped at .050....so i gotta buy a damn gapper tool LOL

urbanski
11-04-05, 05:34 AM
actually no i am wrong.
Plugs from thunderacing.com
http://www.thunderracing.com/catalog/?action=vshop&vid=17&pcid=102
they're on sale too :cool:

55 for NA, 6 for blown :)

Joey'sVee
11-04-05, 09:51 AM
Thanks....I'm trying to decide between the TR55 & the BOSCH +4s. I'm trying to confirm the part # for the BOSCH +4s (I think it's 4458).

Thanks!

Rey
11-04-05, 11:04 AM
#4458 is the part # for Bosche +4 plugs. I have about 175K miles on various vehicles with Bosche +4s. In some instances they replaced platinum plugs; and in all instances there was a marked improvement in idle smoothness.
As for a power increase, that is hard to feel. It is very minor.

Joey'sVee
11-07-05, 10:30 AM
Will I need to gap the BOCSH +4's or will they come ready to put in? I want a good wire set but really don't wanna spend $200, ya know?

Thanks!

Rey
11-07-05, 10:48 AM
You cannot regap the Bosche +4. Upon examination, you'll see why.
According to TPIS (also long-time personal friend), GM coils and wires are quite weak, and that weakness prolongs plug life.
There are several good substitute wire suppliers: Taylor, Magnecor, TPIS, etc. The only $200 wire set I know of is Nology, which is also a basic capacitive-discharge ignition system.

Joey'sVee
11-07-05, 11:21 AM
Is this the correct Magnacors???

http://www.lingenfelter.com/store/85259.html

Rey
11-07-05, 11:52 AM
I think so, but check with Lingenfelter. You will want to transfer the stock heat shields to the new plug wires.

trekster
11-07-05, 12:02 PM
Is this the correct Magnacors???

http://www.lingenfelter.com/store/85259.html Can you please post if they are because i'm also planning of replacing my plugs and plug wires.

urbanski
11-07-05, 12:19 PM
HDMLNIUM knows all :)
http://www.cadillacforums.com/forums/showpost.php?p=470004&postcount=4

trekster
11-07-05, 12:40 PM
HDMLNIUM knows all :)
http://www.cadillacforums.com/forums/showpost.php?p=470004&postcount=4
Thanks, are there plugs out there that don't require gapping them?

urbanski
11-07-05, 12:46 PM
beats me dude, i'm just buying a gapper....er, maybe I'll bring them to Houston, I'm sure my mechanical buddies will have one lol

Joey'sVee
11-07-05, 01:26 PM
To the best of my knoweledge...the BOSCH +4s do not need to be gapped.

Joey'sVee
11-07-05, 01:28 PM
What is a heat shield? My stock wires are just wires...they dont have SOX or anything. Should I also replace the coil wires?

heavymetals
11-07-05, 01:56 PM
The only coil wires to replace is the harness and connector and NO you don't want to go there!:thepan:

The plug wires have a metal heat shield on the spark plug end.

The KOOL SOX are neat, and necessary if the plug wires touch the headers.

Joey'sVee
11-07-05, 03:24 PM
I've done a search for the KOOL SOX on yahoo but couldn't find a place to purchase them....anyone got a link?

heavymetals
11-07-05, 04:19 PM
It was on the Mid America Corvette link I sent you.

http://www.madvet.com/shop?frame=1.14.2932

Luna.
11-07-05, 04:23 PM
urb,
On spark plugs...If you are running a power adder then go to the [NGK] TR6's and gap them at .040
Bill

Are these one range colder than the stock plugs?

Also, I thought that with maggies, you were supposed to gap them 5 thousands less then the stock gap, which I *thought* was .05.

Am I missing something?

Any thoughts would be great! :D

Florian
11-07-05, 05:53 PM
you may save some dough by going directly to magnecor....


F

Joey'sVee
11-07-05, 06:27 PM
Magnecor Direct 114

LPE = 59

So I guess it will be BOSCH +4's and Magnecor Wires...sound like a good setup?

HDMLNIUM
11-07-05, 07:29 PM
Are these one range colder than the stock plugs?

Also, I thought that with maggies, you were supposed to gap them 5 thousands less then the stock gap, which I *thought* was .05.

Am I missing something?

Any thoughts would be great! :D

You are not missing anything, .05 less for a power adder is right.
I say the best gap for our motor without any power adders is .045 so .040 would be just perfect with some NGK TR6's for your maggie motor. And the TR6 is a colder plug that loves supercharged motors...;)

Urb, Thanks my friend.... lol I don't know all, but I do know some... haha

Bill

Joey'sVee
11-07-05, 07:33 PM
I would go with those plugs but I don't have a gapper...so I guess I'll go with the BOSCH. From what I understand you don't need to gap those.