Spark plugs - ZR-1 Net Registry Forums

Tim · 08-19-2004

I would like to try the new iridium spark plugs in my 1990 ZR-1. However, they only come with a tapered seat and have no washer. Will these still seat in my heads using the torque specs found in FAQ even though they have no washer? Also, do I need to use anti-seize on the threads?

Thanks,

Tim

Wayne · 08-23-2004

Tim Said:try the new iridium spark plugs in my 1990 ZR-1. However, they only come with a tapered seat and have no washer
-------------------------

Hi Tim
Yes NGK does have the correct plug for the 90 as I have one also and just put some in mine W/washer. Go to NGK web site and click on part finder

http://www.ngksparkplugs.com/apps/de...000&country=US

I think its stock no. 6341
Hope this helps

We Gone · 08-23-2004

I am using Rapidfire #5 in both the 90 & 91

Tim · 08-24-2004

Thanks Wayne, got them ordered

thxalot · 08-26-2004

Any of you have knowledge on the difference between Denso Iridium plugs and NGK Iridium plugs? I know they are the same company, but are these plugs the same too?

I ordered a set of the Densos. Just over a C-note at Autozone. A little pricey, but I hear they are worth it.

-Burt

Wayne · 08-26-2004

Tim Said:
Thanks Wayne, got them ordered
____________________________

Your Welcome Tim, Anytime

Z Factor · 08-28-2004

Quote:

Originally Posted by Tim

Also, do I need to use anti-seize on the threads?

It can not hurt, especially when you are dealing with our type of engines.

Wayne · 08-28-2004

Tim wrote:
Also, do I need to use anti-seize on the threads?

Z Factor wrote:
It can not hurt, especially when you are dealing with our type of engines.

------------------------------------

Never-seize/ Anti-seize is a bad thing on shallow aluminum threads like plugs, as it allows you to over torque, thus stretch the threads in the head. Bad thing is you don't have a clue you did it till its too late.

A new tire man I used to change tires on our pump trucks started using Anti-seize. Normally when you tighten lug nuts with 1" drv. impact you just let it hammer till nut stops turning. all of a sudden we had a rash of one or two studs broken off a wheel here and a wheel there.
When we put 2 and 2 together and talked to the Manufacturer I learned allot of what not to do with the stuff

Just sharing something we learned the hard way :!:

Z Factor · 08-29-2004

Quote:

Originally Posted by Wayne

Z Factor wrote:
It can not hurt, especially when you are dealing with our type of engines.

------------------------------------

Never-seize/ Anti-seize is a bad thing on shallow aluminum threads like plugs, as it allows you to over torque, thus stretch the threads in the head. Bad thing is you don't have a clue you did it till its too late.

A new tire man I used to change tires on our pump trucks started using Anti-seize. Normally when you tighten lug nuts with 1" drv. impact you just let it hammer till nut stops turning. all of a sudden we had a rash of one or two studs broken off a wheel here and a wheel there.
When we put 2 and 2 together and talked to the Manufacturer I learned allot of what not to do with the stuff

Just sharing something we learned the hard way :!:

While I appreciate your story, using an impact wrench on lugs/nuts is a little different that a specific torque when installing plugs. As my mechanic once told me, when dealing with aluminum heads/engines, you don't want to risk a frozen bolt or plug. That isn't to say you must use it, but I stand by my original comment unless you know that GM specifically said not to use it.

Wayne · 09-03-2004

Z Factor Wrote:
While I appreciate your story, using an impact wrench on lugs/nuts is a little different that a specific torque when installing plugs. As my mechanic once told me, when dealing with aluminum heads/engines, you don't want to risk a frozen bolt or plug. That isn't to say you must use it, but I stand by my original comment unless you know that GM specifically said not to use it.
-----------------------------------------------------
Forget the story. You missed the whole point of the post.
(seez)misspelled
>Never-seize/ Anti-seize is a bad thing on shallow aluminum threads like plugs, as it allows you to over torque

You Stated:
>a specific torque when installing plugs

If you use Never-Seez Brand Anti-Seize you will not get a specific torque.
Per the factory Rep at (Bostik Chemical) Never-seez.

You Stated:
>I stand by my original comment unless you know that GM specifically >said not to use it.

When GM specifically wants something on a fastener they state it ie loctite #222. GM does not say Do Not Use Loctite #222 on this Fastener. Can you imagine how thick a service manual would be if they labeled everything with what not to use!

You Stated:
>As my mechanic once told me, when dealing with aluminum >heads/engines, you don't want to risk a frozen bolt or plug

Thats about as good advice as you can get. Just not with Never-Seez Brand never-seize.

I did some homework next post

08-19-2004	#1
Tim Join Date: Aug 2004 Location: ND Posts: 87	Spark plugs I would like to try the new iridium spark plugs in my 1990 ZR-1. However, they only come with a tapered seat and have no washer. Will these still seat in my heads using the torque specs found in FAQ even though they have no washer? Also, do I need to use anti-seize on the threads? Thanks, Tim __________________ THanks, Tim

08-23-2004	#3
We Gone Join Date: Apr 2004 Location: Atlanta, GA Posts: 2,170	I am using Rapidfire #5 in both the 90 & 91 __________________ Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold

08-24-2004	#4
Tim Join Date: Aug 2004 Location: ND Posts: 87	Thanks Wayne, got them ordered __________________ THanks, Tim

08-23-2004	#2
Wayne Join Date: Aug 2004 Location: Sacramento CA Posts: 22	Tim Said:try the new iridium spark plugs in my 1990 ZR-1. However, they only come with a tapered seat and have no washer ------------------------- Hi Tim Yes NGK does have the correct plug for the 90 as I have one also and just put some in mine W/washer. Go to NGK web site and click on part finder http://www.ngksparkplugs.com/apps/de...000&country=US I think its stock no. 6341 Hope this helps

08-26-2004	#5
thxalot Join Date: Jun 2004 Posts: 16	Any of you have knowledge on the difference between Denso Iridium plugs and NGK Iridium plugs? I know they are the same company, but are these plugs the same too? I ordered a set of the Densos. Just over a C-note at Autozone. A little pricey, but I hear they are worth it. -Burt

08-28-2004	#8
Wayne Join Date: Aug 2004 Location: Sacramento CA Posts: 22	Tim wrote: Also, do I need to use anti-seize on the threads? Z Factor wrote: It can not hurt, especially when you are dealing with our type of engines. ------------------------------------ Never-seize/ Anti-seize is a bad thing on shallow aluminum threads like plugs, as it allows you to over torque, thus stretch the threads in the head. Bad thing is you don't have a clue you did it till its too late. A new tire man I used to change tires on our pump trucks started using Anti-seize. Normally when you tighten lug nuts with 1" drv. impact you just let it hammer till nut stops turning. all of a sudden we had a rash of one or two studs broken off a wheel here and a wheel there. When we put 2 and 2 together and talked to the Manufacturer I learned allot of what not to do with the stuff Just sharing something we learned the hard way :!:

09-03-2004	#10
Wayne Join Date: Aug 2004 Location: Sacramento CA Posts: 22	Z Factor Wrote: While I appreciate your story, using an impact wrench on lugs/nuts is a little different that a specific torque when installing plugs. As my mechanic once told me, when dealing with aluminum heads/engines, you don't want to risk a frozen bolt or plug. That isn't to say you must use it, but I stand by my original comment unless you know that GM specifically said not to use it. ----------------------------------------------------- Forget the story. You missed the whole point of the post. (seez)misspelled >Never-seize/ Anti-seize is a bad thing on shallow aluminum threads like plugs, as it allows you to over torque You Stated: >a specific torque when installing plugs If you use Never-Seez Brand Anti-Seize you will not get a specific torque. Per the factory Rep at (Bostik Chemical) Never-seez. You Stated: >I stand by my original comment unless you know that GM specifically >said not to use it. When GM specifically wants something on a fastener they state it ie loctite #222. GM does not say Do Not Use Loctite #222 on this Fastener. Can you imagine how thick a service manual would be if they labeled everything with what not to use! You Stated: >As my mechanic once told me, when dealing with aluminum >heads/engines, you don't want to risk a frozen bolt or plug Thats about as good advice as you can get. Just not with Never-Seez Brand never-seize. I did some homework next post