This is topic Spark plug question - in forum F-Body: Technical Forum at www.chirpthird.com.


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Posted by Hawkeye (Member # 88) on :
 
My car is 5 years old - approx. 12,500
miles.

I'll be putting headers on this fall and am
wondering about the plugs.

1) Should I replace due to age - doubt if they're
worn.

2) Just keep with stock GM plugs

3) Get aftermarket plugs - if so which ones?

Any suggestions?

[ 07. October 2003, 10:58 AM: Message edited by: Hawkeye ]
 

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Posted by 2002Z4CSS (Member # 1393) on :
 
Brian,it could not hurt to change them,since you may need to remove them to get the headers in and out.The key is to remove all of them and reinstall them even if they are the old spark plugs since you do not want the plug to seize into the aluminum cylinder head from time.
 

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Posted by poSSum (Member # 119) on :
 
I've had stock and Champion copper and now have the NGK Iridium plugs in. Didn't notice any difference and contrary to what some have experienced, my stock plugs had all the "pucks" on and were evenly gapped.

I'll second Greg's recommendation to R&R and use anti-seize.
 

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Posted by Hawkeye (Member # 88) on :
 
I was thinking along the same lines - just due
to time - R & R - and I have not seen anyone
post that there are better plugs than GM buys.

Jeff Y once told me that the car companies spend
a lot of time and research on plugs being made
to their specs. and there is little improvement
in a "stock" motor over the stock plug.

poSSum - what is "anti seize"?
 

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Posted by 2002Z4CSS (Member # 1393) on :
 

quote:

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Originally posted by Hawkeye:
I was thinking along the same lines - just due
to time - R & R - and I have not seen anyone
post that there are better plugs than GM buys.

Jeff Y once told me that the car companies spend
a lot of time and research on plugs being made
to their specs. and there is little improvement
in a "stock" motor over the stock plug.

poSSum - what is "anti seize"?

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I'll answer that for Art.It is a brush on compound that will keep the 2 different metals from causing corrosion. The plug threads are steel and the head is aluminum,so all that is needed to make a good battery is water or moisture.
 

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Posted by Harry (Member # 1834) on :
 

quote:

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Originally posted by poSSum:
I'll second Greg's recommendation to R&R and use anti-seize.

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If you use anti seize, be careful not to get any into the combustion chamber. That stuff can destroy the oxygen sensors.
 

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Posted by Hawkeye (Member # 88) on :
 
Thanks, good tip - I'll be very careful.
 

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Posted by cook_dw (Member # 2143) on :
 
I noticed that you have a 98. I have a 98 SS and when I replaced the plugs I had no problems until I got to the #8 plug were I had to remove the #6 & #8 coils from the valve cover to get to it. With the cat in the way I was unable to reach the #8 plug from the bottom. Just my $0.02 worth and experiences. Hope this helps if any at all..
 

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Posted by Hawkeye (Member # 88) on :
 
Thanks, already had that pleasure. Helped
Rock change the plugs on his 99. I had to
get #8 from underneath - his fat hands wouldn't
fit!

(running real fast now!)
 

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Posted by Z28-SORR (Member # 1565) on :
 
Harry,
Let me apologize up front, this really is not personal.

quote:

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If you use anti seize, be careful not to get any into the combustion chamber. That stuff can destroy the oxygen sensors

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