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03-09-2017
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#1 |
 
Join Date: Mar 2014
Location: Warrington PA
Posts: 1,914
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Changing the spark plugs.....
Removed all of the spark plugs tonight, and were they ever in there!!!! very tight to say the least. Ended up combining what tools I already had, one that was recommended by many on the forum and a few I found that could help me out with removal.
Number 8 plug of course was the hardest, with number 6 being next in line. Both these two and all of the others needed some "gentle persuasion" to remove. You might have thought Superman installed them. Apparently that person did not use any anti-seize. From what the PO said that was before the previous PO, these plugs have been in there for 12-15000 miles. They are AC 41-963's. They appear in decent shape for the mileage, but also may have some slight issues. Checking the gap, they were @ .050 and some were a little wider. Some of the tools used.... The one on the left is the 5/8" with the swivel. The one on the right is a magnetic socket with a built-in extension...  the magnet worked great when a plug didn't want to come out...  the socket on the right is over 5" long and fits flush with the top of the head....you feel more comfortable with it because it is longer and therefore has better leverage...JMO  
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Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1974 L-82 355 Vert. 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member Last edited by Roadster; 03-09-2017 at 11:57 PM. |
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03-09-2017
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#2 |
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Join Date: Mar 2014
Location: Warrington PA
Posts: 1,914
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Re: Changing the spark plugs.....
also used some wobble extensions trying to find the best combo for #'s 6 & 8.
  one of the tough ones....glad they are all out.....whew!!!  the final combo for #8... 
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Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1974 L-82 355 Vert. 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member Last edited by Roadster; 03-09-2017 at 11:59 PM. |
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03-09-2017
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#3 |
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Join Date: Mar 2014
Location: Warrington PA
Posts: 1,914
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Re: Changing the spark plugs.....
Some of you may agree or may disagree....I wasn't about to throw my back out removing spark plugs....so when I felt that they were in there really tight, resorted to one of my leverage tools. This time only a half of a floor jack handle. No room for the whole thing....lol I wouldn't do this on anyone else's vehicle, but for me it broke most of the plugs loose. Only two I undid by hand. The others needed persuasion......
 Spark plugs from Left to Right..... #8 #6 #4 #2...  you can see oil at the top of the threads on 3 of the plugs...  Spark plugs from Left to Right..... #7 #5 #3 #1... oil at the top of all of the threads...  
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Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1974 L-82 355 Vert. 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member Last edited by Roadster; 03-10-2017 at 01:28 AM. |
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03-10-2017
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#4 |
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Join Date: Jan 2017
Location: US
Posts: 233
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Re: Changing the spark plugs.....
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03-10-2017
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#5 | |
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Join Date: Mar 2014
Location: Warrington PA
Posts: 1,914
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Re: Changing the spark plugs.....
Quote:
NGK 3690 Iridium IX Spark Plugs (TR7IX) Went with Hib's recommendation of going two colder ranges than the stock range which may be too hot for our engines.
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Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1974 L-82 355 Vert. 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member |
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03-10-2017
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#6 |
 Join Date: Apr 2004
Location: ATL. GA.
Posts: 2,170
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Re: Changing the spark plugs.....
Part of the AC box is removable to help assist in the removal of the firewall passenger side plug.
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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 |
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03-10-2017
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#7 | |
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Join Date: Mar 2014
Location: Warrington PA
Posts: 1,914
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Re: Changing the spark plugs.....
Quote:
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Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1974 L-82 355 Vert. 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member |
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03-10-2017
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#8 |
 
Join Date: Sep 2008
Location: Mullica Hill, New Jersey
Posts: 2,593
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Re: Changing the spark plugs.....
 Tom!As always, THANK YOU for sharing all that you do! Your descriptions are succinct and easy to understand. However, the real highlight is your picture taking! All of the right shots, that also explain visually the methodology used! It is you and the others that take the time to do this, that gives other owners, particularly, newer ones, the confidence to tackle these jobs! Marty |
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03-10-2017
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#9 | |
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Join Date: Mar 2014
Location: Warrington PA
Posts: 1,914
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Re: Changing the spark plugs.....
Quote:
 Lol....yes there is a method to my madness....lol I try to give as much as a visual as possible, maybe an individual who has never attempted anything before, would be willing to give it a try between the pics and other members advice, would get them through it...btw, I liked the extended breaker bar pic the best!!! lol Doing some research, it seems that the anti-seize is not really needed, but to use a very light coat of oil instead. I also found that the torque of the plugs should be 15 lb.ft I rather check for re-torque if necessary rather than overtighten.
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Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1974 L-82 355 Vert. 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member |
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03-10-2017
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#10 |
Join Date: Dec 2007
Location: NYC
Posts: 1,189
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Re: Changing the spark plugs.....
Looks like you can use caters fuel line clamps yours is broken :-)
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