Changing the spark plugs..... - ZR-1 Net Registry Forums

Roadster · 03-09-2017

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

03-09-2017	#1
Roadster Join Date: Mar 2014 Location: Warrington PA Posts: 1,914	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 __________________ 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.