C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

changing spark plugs.

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Old Jul 6, 2009 | 09:03 PM
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Default changing spark plugs.

How do i change the plugs on a 92 lt1? whats the easiest way to get to them and change them? those things are deep!
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Old Jul 6, 2009 | 10:18 PM
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Hire a double jointed midget on steroids. There is no easy way.
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Old Jul 6, 2009 | 11:00 PM
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Originally Posted by aminnich
Hire a double jointed midget on steroids. There is no easy way.


so how do you get to them?
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Old Jul 6, 2009 | 11:56 PM
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Good tools and patience. A good indexable head ratchet, an assortment of extensions, a universal joint and a GOOD spark plug socket as well as different length ratchets. There is no EASY way to change them but if you have QUALITY tools it's not that bad. Wobble extesions are nice too. Some of the plugs aren't bad at all, the center of the wheel well comes out which gives a different angle at some.
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Old Jul 7, 2009 | 12:15 AM
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driver side: For #1 & #3, It helps if you remove the inner fenders central section and for 32 & #4 disconnect the air hose

passenger side: for #6 & #8 use a 1/4 rachet, remove the wires' bracket.

To remove and install the straight plug boot is another PIA. #8 is easy if you use the 1/4 rachet.

Are you changing the plug wires?
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Old Jul 7, 2009 | 12:21 AM
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on LT1 passenger side is not bad at all but driver side you will need good tools and a big load of patience and if not needed forget about the spark plug wires but everything can be done...
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Old Jul 7, 2009 | 06:59 AM
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Originally Posted by JD'S WHITE 93
Good tools and patience. A good indexable head ratchet, an assortment of extensions, a universal joint and a GOOD spark plug socket as well as different length ratchets. There is no EASY way to change them but if you have QUALITY tools it's not that bad. Wobble extesions are nice too. Some of the plugs aren't bad at all, the center of the wheel well comes out which gives a different angle at some.



Un-bolting and moving the ASR out of the way helps a lot on the drivers side. I did not have much problems on that side after that. But the rear two on the passenger side is where I really worked hard to get them in and out. A good assortment of tools were definitely the key to getting it done as JD said.
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Old Jul 7, 2009 | 07:52 AM
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Do it in two segments...the left side and the right side. It will take about an hour a side. Don't rush, have patients, you'll get done.
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Old Jul 7, 2009 | 10:31 AM
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Here's a write-up I did, page down a few and you'll see info on how to remove/install:

http://forums.corvetteforum.com/c4-g...r55ix-gap.html
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Old Jul 7, 2009 | 12:40 PM
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The No. 8 plug on the passenger side is a legendary ****.
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Old Jul 7, 2009 | 11:03 PM
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THANKS! should be fun!
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Old Jul 7, 2009 | 11:21 PM
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For number eight, there are many solutions. Try this one. Sit on the passenger side wheel with your back to the engine and use just your right hand to start the threads. I use a short piece of fuel hose over the ceramic part of the plug to start them. The hose will spin on the plug before they can be cross-threaded.
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Old Jul 8, 2009 | 12:16 PM
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Originally Posted by 94z07fx3
For number eight, there are many solutions. Try this one. Sit on the passenger side wheel with your back to the engine and use just your right hand to start the threads. I use a short piece of fuel hose over the ceramic part of the plug to start them. The hose will spin on the plug before they can be cross-threaded.
That's the technique I used, too.
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