S1 L67 Exhaust manifold removal help - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-23-2007, 02:41 PM   #1
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Default S1 L67 Exhaust manifold removal help

Well, I finally have some time to pull my exhaust manfolds, but I need to know if I need to remove anything to get them out. I have never really removed exhaust manifolds on a FWD, so help me out! Thanks!
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Old 10-23-2007, 02:51 PM   #2
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The lift brackets on the front and back, oil dipstick, EGR pedastal, collar near the EGR pedastal, intake tube, possibly some of the throttle linkage for clearance. You might take out the spark plugs just to make sure you don't crack one off.
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Old 10-23-2007, 03:08 PM   #3
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Be sure to soak all your bolts, nuts, and studs in PB Blaster before attempting to remove. The last thing you need is to have to pull the heads off for snapped bolt extraction or drill/tap. Be very liberal with that stuff where the crossover bolts onto the rear manifold.
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Old 10-23-2007, 03:10 PM   #4
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Make sure the two studs that mate to the downpipe flange are removed from underneath or it'll fight you coming out.

They're fairly easy.
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Old 10-23-2007, 09:59 PM   #5
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Should be pretty easy and quick.. Here'* what WillWren mentioned in another post that relates to your topic.

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Originally Posted by willwren
I'm misunderstanding something. You said the 93 was harder than the 2k?

I'm talking about 30 minutes from a running engine to both manifolds on the shop floor. 92-95 S1 manifolds are a snap to pull and install.
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Old 10-24-2007, 12:52 AM   #6
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Absolutely. Pull the nuts off the exhaust studs FIRST, and break the downpipe loose, as well as the crossover. The front manifold comes out easy. Then remove whatever is in the way of the rear/crossover.

Piece of cake. 1 hour or less for a first-timer. Just remember those exhaust downpipe studs.
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Old 10-24-2007, 07:42 AM   #7
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FWIW my 95 fought hard the first time and took longer than an hour. Basically got the mainfold out, but broken studs had to be removed and they were lovely..just lovely.
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