 Removing Exhaust Manifold Seals, Removing Exhaust Manifold Seals |
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| 1988Hawk |
 Oct 2 2008, 09:54 PM
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#1
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Newbie  Group: Members Posts: 41 Joined: 17-April 08 From: Chicago Member No.: 8,929 Region Association: None  |
I need some advice. What is the best method for removing the old copper exhaust manifold seals. I don't want to damage the head.
Thanks Jim |
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| dbgriffith75 |
Oct 2 2008, 10:09 PM
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#2
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TheGrif Group: Members Posts: 509 Joined: 25-July 07 From: Iowa, USA Member No.: 7,945 Region Association: Upper MidWest |
just use a straight blade screwdriver to gently pry at the seal- work it for a few minutes and the seal will drop without damaging the head
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| Gint |
Oct 2 2008, 10:22 PM
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#3
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Mike Ginter Group: Admin Posts: 16,075 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains  |
(IMG:style_emoticons/default/agree.gif) You can bend the tip of an old butter knife 90 degrees and use that also to catch a edge of the gasket.
It's really not that hard. Once in a while you'll get one that's stubborn, but they all come out. |
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| Bruce Hinds |
Oct 2 2008, 11:29 PM
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#4
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V-8 madness Group: Members Posts: 733 Joined: 27-December 06 From: Port Orchard, WA Member No.: 7,391 Region Association: Pacific Northwest |
After you replace them, make sure you use the copper nuts on the studs. I'll say that again, make sure you use the copper nuts!
Bruce |
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| arvcube |
Oct 3 2008, 12:48 AM
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#5
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Member Group: Members Posts: 170 Joined: 25-September 07 From: poway, ca Member No.: 8,147 |
a right-angle tip pick always works for me...
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| sww914 |
Oct 3 2008, 03:28 AM
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#6
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Advanced Member Group: Members Posts: 2,439 Joined: 4-June 06 Member No.: 6,146 Region Association: None |
Before installing the new copper rings I like to anneal them. I heat them until they're a dull red and let them cool. It softens the copper and makes it more likely that they will seal.
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| Bartlett 914 |
Oct 3 2008, 07:17 AM
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#7
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Advanced Member Group: Members Posts: 2,216 Joined: 30-August 05 From: South Elgin IL Member No.: 4,707 Region Association: Upper MidWest |
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| angerosa |
Oct 3 2008, 09:18 AM
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#8
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Member Group: Members Posts: 334 Joined: 21-August 07 From: Reston, VA Member No.: 8,023 Region Association: MidAtlantic Region |
QUOTE(arvcube @ Oct 3 2008, 02:48 AM)  a right-angle tip pick always works for me... That's what I used. Make sure you get them all out. I found a previous mechanic had put two seals in one side to account for lower worn threads on the studs. I took out the double seals and replaced studs. It never seems to be a straight forward repair on a 914. |
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| Cap'n Krusty |
Oct 3 2008, 09:28 AM
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#9
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
QUOTE(Bruce Hinds @ Oct 2 2008, 10:29 PM) After you replace them, make sure you use the copper nuts on the studs. I'll say that again, make sure you use the copper nuts! Bruce Ummmmm................, they're not copper. Unless someone has developed copper that you can pick up with a magnet. The factory DID NOT use lock nuts, and they didn't have problems with the nuts coming loose. The Cap'n |
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| Dave_Darling |
Oct 3 2008, 09:44 AM
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#10
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914 Idiot Group: Members Posts: 14,990 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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Don't the factory nuts have a slice in the side to provide the self-locking action?
--DD |
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| jim_hoyland |
Oct 3 2008, 09:45 AM
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#11
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Get that VIN ? Group: Members Posts: 9,303 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California
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What do you torque the copper nuts to ?
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| Mark Henry |
Oct 3 2008, 10:16 AM
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#12
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
I've always found the copper (coated) split nuts welded themselves to the stud and bunged up the threads or pulled the studs when removing them.
I never use them, I have a stash of 12mm german nuts that I use. I also use factory exhaust nuts from a V8 Audi. |
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| Cap'n Krusty |
Oct 3 2008, 10:31 AM
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#13
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
QUOTE(Dave_Darling @ Oct 3 2008, 08:44 AM) Don't the factory nuts have a slice in the side to provide the self-locking action? --DD No. The Cap'n |
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| Cevan |
Oct 3 2008, 10:39 AM
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#14
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Senior Member Group: Members Posts: 1,079 Joined: 11-December 06 From: Western Massachusetts Member No.: 7,351 |
The copper (looking) nuts I used were slightly ovalized. Got them from AA.
The other question is how to hold the new gaskets in place while you install the exhaust manifold. Last time I used a couple of drops of Superglue to hold them on the head. There must be another way. |
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| Gint |
Oct 3 2008, 06:47 PM
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#15
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Mike Ginter Group: Admin Posts: 16,075 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains |
I like to stretch them the slightest smidge so that I get a friction fit into the recess in the head. It takes some time and patience to get them fit, but it works every time.
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| Dave_Darling |
Oct 4 2008, 12:36 AM
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#16
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914 Idiot Group: Members Posts: 14,990 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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I push them up into the recess in the head, then twist them until the ends of the oval are touching the edges of the recess. The friction seems to hold them in place just well enough to get the exhaust in place.
Except when the exhaust tubes were tweaked, but that's another story... --DD |
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