Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

2 Pages V  1 2 >  
 Reply to this topicStart new topic
> stubborn exhaust manifold gaskets
87m491
post Feb 20 2024, 06:55 AM
Post #1


Member
**

Group: Members
Posts: 327
Joined: 29-July 12
From: Portland, the original!
Member No.: 14,731
Region Association: North East States
Finally swapping in SS heater boxes I acquired years ago and I can't budge the existing manifold gaskets. I have read and tried a few options, trying to leverage a pick under and edge and walk it out, no luck., the gasket is very tight against the engine. Trying to lever a screwdriver head against and gasket edge and the head to deform the gasket a touch except that my head's fin started to deform before the gasket! Any other tricks before I give up and just try reusing the gaskets that won't seem to come out?
Thx
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-14731-1708433712.1.jpg)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
barefoot
post Feb 20 2024, 06:56 AM
Post #2


Senior Member
***

Group: Members
Posts: 1,366
Joined: 19-March 13
From: Charleston SC
Member No.: 15,673
Region Association: South East States
If they're not damaged in the sealing face, just re-use them.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
windforfun
post Feb 20 2024, 11:52 AM
Post #3


Advanced Member
****

Group: Members
Posts: 2,053
Joined: 17-December 07
From: Blackhawk, CA
Member No.: 8,476
Region Association: None
What is the gasket material? Can you cut them?

(IMG:style_emoticons/default/idea.gif) (IMG:style_emoticons/default/idea.gif) (IMG:style_emoticons/default/idea.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
TROJANMAN
post Feb 20 2024, 12:17 PM
Post #4


Looks nice in pictures.........
*****

Group: Members
Posts: 5,275
Joined: 5-March 04
From: Colorado
Member No.: 1,753
Region Association: None
When all else fails, torch it. (IMG:style_emoticons/default/devil.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Shivers
post Feb 20 2024, 12:22 PM
Post #5


Senior Member
****

Group: Members
Posts: 2,959
Joined: 19-October 20
From: La Quinta, CA
Member No.: 24,781
Region Association: Southern California
I agree, throw some flame on it.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
930cabman
post Feb 20 2024, 01:24 PM
Post #6


Advanced Member
****

Group: Members
Posts: 4,050
Joined: 12-November 20
From: Buffalo
Member No.: 24,877
Region Association: North East States
It's hard for me to see, but if it's the copper sealing ring, I go after these with a narrow screwdriver and deform it (collapse it) and then pull it out.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
87m491
post Feb 20 2024, 04:46 PM
Post #7


Member
**

Group: Members
Posts: 327
Joined: 29-July 12
From: Portland, the original!
Member No.: 14,731
Region Association: North East States
Theoretically copper but not very malleable from my efforts.

QUOTE(windforfun @ Feb 20 2024, 09:52 AM) *

What is the gasket material? Can you cut them?

(IMG:style_emoticons/default/idea.gif) (IMG:style_emoticons/default/idea.gif) (IMG:style_emoticons/default/idea.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
87m491
post Feb 20 2024, 04:48 PM
Post #8


Member
**

Group: Members
Posts: 327
Joined: 29-July 12
From: Portland, the original!
Member No.: 14,731
Region Association: North East States
QUOTE(930cabman @ Feb 20 2024, 11:24 AM) *

It's hard for me to see, but if it's the copper sealing ring, I go after these with a narrow screwdriver and deform it (collapse it) and then pull it out.


As noted, BTDT and the engine metal deformed before the gasket. Will try the heat suggestion. If not luck I'll leave them in.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
GregAmy
post Feb 20 2024, 05:35 PM
Post #9


Advanced Member
****

Group: Members
Posts: 2,484
Joined: 22-February 13
From: Middletown CT
Member No.: 15,565
Region Association: North East States
I snag 'em with a bent pick. $10 for "the good ones" at HF.

https://www.harborfreight.com/pick-and-hook...iece-69592.html

They're cheap enough I'll almost always replace the seals. I keep a handfull in my toolbox because I don't want to have to do the job again.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DC_neun_vierzehn
post Feb 20 2024, 05:51 PM
Post #10


Senior Member
***

Group: Members
Posts: 508
Joined: 16-November 20
From: Delaware Shore
Member No.: 24,893
Region Association: MidAtlantic Region
Sounds like someone may have applied some sealant when they installed those and they baked the copper rings on real good. Or those suckers have just been on there forever. Applying some heat to the rings could help. I would try to work a pick around the entire edge of the copper rings (delicately and then more forcefully with each full rotation) before applying heat.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
windforfun
post Feb 20 2024, 06:05 PM
Post #11


Advanced Member
****

Group: Members
Posts: 2,053
Joined: 17-December 07
From: Blackhawk, CA
Member No.: 8,476
Region Association: None
QUOTE(GregAmy @ Feb 20 2024, 03:35 PM) *

I snag 'em with a bent pick. $10 for "the good ones" at HF.

https://www.harborfreight.com/pick-and-hook...iece-69592.html

They're cheap enough I'll almost always replace the seals. I keep a handfull in my toolbox because I don't want to have to do the job again.


This kinda reminds me of what my dentist uses. And he's board certified.

(IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/av-943.gif)


User is offlineProfile CardPM
Go to the top of the page
+Quote Post
930cabman
post Feb 20 2024, 07:08 PM
Post #12


Advanced Member
****

Group: Members
Posts: 4,050
Joined: 12-November 20
From: Buffalo
Member No.: 24,877
Region Association: North East States
QUOTE(windforfun @ Feb 20 2024, 07:05 PM) *

QUOTE(GregAmy @ Feb 20 2024, 03:35 PM) *

I snag 'em with a bent pick. $10 for "the good ones" at HF.

https://www.harborfreight.com/pick-and-hook...iece-69592.html

They're cheap enough I'll almost always replace the seals. I keep a handfull in my toolbox because I don't want to have to do the job again.


This kinda reminds me of what my dentist uses. And he's board certified.

(IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/av-943.gif)


Which board is he certified? 2x4?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Eric_Ciampa
post Feb 20 2024, 07:57 PM
Post #13


CHAMP914
**

Group: Members
Posts: 154
Joined: 3-April 03
From: Placerville, CA
Member No.: 511
Region Association: Northern California
I remember deforming one stubborn one. I might have used a punch to deform and create a flat lip to pull out.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
87m491
post Feb 25 2024, 02:16 PM
Post #14


Member
**

Group: Members
Posts: 327
Joined: 29-July 12
From: Portland, the original!
Member No.: 14,731
Region Association: North East States
QUOTE(DC_neun_vierzehn @ Feb 20 2024, 03:51 PM) *

Sounds like someone may have applied some sealant when they installed those and they baked the copper rings on real good. Or those suckers have just been on there forever. Applying some heat to the rings could help. I would try to work a pick around the entire edge of the copper rings (delicately and then more forcefully with each full rotation) before applying heat.


Indeed. I took a smallish flat head screwdriver and reformed the last 1/4 inch at a 90 degree angle and could not get under the gasket. I used a cold chisel to cut/deform the gasket, which they did, see copper colored areas in the picture, but still absolutely no opening to lever/pull against. Then tried propane always fun 12 inches from your face. Absolutely won't budge. I reinstalled the heat exchangers and will revisit next fall when I drop the engine to reseal it and can attack from a better angle.
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-14731-1708892176.1.jpg)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rhodyguy
post Feb 25 2024, 02:36 PM
Post #15


Chimp Sanctuary NW. Check it out.
***************

Group: Members
Posts: 22,238
Joined: 2-March 03
From: Orion's Bell. The BELL!
Member No.: 378
Region Association: Galt's Gulch
A couple of whacks on the ring with a hammer and sharp narrow wood chisel helps getting stuck ones out. The copper is fairly soft.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
windforfun
post Feb 25 2024, 04:26 PM
Post #16


Advanced Member
****

Group: Members
Posts: 2,053
Joined: 17-December 07
From: Blackhawk, CA
Member No.: 8,476
Region Association: None
(IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/agree.gif)

Cut them with a sharp steel wood chisel. You'll probably need to sharpen the chisel afterwards. Use a bench grinder & an oil stone.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
technicalninja
post Feb 25 2024, 05:11 PM
Post #17


Advanced Member
****

Group: Members
Posts: 2,527
Joined: 31-January 23
From: Granbury Texas
Member No.: 27,135
Region Association: Southwest Region
QUOTE(87m491 @ Feb 25 2024, 02:16 PM) *

QUOTE(DC_neun_vierzehn @ Feb 20 2024, 03:51 PM) *

Sounds like someone may have applied some sealant when they installed those and they baked the copper rings on real good. Or those suckers have just been on there forever. Applying some heat to the rings could help. I would try to work a pick around the entire edge of the copper rings (delicately and then more forcefully with each full rotation) before applying heat.


Indeed. I took a smallish flat head screwdriver and reformed the last 1/4 inch at a 90 degree angle and could not get under the gasket. I used a cold chisel to cut/deform the gasket, which they did, see copper colored areas in the picture, but still absolutely no opening to lever/pull against. Then tried propane always fun 12 inches from your face. Absolutely won't budge. I reinstalled the heat exchangers and will revisit next fall when I drop the engine to reseal it and can attack from a better angle.
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-14731-1708892176.1.jpg)


That one is toast now!

If you run that the groove will allow a 1000+ degree leak that will eat the head casting...

That needs to be replace now IMO.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
930cabman
post Feb 27 2024, 02:57 PM
Post #18


Advanced Member
****

Group: Members
Posts: 4,050
Joined: 12-November 20
From: Buffalo
Member No.: 24,877
Region Association: North East States
Attached Image Long thin blade slotted screwdriver, a good rap with a SMH

Attached Image Deformed copper gasket

Attached Image Done like dinner
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rjames
post Feb 27 2024, 08:15 PM
Post #19


I'm made of metal
****

Group: Members
Posts: 4,232
Joined: 24-July 05
From: Shoreline, WA
Member No.: 4,467
Region Association: Pacific Northwest
QUOTE
That one is toast now!

If you run that the groove will allow a 1000+ degree leak that will eat the head casting...

That needs to be replace now IMO.


(IMG:style_emoticons/default/agree.gif)

Don't run it without replacing it first.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
worn
post Feb 27 2024, 08:26 PM
Post #20


Winner of the Utah Twisted Joint Award
****

Group: Members
Posts: 3,466
Joined: 3-June 11
From: Madison, WI
Member No.: 13,152
Region Association: Upper MidWest
QUOTE(930cabman @ Feb 20 2024, 05:08 PM) *

QUOTE(windforfun @ Feb 20 2024, 07:05 PM) *

QUOTE(GregAmy @ Feb 20 2024, 03:35 PM) *

I snag 'em with a bent pick. $10 for "the good ones" at HF.

https://www.harborfreight.com/pick-and-hook...iece-69592.html

They're cheap enough I'll almost always replace the seals. I keep a handfull in my toolbox because I don't want to have to do the job again.


This kinda reminds me of what my dentist uses. And he's board certified.

(IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/av-943.gif)


Which board is he certified? 2x4?

Keep this in mind: to anneal and soften copper you heat till they glow a dull red and quench it in cold water. That hardens steel, but it softens copper silver or gold. You want the gasket soft enough to deform.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

2 Pages V  1 2 >
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 26th April 2025 - 12:33 PM
Invision Power Board v9.1.4 © 2025  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...