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 )

 
 Reply to this topicStart new topic
> removing heat exchangers, any advice or tricks?
raw1298
post Oct 30 2011, 09:55 AM
Post #1


Senior Member
***

Group: Members
Posts: 616
Joined: 9-March 09
From: Rocklin,Ca.
Member No.: 10,148
Region Association: Northern California
I am digging in and removing the heat exchangers and was wondering if there are any tricks or things to watch for? I don't want to damage the heads in the process. (IMG:style_emoticons/default/confused24.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
AZ914
post Oct 30 2011, 10:13 AM
Post #2


914 Dumbass
***

Group: Members
Posts: 1,459
Joined: 6-January 03
From: Sunny Tucson
Member No.: 98
Region Association: Southwest Region
Use a bunch of penetrating oil on the head studs. You really don't want those to break.
Some people say to use heat but I haven't done that personally.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rjames
post Oct 30 2011, 10:14 AM
Post #3


I'm made of metal
****

Group: Members
Posts: 3,930
Joined: 24-July 05
From: Shoreline, WA
Member No.: 4,467
Region Association: Pacific Northwest
Be prepared for a stripped exhaust stud or two, either upon removal or reinstallation.
Make sure you have new gaskets and the correct nuts when it comes time to re install. Pelican has them.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
raw1298
post Oct 30 2011, 10:18 AM
Post #4


Senior Member
***

Group: Members
Posts: 616
Joined: 9-March 09
From: Rocklin,Ca.
Member No.: 10,148
Region Association: Northern California
I am going to use penetrating oil. The engine was a fresh rebuild in the parts car when I bought it. I am hoping they were replaced with new studs and nuts in the process. Should I support the rear of the exchanger when I start to loosen the nuts on the head?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
tradisrad
post Oct 30 2011, 10:19 AM
Post #5


Senior Member
***

Group: Members
Posts: 985
Joined: 11-September 06
From: San Mateo, CA
Member No.: 6,815
Region Association: Northern California
anneal the new gaskets before using them. don't let the weight of the muffler and HE hang off of the studs.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
raw1298
post Oct 30 2011, 10:22 AM
Post #6


Senior Member
***

Group: Members
Posts: 616
Joined: 9-March 09
From: Rocklin,Ca.
Member No.: 10,148
Region Association: Northern California
QUOTE(tradisrad @ Oct 30 2011, 09:19 AM) *

anneal the new gaskets before using them. don't let the weight of the muffler and HE hang off of the studs.

Anneal? (IMG:style_emoticons/default/confused24.gif) Redneck from Kansas, please define?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
dlee6204
post Oct 30 2011, 10:30 AM
Post #7


Howdy
****

Group: Members
Posts: 2,162
Joined: 30-April 06
From: Burnsville, NC
Member No.: 5,956
QUOTE
Anneal? Redneck from Kansas, please define?


Heat the new copper gaskets to red hot and let them cool slowly. They will soften up and seal better.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
raw1298
post Oct 30 2011, 10:36 AM
Post #8


Senior Member
***

Group: Members
Posts: 616
Joined: 9-March 09
From: Rocklin,Ca.
Member No.: 10,148
Region Association: Northern California
Thanks! Going to start, let you know how it goes later.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Tom_T
post Oct 30 2011, 10:46 AM
Post #9


TMI....
*****

Group: Members
Posts: 8,318
Joined: 19-March 09
From: Orange, CA
Member No.: 10,181
Region Association: Southern California
Make sure to support the full weight of the HEs & muffler in several places during removal & reinstall, so you don't tweak/strip the case studs by it dropping or it sitting crooked.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
pete000
post Oct 30 2011, 10:56 AM
Post #10


Senior Member
***

Group: Members
Posts: 1,885
Joined: 23-August 10
From: Bradenton Florida
Member No.: 12,094
Region Association: South East States
I just pulled mine yesterdy. I removed the muffler to reduce the weight a bit.

I soaked the studs with PB Blaster every day for three days. The nuts all came of easily. I noticed I had one missing copper gasket and one nut was very loose causing a slight leak.

Overall they came off easily (IMG:style_emoticons/default/beerchug.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
raw1298
post Oct 30 2011, 12:05 PM
Post #11


Senior Member
***

Group: Members
Posts: 616
Joined: 9-March 09
From: Rocklin,Ca.
Member No.: 10,148
Region Association: Northern California
Done. All nuts came out easy. There were no washers in there, are there supposed to be? The nuts also were not very tight.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rjames
post Oct 30 2011, 12:23 PM
Post #12


I'm made of metal
****

Group: Members
Posts: 3,930
Joined: 24-July 05
From: Shoreline, WA
Member No.: 4,467
Region Association: Pacific Northwest
QUOTE(raw1298 @ Oct 30 2011, 11:05 AM) *

Done. All nuts came out easy. There were no washers in there, are there supposed to be? The nuts also were not very tight.


They were probably loose because they were the wrong kind of nuts.
Don't use washers. But do use the correct nuts:

Exhaust Stud Nuts

Don't over tighten the nuts when installing or you'll strip the threads for the studs. I think 18 ft lbs is the correct amount, but check the Haynes manual to be sure.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
raw1298
post Oct 30 2011, 12:38 PM
Post #13


Senior Member
***

Group: Members
Posts: 616
Joined: 9-March 09
From: Rocklin,Ca.
Member No.: 10,148
Region Association: Northern California
QUOTE(rjames @ Oct 30 2011, 11:23 AM) *

QUOTE(raw1298 @ Oct 30 2011, 11:05 AM) *

Done. All nuts came out easy. There were no washers in there, are there supposed to be? The nuts also were not very tight.


They were probably loose because they were the wrong kind of nuts.
Don't use washers. But do use the correct nuts:

Exhaust Stud Nuts

Don't over tighten the nuts when installing or you'll strip the threads for the studs. I think 18 ft lbs is the correct amount, but check the Haynes manual to be sure.

Thanks, you are right they were the wrong nuts. I will get the correct ones when I reinstall.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
messix
post Oct 30 2011, 12:44 PM
Post #14


AKA "CLUTCH KILLER"!
*****

Group: Members
Posts: 6,995
Joined: 14-April 05
From: between shit kickers and pinky lifters/ puget sound wa.north of Seattle south of Canada
Member No.: 3,931
Region Association: Pacific Northwest
use a 1/4" drive rachet to resist the urge to over tighten the nuts.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rfuerst911sc
post Oct 30 2011, 01:05 PM
Post #15


Advanced Member
****

Group: Members
Posts: 2,158
Joined: 4-May 06
From: Dahlonega , Georgia
Member No.: 5,980
Region Association: South East States
I'm a fan of adding some anti-seize compound on the threads of the studs to make it easier in the future to remove the nuts.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
raw1298
post Oct 30 2011, 06:33 PM
Post #16


Senior Member
***

Group: Members
Posts: 616
Joined: 9-March 09
From: Rocklin,Ca.
Member No.: 10,148
Region Association: Northern California
When I go back in I'll put anti seize on it. Thanks for al the advise. (IMG:style_emoticons/default/biggrin.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

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: 13th May 2024 - 09:37 AM
Invision Power Board v9.1.4 © 2024  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 ...