 Exhaust stud woes, What's the next step? |
|
|
|
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. |
|
|
| saigon71 |
 Jan 24 2015, 11:39 AM
Post
#1
|
|
Advanced Member  Group: Members Posts: 2,006 Joined: 1-June 09 From: Dillsburg, PA Member No.: 10,428 Region Association: MidAtlantic Region 
 |
Nothing is ever easy on these cars...
My heat exhangers got some oil in them from the bad oil cooler seals, so I decided to pull them for a good cleaning. One exhaust nut was really difficult to remove. Once I finally got it off, I saw that the threads were galled. Ordered some new exhaust studs. Went to work removing the old one after researching 914 world. Heated stud boss with MAP torch & sprayed a bunch of PB blaster. Welded a nut on the end...nut kept breaking loose without budging the stud, removing small portions off the top of the stud during the six attempts. Then welded a bar to the remainder of the stud and used an adjustable wrench for leverage. Heat & PB Blaster, working it a little at a time, back & forth. It finally broke free. Reheat & apply more PB. On about the 5th cycle, the stud broke off below the level of the head. Engine is in the car & I'd like to keep it that way. What are my best options for getting this thing out now...and installing a new stud? I've had horrible luck with EZ-outs on other applications. Thanks!        |
   |
 
|
  |
Replies
| veekry9 |
Jan 24 2015, 01:25 PM
Post
#2
|
|
OldMember Group: Retired Members Posts: 3,068 Joined: 17-June 13 From: TO Member No.: 16,025 Region Association: Canada |
QUOTE(saigon71 @ Jan 24 2015, 12:39 PM)  Nothing is ever easy on these cars... ....It finally broke free. Reheat & apply more PB. On about the 5th cycle, the stud broke off below the level of the head. Engine is in the car & I'd like to keep it that way. What are my best options for getting this thing out now...and installing a new stud? I've had horrible luck with EZ-outs on other applications. Thanks! PITA.Huh? The heat +PB broke through the corrosion and now needs more of the same. A hi-speed grinder to drill thru the bolt's minor dia (6mm)and removal of the thds helix. Underneath the car on your back with a face mask,in close quarters. Start drilling on center with a small dia drill(5/32 .094)use a center punch,carefully. Continue drilling with ever larger drills until the minor dia is reached.Do Not drill out the head's thds. Cleanout hole + remaining thds with brakeclean and insert new stud with Red Loctite or hitemp epoxy. Tough work,good luck. (IMG:style_emoticons/default/biggrin.gif) |
|
|
|
Posts in this topic
saigon71 Exhaust stud woes Jan 24 2015, 11:39 AM
pilothyer I know this is not what you want to hear, but sinc... Jan 24 2015, 11:49 AM Mark Henry Really hard to do in car.
What you did there is s... Jan 24 2015, 12:03 PM larryM . your question updated
you should be able to get... Jan 25 2015, 01:22 PM stugray It can be done as mentioned above, but if you are ... Jan 25 2015, 11:13 PM JamesM Pull the engine now, it will save you in the long ... Jan 26 2015, 04:58 PM
larryM X2
assuming you have plenty of money, & can ... Jan 27 2015, 10:35 PM Mueller I botched an attempt at drilling out an exhaust st... Jan 28 2015, 09:20 AM 9146986 You'll get closer to hitting the center of the... Jan 28 2015, 09:37 PM relentless The stud is broken off below the level of the head... Jan 29 2015, 04:05 PM 9146986 I didn't mean to sound insulting Saigon, I jus... Jan 29 2015, 09:48 PM stugray
A vintage piece of equipment that really works go... Jan 30 2015, 12:05 AM saigon71 Thanks for all the advice and suggestions – I gr... Jan 31 2015, 05:06 PM saigon71 Made three different fixtures so I could step dril... Jan 31 2015, 05:31 PM type47 Go Bob, go! :trophy: Jan 31 2015, 05:40 PM saigon71 I am very happy to report that it worked well. Us... Jan 31 2015, 05:47 PM mepstein Wow! You knocked it out of the park. Congrats... Jan 31 2015, 05:54 PM saigon71 Glad to have this project done! I’m going t... Jan 31 2015, 05:59 PM Cap'n Krusty "New" exhaust nuts? Good luck finding t... Jan 31 2015, 07:03 PM mepstein
"New" exhaust nuts? Good luck finding ... Jan 31 2015, 07:11 PM Bartlett 914
"New" exhaust nuts? Good luck finding ... Feb 1 2015, 12:21 PM stugray
Would you mind showing a pic of the proper nuts? ... Feb 1 2015, 01:49 PM 914Mike I've used brass nuts, never had one get stuck ... Jan 31 2015, 11:22 PM relentless Nice job! I picked up some 8mm copper exhaust... Feb 1 2015, 01:57 PM pilothyer These should work Helicoil Flange Nuts Feb 1 2015, 02:26 PM Harpo
These should work Helicoil Flange Nuts
This sup... Oct 1 2015, 06:15 PM ClayPerrine I use a Mercedes Benz exhaust manifold nut.
Merce... Feb 1 2015, 06:25 PM ThePaintedMan This is one of the most well-thought out and brigh... Feb 2 2015, 08:00 AM mepstein Stomski makes a tool in a kit with all different a... Oct 1 2015, 04:06 PM saigon71
Stomski makes a tool in a kit with all different ... Oct 3 2015, 04:17 PM wndsnd I am impressed. It sucks working on your back wit... Oct 1 2015, 07:39 PM porsche913b_sp Dang you the MAN, I like your persistence and not ... Oct 2 2015, 02:43 PM saigon71
Dang you the MAN, I like your persistence and not... Oct 3 2015, 04:22 PM mepstein I would think so since there are many different si... Oct 3 2015, 04:25 PM ctc911ctc I started replacing all of my studs with the engin... Apr 7 2020, 12:26 PM Bleyseng
I started replacing all of my studs with the engi... Apr 7 2020, 03:42 PM |
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 23rd November 2024 - 01:18 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.