Heat Exchangers, Are the weldable? |
|
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. |
|
Heat Exchangers, Are the weldable? |
bandjoey |
Oct 29 2011, 02:23 PM
Post
#1
|
bandjoey Group: Members Posts: 4,930 Joined: 26-September 07 From: Bedford Tx Member No.: 8,156 Region Association: Southwest Region |
The heat box around the exhaust pipes rattles and is loose at the front end on the pipes. Any reason not to take it to the muffler shop and have it welded back down tight? (IMG:style_emoticons/default/welder.gif)
|
Prospectfarms |
Oct 30 2011, 09:00 PM
Post
#2
|
Member Group: Members Posts: 495 Joined: 7-March 11 From: Louisville, KY Member No.: 12,801 Region Association: Upper MidWest |
Mild steel HE's appear bonded by friction to the exhaust manifold pipe. A rattle there would seem to indicate failure. When mine rusted through, I peeled them off the pipe and now have "headers" but no heat. I found some SS HE this Summer. These do seem to be fully welded.
The hot air produced by the HE is routed to the cabin through distribution boxes via a pipe and plate assembly that is held together with screws. Perhaps that's what's rattling? Looking under the car, I can see that welding the hot air routing assembly would be a bad idea for a number of reasons. I also would hesitate to weld the seam between the HE and the exhaust pipe -- mainly because it would be difficult to produce a reliable weld there. I assume (hope) the welds of the SS versions started out as clean metal and were designed to accommodate repeated expansion, heat and shock. |
Lo-Fi Version | Time is now: 26th September 2024 - 12:10 PM |
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 ... |