 Which Heat exchangers ?, Go with SS or Stock |
|
|
|
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. |
|
|
| 914Sixer |
 Oct 31 2016, 07:56 PM
Post
#1
|
|
914 Guru  Group: Members Posts: 8,906 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region 
 |
I have a set of each in good shape. The SS ones are very light compared to the stock ones. They do not have the same sound as the stock ones to me. My understanding is they are the same diameter tubes so no horsepower advantage. I will be using a Dansk banana muffler.
Thoughts (IMG:style_emoticons/default/popcorn[1].gif) |
   |
 
|
  |
Replies(1 - 7)
| Tom_T |
Oct 31 2016, 09:26 PM
Post
#2
|
|
TMI.... Group: Members Posts: 8,318 Joined: 19-March 09 From: Orange, CA Member No.: 10,181 Region Association: Southern California
|
SS won't rust Mark .... ever, & if they're lighter, then you're "building in lightness" per the Porsche racing formula (as opposed to concerns over tone or sound) - so that's my 2 cents!
And they are the same diameter as stock. (IMG:style_emoticons/default/beerchug.gif) Tom /////// |
|
|
|
| Mark Henry |
Oct 31 2016, 09:36 PM
Post
#3
|
|
that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
If it's the same diameter it doesn't really matter, weight saving would be minimal overall unless it's a race car.
Go with the ones you like the best. (IMG:style_emoticons/default/smile.gif) |
|
|
|
| bretth |
Oct 31 2016, 10:11 PM
Post
#4
|
|
Senior Member Group: Members Posts: 899 Joined: 23-June 15 From: Central TX Member No.: 18,882 Region Association: Southwest Region |
The usual SS exchangers will fatigue and fail over many heat cycles. If they are not new at least pressure test them for leaks for safety sake. There have been threads on here in the past showing failed SS exchangers.
Brett |
|
|
|
| jcd914 |
Oct 31 2016, 10:54 PM
Post
#5
|
|
Advanced Member Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
SSI Stainless heat exchangers have tubing with the same outside diameter as stock but thinner walls so the inside diameter is larger.
My experience is it make a difference. Jim |
|
|
|
| IronHillRestorations |
Nov 1 2016, 05:51 AM
Post
#6
|
|
I. I. R. C. Group: Members Posts: 6,731 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None
|
The flanges that bolt to the head are way better on the stock HE's. There's probably twice the sealing surface, and they fit the exhaust ports better.
That said, I've never really had a problem with the SSI's, but I have seen a few with the mounting ears pulled off. |
|
|
|
| 914Sixer |
Nov 1 2016, 06:02 AM
Post
#7
|
|
914 Guru Group: Members Posts: 8,906 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region
|
I agree about the mounting ears pulling off the SS. It has happened twice to me.
|
|
|
|
| rjames |
Nov 1 2016, 09:29 AM
Post
#8
|
|
I'm made of metal Group: Members Posts: 3,955 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest
|
Splitting hairs. go with what you like best.
I'm running SS exchangers, but I also backdated a rusted out system from a '75. I haven't any fitment or sealing issues. I like that they won't rust out. Both stock and SS are old and both can fail. Go with what you like. Prices for the SS have remained constant the last 10 years so if you need the money, sell them. If you decide to go back at a later date it'll probably cost you the same to buy a set again. If you don't need the money, keep them as spares in case the stock ones rust out. |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 10th June 2024 - 12:16 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.