 Head rebuild advice for 103mm cut heads, Reweld or buy new, who's running 103? |
|
|
|
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. |
|
|
| nditiz1 |
 Aug 22 2023, 07:36 PM
Post
#1
|
|
Senior Member  Group: Members Posts: 1,202 Joined: 26-May 15 From: Mount Airy, Maryland Member No.: 18,763 Region Association: MidAtlantic Region 
 |
EDIT: Head is toast. Looking to source replacement ones. So I'm tearing into the FAT perfomance 2.6 engine. I was going to try to run it, but before that went to perform a leak down and saw a gaping hole in #4 next to the plug. I just removed the head and it looks good other than previous welding I assume FAT did when the built the heads. There is little material amount between the camber and the edge of the head due to the cut of 103 P&C. Is this just the evil of hipo engines or are better options out there? Should I have these rewelded OR buy new 103 cut heads? Who out there is running big power? Also I know Raby spoke highly about FAT engines, but damn did they love RTV.    |
   |
 
|
  |
Replies
| crash914 |
Aug 25 2023, 07:32 AM
Post
#2
|
|
its a mystery to me Group: Members Posts: 1,827 Joined: 17-March 03 From: Marriottsville, MD Member No.: 434 Region Association: MidAtlantic Region |
I have at least one set of 103 cut heads. A couple of small cracks around the valve seats. I also think i have a couple of rebuildable core heads for stockish cylinders.
You are welcome to swing by and take a look. I should be home all weekend except for a dump run Saturday early am. herb |
|
|
|
Posts in this topic
nditiz1 Head rebuild advice for 103mm cut heads Aug 22 2023, 07:36 PM
Mikey914 I'd start with new metal. Only way to know for... Aug 22 2023, 10:42 PM technicalninja That's TOAST in my book.
Wow! that had F... Aug 23 2023, 10:50 AM Mikey914 Yes thermal failure “crystallizes “ that’s w... Aug 23 2023, 05:39 PM rhodyguy Does this mean the case was opened up for the 103 ... Aug 24 2023, 08:00 AM
nditiz1
Does this mean the case was opened up for the 103... Aug 24 2023, 10:58 AM Mikey914 Size is ok, add additional oil capacity with an of... Aug 24 2023, 01:02 PM porschetub
Size is ok, add additional oil capacity with an o... Aug 24 2023, 03:53 PM Mikey914
Size is ok, add additional oil capacity with an ... Aug 24 2023, 06:39 PM rhodyguy Buy an unaltered case. Aug 24 2023, 06:17 PM Al Meredith If I remember correctly Jake didn't like 103s ... Aug 25 2023, 08:59 AM nditiz1 Herb! I totally forgot how you love running th... Aug 25 2023, 12:07 PM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 31st October 2024 - 07:31 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.