 Burning oil, how much is too much?, Engine rebuilt and now with about 4,000 miles on it... |
|
|
|
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. |
|
|
| MikeInMunich |
 Jun 13 2017, 12:09 PM
Post
#1
|
|
Member  Group: Members Posts: 392 Joined: 19-November 13 From: Munich, Germany Member No.: 16,674 Region Association: None  |
Greetings again from Munich gentlemen! (IMG:style_emoticons/default/beerchug.gif)
The engine in my car was rebuilt and expanded from its original 1.7 to 2 liter. I don't recall off hand if it's 2056 or 1911 cc. I'm using the Porsche 20-50 oil and am currently replacing about 400ml every 5oo km. This seems to be quite a lot to me. I've added about 2 liters over the past 2,000 km, so it's burning about a liter per 1000km. That's about a quart per 600 miles. A freshly rebuilt engine will burn more oil, but until when, as in, how many miles? How much is roughly normal? (IMG:style_emoticons/default/confused24.gif) Thanks for your feedback! M.i.M. |
   |
 
|
  |
Replies
| Dave_Darling |
Jun 13 2017, 12:16 PM
Post
#2
|
|
914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
|
That is within the "acceptable limits" in the owner's manual, but I think it's more than I would like to see.
If you've put over 2000 km on it, it should be broken in already. My guess is that the rings did not seat very well. Try a compression test and then a leak-down test to see if any compression is leaking, and if so where from. --DD |
|
|
|
| MikeInMunich |
Jun 13 2017, 12:51 PM
Post
#3
|
|
Member Group: Members Posts: 392 Joined: 19-November 13 From: Munich, Germany Member No.: 16,674 Region Association: None |
Thanks Dave. I'll report back after I do those tests, but I'm unclear on how to determine "from where". What are the possibilities! (IMG:style_emoticons/default/confused24.gif) How can I determine where??
M.i.M. |
|
|
|
| Rand |
Jun 13 2017, 01:21 PM
Post
#4
|
|
Cross Member Group: Members Posts: 7,409 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None |
QUOTE(MikeInMunich @ Jun 13 2017, 10:51 AM)  I'm unclear on how to determine "from where". What are the possibilities! (IMG:style_emoticons/default/confused24.gif) Meaning valves vs rings, etc. Here's some info: https://mobiloil.com/en/article/car-mainten...a-leakdown-test |
|
|
|
| MikeInMunich |
Jun 13 2017, 02:01 PM
Post
#5
|
|
Member Group: Members Posts: 392 Joined: 19-November 13 From: Munich, Germany Member No.: 16,674 Region Association: None |
QUOTE(Rand @ Jun 13 2017, 11:21 AM) QUOTE(MikeInMunich @ Jun 13 2017, 10:51 AM) I'm unclear on how to determine "from where". What are the possibilities! (IMG:style_emoticons/default/confused24.gif) Meaning valves vs rings, etc. Here's some info: https://mobiloil.com/en/article/car-mainten...a-leakdown-test Ah. Thanks. |
|
|
|
| porschetub |
Jun 13 2017, 02:33 PM
Post
#6
|
|
Advanced Member Group: Members Posts: 4,706 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
QUOTE(MikeInMunich @ Jun 14 2017, 08:01 AM) QUOTE(Rand @ Jun 13 2017, 11:21 AM) QUOTE(MikeInMunich @ Jun 13 2017, 10:51 AM) I'm unclear on how to determine "from where". What are the possibilities! (IMG:style_emoticons/default/confused24.gif) Meaning valves vs rings, etc. Here's some info: https://mobiloil.com/en/article/car-mainten...a-leakdown-test Ah. Thanks. How was the engine run in ?,did you constantly change the load to keep gas pressure on the rings,did you avoid idling the car for long periods for instance, you have done more than enough time on the engine for the rings to bed in correctly,problem is they most likely won't get any better now. Unfortunately the only cure is to pull the barrels off and hone them lightly to bust the oil glaze,sorry to hear you have this problem (IMG:style_emoticons/default/sad.gif) |
|
|
|
Posts in this topic
MikeInMunich Burning oil, how much is too much? Jun 13 2017, 12:09 PM
Perry Kiehl I'll 2nd DD's comment. Not ideal, but jus... Jun 13 2017, 12:28 PM Tom_T Hey Mike,
IIRC the owners manual says up to 1 qt ... Jun 13 2017, 03:20 PM
MikeInMunich Good info, thanks Tom. Jun 13 2017, 11:18 PM MikeInMunich Hey guys!
I was on the autobahn yesterday to ... Jun 25 2017, 01:52 AM MikeInMunich http://www.914world.com/bbs2/index.php?sho...p;#en... Jun 26 2017, 12:54 AM r_towle rear main seal
rubber o-ring on flywheel
you may ... Jun 25 2017, 01:35 PM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 9th June 2024 - 05:35 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.