|
|
|
|
| Author |
|
|
Registered
Join Date: Oct 2002
Location: Northern California
Posts: 786
|
Piece of metal found in oil sump
A friend of mine has an SC which he drove hard recently. It is a stock 3.0 with about 180k. After his hard run the engine began to make a light knocking sound and runs rough - it is difficult to pinpoint where the knock is coming from. After removing the oil sump cover he found a piece of metal. The metal forms the shape of semi-circle, it is about a 1/4 inch wide, has one side which is chamfered and shiny, and it is magnetic. I think it may be a part of the valve but I don't know - I posted a pic - any ideas would be appreciated.
|
||
01-12-2006, 06:44 PM
|
|
|
Registered
Join Date: Dec 2004
Location: san jose
Posts: 4,982
|
Almost looks like a valve seat that split and broke, but how would it get to the sump.
Need a pic showing top and bottom also.
__________________
steve old rocket inguneer |
||
|
01-12-2006, 07:15 PM
|
|
|
Registered
Join Date: Apr 2001
Location: Vancouver, BC, Canada
Posts: 201
|
Its hard to tell what it is but regardless it sounds like a teardown is warranted...its hard to think of something that size being at the bottom of the case and not having to go inside....sorry to say.
Cheers, Mike
__________________
Mike 97 993TT Arena Red - "Scarlett" |
||
|
01-12-2006, 08:02 PM
|
|
|
Registered
|
He should sign up with AAA and take an equity line of credit for a full rebuilt if he keeps driving it. It looks like it needs to come apart one way or another soon. I would stard with a leak-down and compression test to isolate where the issue is. Next is to take the heads off and check for valve seat damage. The bottom end could still be fine as long as there wont be catastrophic failure. However, with metal pieces going through the system I would not take the risk and do only a partical rebuild unless you can be 100% all scrap is accounted for.
Ingo
__________________
1974 Targa 3.6, 2001 C4 (sold), 2019 GT3RS, 2000 ML430 I repair/rebuild Bosch CDI Boxes and Porsche Motronic DMEs Porsche "Hammer" or Porsche PST2, PIWIS III - I can help!! How about a NoBadDays DualChip for 964 or '95 993 |
||
|
01-12-2006, 09:57 PM
|
|
|
Registered
Join Date: May 2005
Location: Loxahatchee, florida
Posts: 2,894
|
Any time you get the combination of , engine sounds funny, not running right and metal pieces in the bottom of the engine, it's time to not start it again and pull it out and tear it appart. even letting it idle could cause hundreds of dollars more damage than already done.
__________________
88 turbo Guards red Targa slant nose, and yes I am a horsepower junkie, 3.4liter,7.5 to 1 JE pistons, Adjustable WUR, Imagine fuel head, 1 bar waste gate headers,allthe cis toys. Now apart to become the next EFI monster. fabbing my own intake, headers Individual throttle bodies, MS-3, pauter rods, Xtreme twin plugged heads, gt-2 evo cams cop's. 2019 Silverado 6.2L |
||
|
01-14-2006, 06:09 PM
|
|
|
Old Member
Join Date: Feb 2004
Posts: 1,317
|
Any heavy bits or lots of fine metal on the magnetic plug in the oil tank?
__________________
Clifton Brown https://www.mancalamarketing.com |
||
|
01-14-2006, 06:19 PM
|
|
|
|
Registered
Join Date: Oct 2002
Location: Northern California
Posts: 786
|
Thanks for the info guys. That was the only piece that came out - there were no chunks or small pieces. Looks like my friend is destined to do a rebuild.
|
||
|
01-14-2006, 11:09 PM
|
|
|
Registered
Join Date: Mar 2005
Posts: 743
|
My vote is for a bearing shell..
Sorry.. Kind regards David |
||
|
01-15-2006, 01:20 PM
|
|
|
Registered
Join Date: Oct 2003
Location: Central Fla
Posts: 1,864
|
metal
Looks like whats left of a rod bearing thats spun. usually # 2 or #5
Mike Bruns |
||
|
01-15-2006, 06:43 PM
|
|
1974 Porsche 911 Targa 3.6
