blown engine - Page 4 - Rennlist - Porsche Discussion Forums

Notices
996 Forum
Sponsored by: LN Engineering
Sponsored by: LN Engineering

blown engine

Reply

Old 01-16-2015, 05:23 PM
  #46
ZX9RCAM
Addict
Rennlist Member
 
ZX9RCAM's Avatar
 
Join Date: Aug 2005
Location: Spring, Texas (The Woodlands)
Posts: 5,019
Default

Originally Posted by p.vanderlinden View Post
Wow, so car goes 77k on factory IMS and 23K on expensive LN IMS bearing?

Makes me wonder about the quality of the install (if it actually was installed)
Once again, nobody has said it was the IMS....
ZX9RCAM is offline  
Reply With Quote
Old 01-16-2015, 05:25 PM
  #47
p.vanderlinden
User
 
p.vanderlinden's Avatar
 
Join Date: Apr 2002
Location: 40th Anni. South OC, CA
Posts: 275
Default

True enough but the symptom "rocks in a hub cap" indicates a high probability, though being able to drive the car after hearing that makes one wonder if it might be something else?
p.vanderlinden is offline  
Reply With Quote
Old 01-16-2015, 05:34 PM
  #48
Ck986
User
 
Ck986's Avatar
 
Join Date: May 2013
Location: NJ
Posts: 607
Default

If you can drive the car, its probably not the imsb. Maybe the chain for one bank went. I have heard of the motor running on 3 cylinders in a turbo due to a broken chain.
Ck986 is offline  
Reply With Quote
Old 01-16-2015, 05:36 PM
  #49
gricec
User
 
gricec's Avatar
 
Join Date: Apr 2008
Posts: 738
Default

Surely you would notice some kind of power loss. How far did you drive it?
gricec is offline  
Reply With Quote
Old 01-16-2015, 05:49 PM
  #50
kcattorney
Banned
 
Join Date: Jun 2003
Location: Overland Park, KS
Posts: 5,082
Default

Really - no loss of power? Second opinion maybe?
kcattorney is offline  
Reply With Quote
Old 01-16-2015, 05:50 PM
  #51
Howaboutthat
User
 
Join Date: Sep 2013
Posts: 227
Default

Originally Posted by p.vanderlinden View Post
Wow, so car goes 77k on factory IMS and 23K on expensive LN IMS bearing?

Makes me wonder about the quality of the install (if it actually was installed)
Ditto. California car so, presumably, no severe cold weather starting risk across its history. Bad install of IMSB; water pump fragmentation; timing chain breach? Even if the cylinders scored, is this is foreseeable outcome? Odd.
Howaboutthat is offline  
Reply With Quote
Old 01-16-2015, 10:33 PM
  #52
cringely
User
Thread Starter
 
cringely's Avatar
 
Join Date: Sep 2012
Location: So Cal
Posts: 258
Default

Originally Posted by gricec View Post
Surely you would notice some kind of power loss. How far did you drive it?
Possibly as far as 40 miles. Didn't stomp on the accelerator, but going up a 10% grade, didn't have to hit the gas, just tickle it.

I've attached a photo of the (taken apart) oil filter showing the metal filings caught by the filter—if that will help (especially if someone knows what a trashed IMS bearing does to the oil filter). sorry for the size of the image
Attached Images  
cringely is offline  
Reply With Quote
Old 01-16-2015, 10:35 PM
  #53
tdrimer
User
 
tdrimer's Avatar
 
Join Date: Dec 2011
Posts: 449
Default

Is JR. Still around to see this?
tdrimer is offline  
Reply With Quote
Old 01-16-2015, 11:25 PM
  #54
Cuda911
Addict
Rennlist Member
 
Cuda911's Avatar
 
Join Date: Jun 2013
Location: Oceanside/Vista (N. San Diego County), CA
Posts: 8,812
Default

Hmmm.... looks more like ground up plastic than metal. Rail guide?
Cuda911 is offline  
Reply With Quote
Old 01-16-2015, 11:29 PM
  #55
tdrimer
User
 
tdrimer's Avatar
 
Join Date: Dec 2011
Posts: 449
Default

Originally Posted by Cuda911 View Post
Hmmm.... looks more like ground up plastic than metal. Rail guide?
And isn't the LN bearing ceramic ball? What metal would come from the bearing?
tdrimer is offline  
Reply With Quote
Old 01-16-2015, 11:53 PM
  #56
Sneaky Pete
Addict
Rennlist Member
 
Sneaky Pete's Avatar
 
Join Date: Nov 2008
Location: Mooresville, IN (Life Long Cheesehead)
Posts: 5,713
Default

There no way this is IMS related. The motor would have seized up from loss of oil. Something else caused this. No doubt damage was done after 40 miles.
Sneaky Pete is offline  
Reply With Quote
Old 01-17-2015, 12:46 AM
  #57
Schnell Gelb
Super User
 
Join Date: Apr 2014
Location: Los Angeles
Posts: 2,265
Default

I've had a similar engine issue.
The chain rails debris should be brown/dark brown
Magnetic debris -maybe IMS
Non metallic glitttering debris = crankshaft/rod bearings
White/grey granular - look at it under a microscope to see the shape of the particles. ceramic should be shards ,not spheres?
Schnell Gelb is offline  
Reply With Quote
Old 01-17-2015, 01:56 AM
  #58
aftCG
User
 
Join Date: Feb 2014
Posts: 98
Default

That is a crap ton of debris. I found maybe half of one of those filter folds.

Next I found a glitter filled two row IMSB and then went on to find heavily worn out main and rod bearings.

I'm going to guess you drove that car 40 miles with five cylinders.
aftCG is offline  
Reply With Quote
Old 01-17-2015, 12:14 PM
  #59
cringely
User
Thread Starter
 
cringely's Avatar
 
Join Date: Sep 2012
Location: So Cal
Posts: 258
Default

also, no loss of oil pressure during the drive to repair shop, normal water temp, no check engine light or any dashboard indicators. If it wasn't for the noise, I wouldn't have been aware of any problem.
cringely is offline  
Reply With Quote
Old 01-17-2015, 01:40 PM
  #60
Sneaky Pete
Addict
Rennlist Member
 
Sneaky Pete's Avatar
 
Join Date: Nov 2008
Location: Mooresville, IN (Life Long Cheesehead)
Posts: 5,713
Default

Originally Posted by cringely View Post
also, no loss of oil pressure during the drive to repair shop, normal water temp, no check engine light or any dashboard indicators. If it wasn't for the noise, I wouldn't have been aware of any problem.
This is not making sense......at all. Maybe you ran over a squirrel and it somehow got lodged in your airbox.....and that squirrel is super pissed! I would be to after 40 miles.

So what exactly is your mechanic saying in order to charge $19K for a installed motor? That part isn't clear unless I mis-read something.
Sneaky Pete is offline  
Reply With Quote
 

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
B-ran
996 Forum
11
11-29-2017 02:20 PM
2WheelsRBetter
GT4
6
03-20-2016 09:26 AM
Drifting
991 GT3 GT3RS and 911R
4
02-19-2016 02:35 PM
Drifting
991 GT3 GT3RS and 911R
7
02-16-2016 03:32 PM
waizone
993 Forum
12
01-18-2016 03:42 PM

Thread Tools
Search this Thread
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -3. The time now is 09:44 PM.


Copyright ę 1998 - 2017 Rennlist.com We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: