Notices
996 Forum 1999-2005
Sponsored by:

My roller

Thread Tools
 
Search this Thread
 
Old 02-04-2018, 07:17 PM
  #1  
Coopduc
Burning Brakes
Thread Starter
 
Coopduc's Avatar
 
Join Date: Mar 2017
Location: Asheville NC
Posts: 854
Received 256 Likes on 135 Posts
Default My roller

I started working on my 99 I bought as a roller. Engine had a bad knock and I suspected a bad connecting rod bearing. Drained the oil and Swirled a magnet around in it then cut open the filter. I’m seeing steel as well as obvious bearing material in the inside pleats of the filter as well as steel. Some of the particles “danced” as I ran the magnet over the pleats. Outside pleats look clean, so it appears the filter was doing its job. Also lots of glitter in the bottom of the canister.
Next I’ll drop the sump plate. To be continued...



Old 02-04-2018, 07:30 PM
  #2  
lowpue
Rennlist Member
 
lowpue's Avatar
 
Join Date: Mar 2012
Posts: 2,525
Received 544 Likes on 263 Posts
Default

As you rebuild the engine, let me know what you need because I may have parts from my engine failure that may be useful to you.... :-)
Old 02-04-2018, 09:38 PM
  #3  
Slakker
Race Car
 
Slakker's Avatar
 
Join Date: Dec 2013
Location: Edmond, OK
Posts: 4,775
Received 270 Likes on 124 Posts
Default

Cool. Subscribing.
Old 02-05-2018, 10:01 PM
  #4  
Coopduc
Burning Brakes
Thread Starter
 
Coopduc's Avatar
 
Join Date: Mar 2017
Location: Asheville NC
Posts: 854
Received 256 Likes on 135 Posts
Default

Dropped the sump plate today and discovered major badness inside.
Major carnage inside


One piece of aluminum, thin like foil, the rest steel.


Looking up, engine looks surprisingly clean.


Swirl pots have a fine paste mix inside. Note bits of bearing material on the inlet screen.
Old 02-05-2018, 10:05 PM
  #5  
dan_189
Race Car
 
dan_189's Avatar
 
Join Date: Nov 2014
Location: Melbourne, Australia
Posts: 3,794
Received 141 Likes on 124 Posts
Default

Those bits don't look good

Sorry to see that, guessing you'll keep digging?
Old 02-05-2018, 10:11 PM
  #6  
Coopduc
Burning Brakes
Thread Starter
 
Coopduc's Avatar
 
Join Date: Mar 2017
Location: Asheville NC
Posts: 854
Received 256 Likes on 135 Posts
Default

Tomorrow I’ll start to drop the engine. I was hoping to be able to rebuild if the crank was good, but after seeing those steel slivers I’m sure the crank must be trashed.
Old 02-08-2018, 05:23 PM
  #7  
Coopduc
Burning Brakes
Thread Starter
 
Coopduc's Avatar
 
Join Date: Mar 2017
Location: Asheville NC
Posts: 854
Received 256 Likes on 135 Posts
Default

Have the engine out and on the stand. Clutch and DMF are in good shape. Some greasy paste stuff around the IMSB, but RMS looks good. Curious.




Note bank 2 head is noticeably cleaner than bank 1. PO said he replaced a blown head gasket before the engine failure. Not sure that was the case or if the head cracked and was replaced. There was evidence of milkshake in the coolant reservoir, although the coolant in the engine was clean. It wasn’t cleaned out very well.


Engine after flywheel removal


Grime around IMSB...normal??



Getting the engine on the stand was a project in itself!

Old 02-08-2018, 10:02 PM
  #8  
RngTrtl
Drifting
 
RngTrtl's Avatar
 
Join Date: Dec 2005
Location: ATL, GA w/a 996TT
Posts: 2,120
Received 100 Likes on 64 Posts
Default

i saw you on reddit the other day!
Old 02-08-2018, 10:21 PM
  #9  
Coopduc
Burning Brakes
Thread Starter
 
Coopduc's Avatar
 
Join Date: Mar 2017
Location: Asheville NC
Posts: 854
Received 256 Likes on 135 Posts
Default

Originally Posted by RngTrtl
i saw you on reddit the other day!
my son is posting pics there!
Old 02-09-2018, 08:36 PM
  #10  
kukaepe
Intermediate
 
kukaepe's Avatar
 
Join Date: Jan 2017
Location: Las Vegas, NV
Posts: 32
Likes: 0
Received 2 Likes on 1 Post
Default

Your scissor lift arrangement looks awesome. Did you modify your garage floor yourself for the install? What brand and model # lift is that, I would love to duplicate your set up if the work and cost wasn't to outrageous...
Old 02-09-2018, 09:49 PM
  #11  
Coopduc
Burning Brakes
Thread Starter
 
Coopduc's Avatar
 
Join Date: Mar 2017
Location: Asheville NC
Posts: 854
Received 256 Likes on 135 Posts
Default

Thanks kukaepe- I imported the lift from China and did the install myself. Here is a link to the model.
http://www.dy-autoequip.com/html/201...s_0724/34.html
there are similar models available in the USA, but for me it was more cost effective to import it myself, plus I had some experience importing goods from overseas at my job, so I was comfortable doing that. Others may have some concerns wiring cash to China with a certain amount of faith that the company on the other end will honor their side of the bargain, but it was all handled professionally.
Installation was hard work since it involves cutting the existing concrete floor, digging 2 pits about 5 feet long x 2 feet wide x 24 inches deep. Then of course, framing and pouring concrete base 6 inches thick and walls 4 inches. Basically you need a strong back and a weak mind.
Then moving the lifts into the pits is a challenge in itself, these things are heavy! I used the same engine hoist in the pics to maneuver them into position.
Overall, it was one of the best things I ever did in my garage, and surprising how many non-automotive applications they can be used for. Think temporary work bench, saw horses, out feed table for table saw, putting anything heavy into pickup trucks, trailers, etc.
Old 02-13-2018, 10:14 PM
  #12  
Coopduc
Burning Brakes
Thread Starter
 
Coopduc's Avatar
 
Join Date: Mar 2017
Location: Asheville NC
Posts: 854
Received 256 Likes on 135 Posts
Default

Making some progress on the engine tear down, in my quest to find the damage. Not seeing anything unusual under the cam covers.


Then removed the heads.


Nothing unusual in bank 1.


Can’t say the same for bank 2. Note unusual pattern in cyl 6. No signs of impact damage, but piston 6 also shows unusual pattern.



Note piston 6. Also note remnants of milkshake. Didn’t see this in bank 1.

Old 02-13-2018, 10:28 PM
  #13  
dan_189
Race Car
 
dan_189's Avatar
 
Join Date: Nov 2014
Location: Melbourne, Australia
Posts: 3,794
Received 141 Likes on 124 Posts
Default

Nice work! Please keep the pics coming
Old 02-13-2018, 11:17 PM
  #14  
Cosmo Kramer
Rennlist Member
 
Cosmo Kramer's Avatar
 
Join Date: Jan 2009
Posts: 4,657
Received 181 Likes on 86 Posts
Default

That pattern is the tightest area in the combustion chamber. I bet there is a bad rod bearing on #6 which has allowed the piston to move higher and touch that area and clean it off.
Old 02-13-2018, 11:19 PM
  #15  
Coopduc
Burning Brakes
Thread Starter
 
Coopduc's Avatar
 
Join Date: Mar 2017
Location: Asheville NC
Posts: 854
Received 256 Likes on 135 Posts
Default

That’s my guess also. I just hope the crank isn’t damaged.


Quick Reply: My roller



All times are GMT -3. The time now is 08:46 PM.