Notices
993 Forum 1995-1998

Strange sound from rebuilt engine...

Thread Tools
 
Search this Thread
 
Old 02-26-2013, 01:50 PM
  #256  
geolab
Rennlist Member
 
geolab's Avatar
 
Join Date: May 2006
Location: Paris
Posts: 3,031
Received 173 Likes on 119 Posts
Default

particles' bronze color reminds me of two internals, rod small bearings and valve guides. And since there is oil on top of cylinders, just thinking of the latter
Old 02-26-2013, 01:52 PM
  #257  
e3photo
Three Wheelin'
 
e3photo's Avatar
 
Join Date: Jun 2009
Location: Franklin, Tenn.
Posts: 1,553
Likes: 0
Received 1 Like on 1 Post
Default

Does the debris actually appear as shiny copper, or is it the photo? Wish I was closer,as I would give you a hand. Good luck with it.

Emerald
Old 02-26-2013, 02:04 PM
  #258  
Vorsicht
Burning Brakes
Thread Starter
 
Vorsicht's Avatar
 
Join Date: Feb 2010
Location: SF Bay Area, CA
Posts: 1,139
Received 19 Likes on 16 Posts
Default

Originally Posted by e3photo
Does the debris actually appear as shiny copper, or is it the photo? Wish I was closer,as I would give you a hand. Good luck with it.

Emerald
The appearance is silver to my eye like the large rod bearings (which were new with this rebuild.)
Old 02-26-2013, 02:23 PM
  #259  
Vorsicht
Burning Brakes
Thread Starter
 
Vorsicht's Avatar
 
Join Date: Feb 2010
Location: SF Bay Area, CA
Posts: 1,139
Received 19 Likes on 16 Posts
Default

Filter Cutter ordered, I should have it tomorrow.
Old 02-26-2013, 05:05 PM
  #260  
berni29
Pro
 
berni29's Avatar
 
Join Date: Oct 2009
Location: England, Beckenham
Posts: 557
Received 4 Likes on 4 Posts
Default

Hi Peter

I really hope that things are not as bad as they seem to look. I rebuilt my 993's top end last year and have for various reasons not had the chance to actually drive the car properly since. I am giving the car it's first proper outing tomorrow. My issues have been oil leak related. I really feel for you and am hoping for a good outcome.

Berni
Old 02-26-2013, 05:15 PM
  #261  
Vorsicht
Burning Brakes
Thread Starter
 
Vorsicht's Avatar
 
Join Date: Feb 2010
Location: SF Bay Area, CA
Posts: 1,139
Received 19 Likes on 16 Posts
Default

Originally Posted by berni29
Hi Peter

I really hope that things are not as bad as they seem to look. I rebuilt my 993's top end last year and have for various reasons not had the chance to actually drive the car properly since. I am giving the car it's first proper outing tomorrow. My issues have been oil leak related. I really feel for you and am hoping for a good outcome.

Berni
Thank you! Good luck with your ride...
Old 02-26-2013, 05:37 PM
  #262  
LimeyBoy
Rennlist Member
 
LimeyBoy's Avatar
 
Join Date: Feb 2008
Location: Michigan
Posts: 739
Received 206 Likes on 123 Posts
Default

Can't offer any advice or help Peter, but watched this intently from post 1 and been rooting for you all the way.
Old 02-26-2013, 05:40 PM
  #263  
Vorsicht
Burning Brakes
Thread Starter
 
Vorsicht's Avatar
 
Join Date: Feb 2010
Location: SF Bay Area, CA
Posts: 1,139
Received 19 Likes on 16 Posts
Default

Originally Posted by LimeyBoy
Can't offer any advice or help Peter, but watched this intently from post 1 and been rooting for you all the way.
Thanks! We'll get there..
Old 02-28-2013, 03:09 PM
  #264  
Vorsicht
Burning Brakes
Thread Starter
 
Vorsicht's Avatar
 
Join Date: Feb 2010
Location: SF Bay Area, CA
Posts: 1,139
Received 19 Likes on 16 Posts
Default

Update: A Tale of Two Filters

Cut open the filters with the appropriate tool. Photos below. Just a couple of notes first. I will show this in several posts as there are a bunch of pictures.

1. The large filter has been in the car for the last 800 miles (pre-rebuild use).
2. The small filter is brand new (post rebuild use only).
3. On visual inspection the small filter had very little metal - a few tiny particles found.
4. On visual inspection the large filter had many specs the largest of which was about 1/8 inch long. There were thousands, most very tiny.
5. The large filter has what looks like little pieces of plastic - could this be loctite 574, something else? See pic 4.
6. I used two magnets: small filter magnet is 1/4 inch diameter. Large filter magnet is 1/2 inch diameter.
Attached Images      
Old 02-28-2013, 03:16 PM
  #265  
Vorsicht
Burning Brakes
Thread Starter
 
Vorsicht's Avatar
 
Join Date: Feb 2010
Location: SF Bay Area, CA
Posts: 1,139
Received 19 Likes on 16 Posts
Default

Continued from previous post.....
Attached Images    

Last edited by Vorsicht; 05-18-2013 at 07:32 PM.
Old 02-28-2013, 03:20 PM
  #266  
Vorsicht
Burning Brakes
Thread Starter
 
Vorsicht's Avatar
 
Join Date: Feb 2010
Location: SF Bay Area, CA
Posts: 1,139
Received 19 Likes on 16 Posts
Default

Page 3 continued....
Attached Images   
Old 02-28-2013, 03:35 PM
  #267  
axl911
Drifting
 
axl911's Avatar
 
Join Date: Aug 2002
Location: Dallas, TX
Posts: 2,559
Likes: 0
Received 8 Likes on 8 Posts
Default

Is this right???

The large filter is for oil coming back from the engine. If there is engine issue, it would be caught by this filter.

The smaller filter is for oil coming from the tank into the filter.
Old 02-28-2013, 03:39 PM
  #268  
Mike J
Addict
Lifetime Rennlist
Member
 
Mike J's Avatar
 
Join Date: May 2001
Location: Vancouver, BC
Posts: 8,362
Received 66 Likes on 55 Posts
Default

Those are large pieces, bigger than I would have expected, especially since all you need to wear in was cams, rockers and guides. I did not split the filter on my rebuild, but the oil I dumped had lots of particles in it, but non that were this large that I found. Maybe Steve or someone can comment.

Well, engine is out so you might as well dig in. How is the disassembly going?

Cheers,

Mike
Old 02-28-2013, 03:41 PM
  #269  
Mike J
Addict
Lifetime Rennlist
Member
 
Mike J's Avatar
 
Join Date: May 2001
Location: Vancouver, BC
Posts: 8,362
Received 66 Likes on 55 Posts
Default

Originally Posted by axl911
Is this right???

The large filter is for oil coming back from the engine. If there is engine issue, it would be caught by this filter.

The smaller filter is for oil coming from the tank into the filter.
Yup, and since he has picked up particles in the large filter, its stuff from the engine, not the tank.
Old 02-28-2013, 04:00 PM
  #270  
Vorsicht
Burning Brakes
Thread Starter
 
Vorsicht's Avatar
 
Join Date: Feb 2010
Location: SF Bay Area, CA
Posts: 1,139
Received 19 Likes on 16 Posts
Default

Originally Posted by Mike J
Those are large pieces, bigger than I would have expected, especially since all you need to wear in was cams, rockers and guides. I did not split the filter on my rebuild, but the oil I dumped had lots of particles in it, but non that were this large that I found. Maybe Steve or someone can comment.

Well, engine is out so you might as well dig in. How is the disassembly going?

Cheers,

Mike
Plus the large end bearings on the rods. What about the idea that this could have come from pre-rebuild? The large rod bearings were very worn down. Not sure if this could have played into this - 800 miles is not much.

I am down to the long block sitting on a furniture dolly, exhaust removed. Waiting to coordinate 3 people to help me lift it up on to engine stand. I tried w/ me and one other. Too heavy. I think I will continue on and remove/inspect the rockers, Cams, the Cam Tower/Head assembly as a unit. I find having it on a stand is soooo much easier though so I might wait.


Quick Reply: Strange sound from rebuilt engine...



All times are GMT -3. The time now is 11:17 AM.