350 rebuild - gone wrong?

Thread Tools
 
Search this Thread
 
Old May 11, 2013 | 06:05 PM
  #1  
Octania's Avatar
Thread Starter
Registered User
 
Joined: Dec 2011
Posts: 7,286
350 rebuild - gone wrong?

Not my car or motor
Boneyard has '69 post car
'69 or '70 engine

I got the heads off to find nothing remarkable on the RH side, just nice and clean. Newish pushrods. Factory looking pistons. LH bores look fine as can be. Double roller timing chain looks newish, so might have a new cam to go with those new looking lifters and pushrods.

13131_CBY_40LHBank1357_zpscbacb01f.jpg

13131_CBY_41nooversize_zps3d1862a3.jpg

Then I take a peek at the LH head to verify condition.
Hmmmm... evidently we were burning a little oil on the LH bank. Must have been interesting to see this thing run.

13131_CBY_55_zpse98c14a9.jpg

13131_CBY_57_zpsc3f03c67.jpg

13131_CBY_53_zpse0266bb7.jpg

13131_CBY_51_zpsec36ae63.jpg
Old May 11, 2013 | 06:16 PM
  #2  
coppercutlass's Avatar
Chevy budget Olds powered
 
Joined: Jul 2011
Posts: 8,638
From: Elgin, Illinois
Oh god !!!!!!!!!!
Old May 11, 2013 | 06:32 PM
  #3  
Sampson's Avatar
Registered User
 
Joined: Dec 2012
Posts: 1,605
From: Fuquay Varina NC
Holy crap
Old May 11, 2013 | 06:44 PM
  #4  
MDchanic's Avatar
Connoisseur d'Junque
 
Joined: Sep 2010
Posts: 21,183
From: The Hudson Valley
Those plugs look a little grimy.

I'd wager three of them wouldn't fire at all.

Interestingly, they look like Bosch "Platin"s to me, which would mark this as a "rebuild" within the past 20 years or so.

Looks to me like he was barking up the wrong tree - instead of the platinum plugs, he should have used Leroy "Fires in Oil!" plugs.

- Eric
Old May 11, 2013 | 07:29 PM
  #5  
Octania's Avatar
Thread Starter
Registered User
 
Joined: Dec 2011
Posts: 7,286
Here's what I don't get

1) RH bank shows no such buildup

2) How is the spark plug carboned up like that... but the piston is almost as clean as the day it was installed?

Valley clean, engine obviously has just been gone thru.

btw if anyone needs a core 350 to rebuild, it probably has the nodular crank...

'69 post car with manual brakes...

"disk brakes" says the pedal pad
The drumless hubs on the front with the shoes now exposed tell a different story... Anyone need the separate type hubs?
Old May 11, 2013 | 08:27 PM
  #6  
oldcutlass's Avatar
Administrator
 
Joined: Oct 2009
Posts: 42,475
From: Poteau, Ok
I would say manifold gasket not installed correctly.
Old May 12, 2013 | 04:25 AM
  #7  
coppercutlass's Avatar
Chevy budget Olds powered
 
Joined: Jul 2011
Posts: 8,638
From: Elgin, Illinois
I guess no one ever checked the plugs lol.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Lonestar
General Discussion
6
Feb 28, 2015 08:43 AM
1965F85_scholten
Small Blocks
52
Oct 11, 2013 05:49 AM
70cutty
Small Blocks
50
Jun 26, 2013 04:53 PM
Warhead
Small Blocks
8
Dec 22, 2010 06:41 AM
Carleta
Bravada
2
Sep 9, 2006 03:21 PM




All times are GMT -7. The time now is 07:39 AM.