2nd Generation S-series (1995-2005) Tech Discuss 2nd generation S-series (1995-2005) general tech topics here.

Stuck exhaust valve:

Thread Tools
 
Search this Thread
 
  #31  
Old 01-21-2015, 10:02 AM
LannyL81's Avatar
Super Member
Join Date: Oct 2008
Location: Tucson, Arizona
Posts: 1,748
LannyL81 is on a distinguished road
Default

YES....valve guides are a must!!! I had a bronze valve guide on an exhaust valve sieze up on an SBC before. But would still use the bronze over just having the guides knurled.
 
  #32  
Old 01-22-2015, 08:30 PM
Possum 6991's Avatar
New Member
Thread Starter
Join Date: Nov 2014
Location: Imperial, MO
Posts: 61
Possum 6991 is on a distinguished road
Default

Pictures of the top of the piston on #3 cylinder. Sorry I did not bring it to the top but the distributor is removed and I did not want to rotate the engine yet. The valve is not shiny because I had to drive the vehicle in this shape to get back home.
 
Attached Thumbnails Stuck exhaust valve:-cylinder-3.jpg   Stuck exhaust valve:-cylinder-3.2.jpg  
  #33  
Old 01-24-2015, 07:31 AM
LannyL81's Avatar
Super Member
Join Date: Oct 2008
Location: Tucson, Arizona
Posts: 1,748
LannyL81 is on a distinguished road
Default

Thoses pictures look familar as when I took the heads off of that SBC.

I think the piston is fine, although I would remove any sharp edges around the impact.

Let us know how the rebuilt heads install goes.
 
  #34  
Old 01-24-2015, 10:28 PM
Possum 6991's Avatar
New Member
Thread Starter
Join Date: Nov 2014
Location: Imperial, MO
Posts: 61
Possum 6991 is on a distinguished road
Default

The heads have been reworked and I will be reinstalling tomorrow.
I noticed that the cylinder walls still had the cross hatching honing marks still visible and no wear ridge at the top of the cylinder. This vehicle has 252K miles on it, I would not think that the cross hatch honing marks would still be visible after this many miles.
 
Attached Thumbnails Stuck exhaust valve:-cylinder-cross-hatch.jpg   Stuck exhaust valve:-cylinder-cross-hatch-2.jpg   Stuck exhaust valve:-left-head-rebuilt.jpg   Stuck exhaust valve:-left-head-rebuilt-2.jpg   Stuck exhaust valve:-left-head-rebuilt-3.jpg  

  #35  
Old 01-25-2015, 08:04 AM
rxjimmy's Avatar
Starting Member
Join Date: Oct 2014
Posts: 119
rxjimmy is on a distinguished road
Default

I would not think that the cross hatch honing marks would still be visible after this many miles
I saw the same on my engine. but I was only at 90,000 miles. 252k is amazing!
 
  #36  
Old 01-25-2015, 11:30 AM
07nhbpsi's Avatar
Junior Member
Join Date: Sep 2010
Posts: 329
07nhbpsi is on a distinguished road
Default

Originally Posted by Possum 6991
The heads have been reworked and I will be reinstalling tomorrow.
I noticed that the cylinder walls still had the cross hatching honing marks still visible and no wear ridge at the top of the cylinder. This vehicle has 252K miles on it, I would not think that the cross hatch honing marks would still be visible after this many miles.
That's awesome!!! Now, do u wanna put mine back together???? Lol I too have a valve sticking (exhaust) in number 1 cyl. Damn misfire was driving me crazy!!!!! Thx to the captain he pointed me in the right direction...... keep us updated on how it turns out!!!! And of course pictures are always welcomed......haha
 
  #37  
Old 01-27-2015, 05:50 PM
Possum 6991's Avatar
New Member
Thread Starter
Join Date: Nov 2014
Location: Imperial, MO
Posts: 61
Possum 6991 is on a distinguished road
Default

Well, it's finally back together . It has some hesitation if I do a fast RPM increase. I believe that I can correct this by adjusting the Distributor. See the picture for info from scan tool. I have not tried to adjust it yet, hopefully I won't have to modify the hold down bracket like Captain mentioned in:
The distributor hold down needs to be removed from the distributor and modified, to make the distributor fully adjustable. You'll need to cut the OEM hold down "arms" so the distributor will turn with the hold down installed, (before you tighten it down). The "arms" on the hold down fit around the square part of the distributor housing so the distributor can't turn, making it non-adjustable. The distributor needs to be able to turn to adjust camshaft retard. You can test fit it before you install it. The hold down must still be able to tighten down against the base of the distributor to keep it from turning after you adjust camshaft retard. When you're done, the bracket will look similar to this: Mr. Gasket Distributor Hold-Down Clamp 1009: Advance Auto Parts If you cut too much off, this is the part you'll need
I'll post back with results. Thanks everyone for the help.
 
Attached Thumbnails Stuck exhaust valve:-scan-screen-shot.jpg  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
marksoftball
2nd Generation S-series (1995-2005) Tech
8
11-29-2014 09:27 PM
Chevy33
Engine & Transmission
0
03-25-2012 11:52 AM
89Recon
1st Generation S-series (1983-1994) Tech
1
10-22-2011 05:50 PM
IndianaBlazerGirl
2nd Generation S-series (1995-2005) Tech
5
09-06-2011 06:22 PM
bigdaddykane93
Engine & Transmission
3
12-16-2010 04:28 PM



Quick Reply: Stuck exhaust valve:



All times are GMT -5. The time now is 08:15 PM.