6.9 piston
Thread Starter
|
Junior User
Joined: May 2008
Posts: 79
Likes: 0
6.9 piston
I am replacing the head gasket on my 86 6.9. the piston in the front of the right bank looks like someone took a meat tenderizer to it. As far as I can tell from a visual examination it doesn't have any cracks in it but it just looks ugly.
Any idea what might have caused this? Should I R & R this piston? Or is there some way of repairing it if it needs it(preferably without removing it)? I have some pics but don't know how to upload them into the forum yet but I could email them to someone.
Any idea what might have caused this? Should I R & R this piston? Or is there some way of repairing it if it needs it(preferably without removing it)? I have some pics but don't know how to upload them into the forum yet but I could email them to someone.
Posting Guru
Joined: Jul 2004
Posts: 1,627
Likes: 0
From: West Valley Utah
Sounds like a glow plug tip broke off at some time and wound up beating around the cylinder for a bit before getting blown out.
Far as the piston goes, depends on how picky you are, how long you plan on keeping the truck. Smooth out the high spots and put it back together. Run it till it needs a complete rebuild.
Far as the piston goes, depends on how picky you are, how long you plan on keeping the truck. Smooth out the high spots and put it back together. Run it till it needs a complete rebuild.
Posting Guru
Joined: Mar 2005
Posts: 1,701
Likes: 0
From: KY
Sounds like a glow plug tip broke off at some time and wound up beating around the cylinder for a bit before getting blown out.
Far as the piston goes, depends on how picky you are, how long you plan on keeping the truck. Smooth out the high spots and put it back together. Run it till it needs a complete rebuild.
Far as the piston goes, depends on how picky you are, how long you plan on keeping the truck. Smooth out the high spots and put it back together. Run it till it needs a complete rebuild.
I agree. Run it. It will be OK.
Thread Starter
|
Junior User
Joined: May 2008
Posts: 79
Likes: 0
Sounds like a glow plug tip broke off at some time and wound up beating around the cylinder for a bit before getting blown out.
Far as the piston goes, depends on how picky you are, how long you plan on keeping the truck. Smooth out the high spots and put it back together. Run it till it needs a complete rebuild.
Far as the piston goes, depends on how picky you are, how long you plan on keeping the truck. Smooth out the high spots and put it back together. Run it till it needs a complete rebuild.
Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
Does the piston look something like this?
You can probably get away with it, as long as there aren't any cracks. I chose to rebuild my 6.9 when that happened.
As long as the intake gasket isn't mangled, you can probably reused it. Just clean it up really good and use some gasket maker to reseal it.
You can probably get away with it, as long as there aren't any cracks. I chose to rebuild my 6.9 when that happened.
As long as the intake gasket isn't mangled, you can probably reused it. Just clean it up really good and use some gasket maker to reseal it.
Thread Starter
|
Junior User
Joined: May 2008
Posts: 79
Likes: 0
Does the piston look something like this?
You can probably get away with it, as long as there aren't any cracks. I chose to rebuild my 6.9 when that happened.
As long as the intake gasket isn't mangled, you can probably reused it. Just clean it up really good and use some gasket maker to reseal it.
You can probably get away with it, as long as there aren't any cracks. I chose to rebuild my 6.9 when that happened.
As long as the intake gasket isn't mangled, you can probably reused it. Just clean it up really good and use some gasket maker to reseal it.
