Need a little Upper Intake advice.
Senior Member
Posts like a Turbo
Joined: Apr 2004
Posts: 210
Likes: 0
From: Sheridan Wyoming
-oops, sorry I forgot to mention, that you will have to scroll over to the far right of the over-sized picture to see the old gasket. (the one on the left is the Fel-Pro replacement, and the one in the middle is the new GM replacement.)
Junior Member
Joined: Mar 2003
Posts: 1
Likes: 5
From: Purgatory
Originally Posted by 57chevythunder
Just re-torque the bolts? Here is link that shows the condition of my gaskets. Now you really have me wondering if maybe it could be possible that inadequate squeeze on the gaskets could have started the whole process of deterioration. Hmmm,,, maybe. However, as you can see from the picture how bad my gaskets were, they were definitely way beyond just re-torqueing.
http://www.mike.vcn.com/bonneville/gaskets.jpg
As for me, whenever I have a Series II down for plenum replacement, I'm DARN SURE going to go that easy next step further, and replace the lower gaskets as well.
-then, maybe re-checking the torque a few months down the road would be a good idea?? Heck, I don't know. I do know that you can't get to all the bolts on the manifold, without having the plenum off, and I'd be a little spooked about tightening some, and not the others. (-I think that would really be inviting trouble)
http://www.mike.vcn.com/bonneville/gaskets.jpg
As for me, whenever I have a Series II down for plenum replacement, I'm DARN SURE going to go that easy next step further, and replace the lower gaskets as well.
-then, maybe re-checking the torque a few months down the road would be a good idea?? Heck, I don't know. I do know that you can't get to all the bolts on the manifold, without having the plenum off, and I'd be a little spooked about tightening some, and not the others. (-I think that would really be inviting trouble)
Thread Starter
Senior Member
Certified GM nut
Joined: Feb 2004
Posts: 2,099
Likes: 1
From: CT
gasket
Yes the wife does short trips 2-4 miles and works a couple blocks away.
Looking at the gasket pictures I can see the failure near the center bank.
The middle GM gasket looks like they beefed up the amount of silicone in it.
Gmpartsdirect lists it for $30. Maybe I'll go with it.
The re-torquing I was referring to was a post on the BC where the upper plenum was removed already and the lower intake was found to have loose bolts especially the hidden ones on the ends. They just re-torqued them. I think it was in one of the top stickys.
Was all set to do the job this week but forgot I have to report to Jury duty
on Thurs. and will be out of town on the weekend. Rain today.
Gives me time to look for a lower gasket.
Looking at the gasket pictures I can see the failure near the center bank.
The middle GM gasket looks like they beefed up the amount of silicone in it.
Gmpartsdirect lists it for $30. Maybe I'll go with it.
The re-torquing I was referring to was a post on the BC where the upper plenum was removed already and the lower intake was found to have loose bolts especially the hidden ones on the ends. They just re-torqued them. I think it was in one of the top stickys.
Was all set to do the job this week but forgot I have to report to Jury duty
on Thurs. and will be out of town on the weekend. Rain today.
Gives me time to look for a lower gasket.
Thread
Thread Starter
Forum
Replies
Last Post
GunsOfNavarone
General GM Chat
4
Nov 26, 2014 12:45 PM