I have a big problem. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 06-07-2007, 07:40 PM   #1
Senior Member
Posts like a Corvette
Thread Starter
 
Join Date: Jul 2004
Location: Winnipeg, Manitoba, Canada
Posts: 1,445
Thanks: 0
Thanked 0 Times in 0 Posts
captainmiller is on a distinguished road
Default I have a big problem.

I was replacing a valve cover gasket. And, everything went fine until I was carefully tightening the bolts to 88 in-lbs as per my Haynes and two of the bolts broke off in the head.

What the **** do I do now.
captainmiller is offline   Reply With Quote
Old 06-07-2007, 07:48 PM   #2
Senior Member
Posts like a Corvette
 
Join Date: Feb 2007
Location: Sanford Michigan
Posts: 1,200
Thanks: 0
Thanked 0 Times in 0 Posts
crash93ssei is on a distinguished road
Default

Usually you can take the other bolts back off, and remove the valve cover. If there is enough of the bolt sticking out of the head, you can probably grab it with a pair of vice-grips or pliers and they should turn out pretty easily, as long as they are not cross-threaded.

If the bolts that broke, broke off during the final tightening, then all of the tension holding the bolt threads into the head should be relieved, because it is the head of the bolt that holds the tension against the threads on the bolt.

That would be where I would start, if that doesn't work, you could try an easy-out. I am sure other people will also have some ideas as well.
crash93ssei is offline   Reply With Quote
Old 06-07-2007, 07:51 PM   #3
Senior Member
True Car Nut
 
Join Date: Jan 2005
Posts: 3,295
Thanks: 0
Thanked 0 Times in 0 Posts
MyLittleBlackBird is on a distinguished road
Default

If you use an easy out, make sure you drill in the center of the bolts in question. You also do NOT want to break off an easy out. My understanding is that they are harder than the hubs of hell. If that fails, you can try drilling the hole out one size over and installing a heli-coil($20-40). I think they work for cast iron

If you want, I can try to snipe two bolts out of the valve cover out in my garage and ship them to you as replacements.(pm me if that'* the case)
MyLittleBlackBird is offline   Reply With Quote
Old 06-07-2007, 07:58 PM   #4
Senior Member
Posts like a Corvette
Thread Starter
 
Join Date: Jul 2004
Location: Winnipeg, Manitoba, Canada
Posts: 1,445
Thanks: 0
Thanked 0 Times in 0 Posts
captainmiller is on a distinguished road
Default

Yeah, I can't grip them with anything.

Some sort of screw extractor is nesseccary.
captainmiller is offline   Reply With Quote
Old 06-07-2007, 08:29 PM   #5
Senior Member
Posts like a Corvette
 
Join Date: Feb 2007
Location: Sanford Michigan
Posts: 1,200
Thanks: 0
Thanked 0 Times in 0 Posts
crash93ssei is on a distinguished road
Default

yup, try the easy out. usually available at locar hardware stores if you don't have them. get a drill bit slightly smaller then the bolt and drill it out some, maybe 1/4 inch, then try the easy out.

when drilling, be carefull and try not to hit the threads in the head.

hopefully that works
crash93ssei is offline   Reply With Quote
Old 06-07-2007, 08:33 PM   #6
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

I suspect you used the wrong torque wrench. There'* no way it would have broken at 88 in/lbs. Did you accidentally use ft/lbs? If so, a screw extractor (easy out) may not be good enough.

Which two bolts, and which cover? Are they side-by-side, or directly across from each other?
willwren is offline   Reply With Quote
Old 06-07-2007, 10:14 PM   #7
Senior Member
Posts like a Corvette
Thread Starter
 
Join Date: Jul 2004
Location: Winnipeg, Manitoba, Canada
Posts: 1,445
Thanks: 0
Thanked 0 Times in 0 Posts
captainmiller is on a distinguished road
Default

Quote:
Originally Posted by willwren
I suspect you used the wrong torque wrench. There'* no way it would have broken at 88 in/lbs. Did you accidentally use ft/lbs? If so, a screw extractor (easy out) may not be good enough.

Which two bolts, and which cover? Are they side-by-side, or directly across from each other?
Good news, I got the screws out. Bad news all the dealers are closed and I need those bolts ASAP.

Bill. I am just as confused as you are. I used a brand new Mastercraft wrench I got for Christmas. It CLEARLY says TORQUE IN-LBS on the side. The scale goes up by increments of 20 in-lbs. So I moved the collar past 70, until the collar read 18. 70+18=88 in-lbs correct?

When I was tightening I did feel I was doing way more then 88 in-lbs. I originally had the first bolt done, and I THOUGHT I had reached the torque amount...I moved on to the second bolt and it just snapped. Thats when I realized the first one had broken as well, I didn't actually meet the torque specification.

This is my first time using a wrench that you set the torque value on. Is the wrench just not supposed to tighten once the torque value is met?

They were the top two bolts on the front cover.

Right now I'm thinking my torque wrench is defective.
captainmiller is offline   Reply With Quote
Old 06-07-2007, 10:21 PM   #8
Senior Member
True Car Nut
 
Join Date: Jan 2005
Posts: 3,295
Thanks: 0
Thanked 0 Times in 0 Posts
MyLittleBlackBird is on a distinguished road
Default

It should make a clicking or poping sound when you reach the set level of torque. That'* how all of the ones I've used work.
MyLittleBlackBird is offline   Reply With Quote
Old 06-07-2007, 10:26 PM   #9
Senior Member
Posts like a Corvette
Thread Starter
 
Join Date: Jul 2004
Location: Winnipeg, Manitoba, Canada
Posts: 1,445
Thanks: 0
Thanked 0 Times in 0 Posts
captainmiller is on a distinguished road
Default

Quote:
Originally Posted by MyLittleBlackBird
It should make a clicking or poping sound when you reach the set level of torque. That'* how all of the ones I've used work.
Well mine snapped the damn bolts before it did that...
captainmiller is offline   Reply With Quote
Old 06-07-2007, 10:27 PM   #10
Senior Member
Certified Car Nut
 
Join Date: Oct 2002
Posts: 11,307
Thanks: 0
Thanked 0 Times in 0 Posts
bonnie94ssei is on a distinguished road
Default

When I did my valve covers I set the tq to 19 ft/lb, even though I didn't agree with the specs that told me to set it there. I tightened a decent amount being careful, and KNEW something was wrong right away. I backed them off and then torqued them to 8 ft/lbs (96 in/lb).

The torque wrench should make a clicking sound and have some resistance when the torque is met. To break the bolts you must have had quite a bit of torque on them. I'm not sure what it would take to break them, but if I did the full 19 ft/lb I had set first, it felt like I could have broken them, or at least cracked the valve covers.
bonnie94ssei is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
BIG WHEELS, REALLY BIG, but there are alot of 3.8 on them to mike1053 General GM Chat 15 08-19-2007 07:54 PM
Big Move...BIg Renovations...Big Time! Jim W Lounge 32 06-16-2005 12:02 AM
Big guy....Big Car....Big Possibilities Way_2Fast_Way_2Furious Introductions for new members 10 05-25-2005 01:06 PM
I have a BIG problem, ssesc93 1992-1999 6 12-19-2003 12:50 PM
THE BIG BRAKE THEORY(MORE LIKE A BIG PROBLEM) PLEASE ADVISE 94SSEgold 1987-1991 3 08-24-2003 10:21 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 06:51 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.