• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Broken valve cover bolt

  • Thread starter Thread starter 95Cobra302
  • Start date Start date Oct 25, 2011

95Cobra302

Founding Member
Apr 9, 2002
394
3
19
Daytona Beach, FL
Oct 25, 2011
#1
  • Oct 25, 2011
  • #1
Just snapped off the middle lower valve cover bolt when torquing them in. Anyone think it might be ok and not leak??? Going to be a few days before I start it up anyway, so I can't find out right now. I'm so pissed!!
 

skunk21

Active Member
May 22, 2007
1,203
3
36
Taxachusetts
Oct 25, 2011
#2
  • Oct 25, 2011
  • #2
how tight did you go? they are just about 5ftlbs or hand tight, chances are high it will leak though on the bottom side and once the motors heats up or goes through some drive cycles the chances are even higher. I'll knock on wood for you that some of the bolt is sticking out so you can grab it and get it out if not ez out time. best of luck.
 

90lxcoupe

20+ Year Stangneter
Oct 7, 2003
3,596
350
134
Oct 26, 2011
#3
  • Oct 26, 2011
  • #3
What gasket are you using?

The spot where you broke the bolt makes it questionable if it will leak or not. I broke a tap off in the uper corner, and i use the FMS rubber gaskets with a steel core, and it does not leak. How bad is the bolt broke off? You could try getting a dremel and slotting the shaft of the bolt and using a flathead to remove it.
 

VibrantRedGT

"STANGNET'S PENGUIN SMACKER"
15 Year Member
Nov 29, 1999
14,679
424
154
Boca Raton, Florida
Oct 26, 2011
#4
  • Oct 26, 2011
  • #4
I bet there not real tight. Like mentioned they don't require much torque which is why you broke them. If you can take a dremel and make slot on the broken bolt you could use a flat head screwdriver to remove them (I've done this before).
 

95Cobra302

Founding Member
Apr 9, 2002
394
3
19
Daytona Beach, FL
Oct 26, 2011
#5
  • Oct 26, 2011
  • #5
Torque wrench was set at 10 ft lbs. Never used one before on valve covers and now I know why!! Im using the ford racing reusable gaskets. There is really no part sticking out at all, it's about level with the head.
 
J

junkyardwarrior

Well-Known Member
Jan 10, 2011
400
113
63
Oct 26, 2011
#6
  • Oct 26, 2011
  • #6
Sometimes using a tiny punch with a hammer to turn the broken bolt a little at a time will get enough sticking out to grab with pliers. Worth a try. If not, drill and extract it. I'd bet it'll back out with a punch & hammer. Might even get a sharpened flat screwdriver to grab enough of the edge and turn it a little. Best thing to do is to step back & think about it before getting frustrated...which I admit is tough to do with a broken fastener!
 

95Cobra302

Founding Member
Apr 9, 2002
394
3
19
Daytona Beach, FL
Oct 27, 2011
#7
  • Oct 27, 2011
  • #7
How do I drill and extract it?? Just drill a bit into it and then use a vise grip or something and turn it out??
 
B

BrokenPony

New Member
Aug 12, 2010
15
0
1
Oct 28, 2011
#8
  • Oct 28, 2011
  • #8
Buy an extractor? Goes in like a screw but in reverse and then once it gets enuff of a grip it spins out the broken bolt.
 

Kdubslugga

Active Member
Jun 7, 2003
1,515
3
38
Akron, OH
Oct 29, 2011
#9
  • Oct 29, 2011
  • #9
Been there done that my friend. You'll never do it again though trust me. Your gonna need to drill it out like stated. Just be extra careful to start your drill in the center of the broken off bolt, take your sweet time. Drill til its about a 1/4 inch deep maybe a bit less and use the extractor to turn that sum bitch out.
 
You must log in or register to reply here.

Similar threads

T
Fox *Solved* Motor mount bolt question
  • TDM389
  • Mar 21, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
3
Views
229
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Mar 22, 2026
TDM389
T
S
Best place to source power steering parts for a '67? (control valve, ram, hoses)
  • SophiaTatum
  • Jun 15, 2026
  • Classic Mustang Specific Tech
Replies
2
Views
53
Classic Mustang Specific Tech Jun 18, 2026
SophiaTatum
S
Paint and Body Rotten moon roof trim
  • Teen'93stang5.0
  • Apr 14, 2026
  • Fox 5.0 Mustang Tech
Replies
3
Views
115
Fox 5.0 Mustang Tech Apr 15, 2026
Teen'93stang5.0
Drivetrain 83’ Glx convertible C5 Trans help!
  • JacksonJared2113
  • Dec 25, 2025
  • Fox 5.0 Mustang Tech
Replies
2
Views
354
Fox 5.0 Mustang Tech Dec 26, 2025
JacksonJared2113
Any 1 find any decent blackfriday sales for Foxbody or car stuff?
  • rednotch
  • Nov 29, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
18
Views
729
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Dec 19, 2025
rednotch
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?