• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

Oil Galley Plug Blew Out

  • Thread starter Thread starter duo_z
  • Start date Start date May 16, 2012

duo_z

Member
Jan 24, 2009
78
0
6
May 16, 2012
#1
  • May 16, 2012
  • #1
So finally after many questions and much research I had finished building my 289. I built a test stand, checked everything and hit the starter button. After a little trouble shooting and some tuning she would fire up with not even a half turn of the starter. She sounded sweet. During my enjoyment and happiness I noticed the oil pressure gauge not giving me a reading. So I shut it down and started troubleshooting everything from gauges, hook ups, and the engine it self. I found oil to coming out of the sensor extension, but not my push rods. So I pulled the dizzy and found the problem. An oil galley plug was laying on the lower dizzy support. So half sad and half pissed I started ripping her apart. So I'm wondering could it have been I didn't push it in deep enough, is there something I should look for that could have caused it otherwise?
 

iskwezm

10 Year Member
May 24, 2005
4,159
20
79
Rowland Heights,California
May 16, 2012
#2
  • May 16, 2012
  • #2
did you use any sealant on the plug?
 

duo_z

Member
Jan 24, 2009
78
0
6
May 16, 2012
#3
  • May 16, 2012
  • #3
iskwezm said:
did you use any sealant on the plug?
Click to expand...
I did use sealant.
I would also like to note that I did prime the system using a drill drive and I didn't find anything odd. The oil seemed to make it to everything it should have.
 

duo_z

Member
Jan 24, 2009
78
0
6
May 16, 2012
#4
  • May 16, 2012
  • #4
Also I am talking about the press in kind, not the threaded ones.
 

dennis112

15 Year Member
May 15, 2005
1,561
36
79
Amish Wonderland of Central PA.
May 16, 2012
#5
  • May 16, 2012
  • #5
Install a new one with locktite and then use a chisel to stake it in place. Also stake the other ones that you can access.
 

duo_z

Member
Jan 24, 2009
78
0
6
May 16, 2012
#6
  • May 16, 2012
  • #6
Sounds like a good idea, I should have thought about that when I put them in in the first place. Hopefully I can do that this weekend and have it back up and running before next week. And if all goes well I will post some pictures and a video.

Thanks
 

JonK

Member
Jun 6, 2007
276
0
16
Nashville (Smyrna), TN
May 16, 2012
#7
  • May 16, 2012
  • #7
I hope you staked or 'peened' the one at the rear gallery crossover - rear center under the intake. A shop rebuilt a sbf for me years ago and didn't dent it hard enough so it would flip up and my oil pressure would drop.
Jon
 

duo_z

Member
Jan 24, 2009
78
0
6
May 17, 2012
#8
  • May 17, 2012
  • #8
Just out of curiosity should I have done that to the freeze plugs too?
 

iskwezm

10 Year Member
May 24, 2005
4,159
20
79
Rowland Heights,California
May 17, 2012
#9
  • May 17, 2012
  • #9
freeze plugs dont have the same amount of pressure against them. I only staked the oil plugs
 

horse sence

15 Year Member
Nov 29, 1999
12,207
8,046
233
Wile Coyote's stunt double
May 17, 2012
#10
  • May 17, 2012
  • #10
i always thread and use thread in plugs ,you can do it your self .it isnt hard
to do ,just need a pipe tap and screw in allen head plugs,do it before you start your
build you dont want shavings in your oil galleys, wouldnt do it now unless you are
tearing it back down all the way, i would use lock tite on the press in plugs, new ones
not the old ones ,clean the holes out good and oil free first and then stake the plugs
as well. for the freeze plugs seal them as well i always use the deep brass plugs
you should never have a problem with them,if the short freeze plugs arnt drived in
strait they will leak
 

bartl

Active Member
Feb 4, 2001
218
8
29
West Rutland, Vermont
May 20, 2012
#11
  • May 20, 2012
  • #11
If you thread them yourself, either do it before the engine gets tanked, or make sure you get every last filing out before assembly.
 
You must log in or register to reply here.

Similar threads

H
Ongoing Battle With Hydraulic Lifters
  • hailer06
  • Jun 8, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
7
Views
219
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 9, 2026
Noobz347
Oil Galley Plug (the one rear of intake)
  • doctorj357
  • May 17, 2024
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
3
Views
1K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 17, 2024
doctorj357
Drivetrain 83’ Glx convertible C5 Trans help!
  • JacksonJared2113
  • Dec 25, 2025
  • Fox 5.0 Mustang Tech
Replies
2
Views
368
Fox 5.0 Mustang Tech Dec 26, 2025
JacksonJared2113
O
Progress Thread LTD-ing
  • OX1
  • Mar 15, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
8
Views
334
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Apr 6, 2026
OX1
O
Place to Avoid: Jamison Auto Group in Gulfport, MS
  • D Durden
  • Oct 20, 2025
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • 2 3
Replies
45
Views
2K
1965 - 1973 Classic Mustangs -General/Talk- Feb 4, 2026
nickyb
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific 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?