soft plug leak--how to fix??? - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 05-09-2012, 05:52 PM
Registered User
 
Last photo:
Join Date: Oct 2006
Location: pennsylvania
Posts: 1,091
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
soft plug leak--how to fix???

I have a soft plug on the side of the block leaking. I have replaced it,but still leaks,because the block is corroded somewhat where the soft plug goes in. this engine takes the type that is like a cone-shape and you dent the middle of it to make it expand and seal. Is there some type of sealer for this application? I don't want to add stop leak to the cooling system

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 05-09-2012, 07:07 PM
Registered User
 
Last photo:
Join Date: Oct 2006
Location: pennsylvania
Posts: 1,091
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
This is not a pissing leak,just a seeping one The plug is a new brass one and to replace it with the engine in the car is next to impossible. If I drain the coolant and dry the area,is there anything I can put on from the outside to stop the leak?
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 05-09-2012, 08:57 PM
327NUT's Avatar
Registered User
 
Last photo:
Join Date: Dec 2004
Location: So. Utah
Age: 67
Posts: 3,232
Wiki Edits: 0

Thanks: 0
Thanked 70 Times in 64 Posts
If you can't get that one to seal they make a rubber expansion type plug that fits the hole. Install in the hole and tighten the nut in the middle which expands the rubber. If the block is that corroded you better look at the others also.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 05-09-2012, 09:03 PM
S10 Racer's Avatar
http://www.warsprints.com
 

Last journal entry: W.A.R. (Wingless Auto Racing) Sprint Car Racing
Last photo:
Join Date: Nov 2007
Location: At The Dirt Tracks
Age: 55
Posts: 1,881
Wiki Edits: 0

Thanks: 3
Thanked 59 Times in 54 Posts
Quote:
Originally Posted by yragat
This is not a pissing leak,just a seeping one The plug is a new brass one and to replace it with the engine in the car is next to impossible. If I drain the coolant and dry the area,is there anything I can put on from the outside to stop the leak?
You're not going to seal it up by applying anything to the outside of it. The best way (and I know you don't want to hear this) is to remove it, clean and dry the hole. Apply Permatex to the plug and reinstall.
They make an expandable plug also (picture attached). It has a rubber seal that is inserted in the hole and then you tighten it up with a wrench to expand it. This is the best fix without pulling he motor.
Attached Images
File Type: bmp untitled.bmp (35.7 KB, 46 views)
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 05-09-2012, 09:15 PM
Registered User
 
Last photo:
Join Date: Oct 2006
Location: pennsylvania
Posts: 1,091
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I don't think the expandable type would work.The seat is only about 1/8" deep it takes this type soft plug.(see pic)
Attached Thumbnails
Click image for larger version

Name:	DSCN3533.JPG
Views:	52
Size:	634.9 KB
ID:	65322  
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 05-09-2012, 09:23 PM
S10 Racer's Avatar
http://www.warsprints.com
 

Last journal entry: W.A.R. (Wingless Auto Racing) Sprint Car Racing
Last photo:
Join Date: Nov 2007
Location: At The Dirt Tracks
Age: 55
Posts: 1,881
Wiki Edits: 0

Thanks: 3
Thanked 59 Times in 54 Posts
Quote:
Originally Posted by yragat
I don't think the expandable type would work.The seat is only about 1/8" deep it takes this type soft plug.(see pic)
What type of motor? Never seen a freeze plug like that, must be an import.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 05-09-2012, 09:25 PM
Registered User
 
Last photo:
Join Date: Oct 2006
Location: pennsylvania
Posts: 1,091
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
1960 Cadillac!
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 05-09-2012, 09:28 PM
S10 Racer's Avatar
http://www.warsprints.com
 

Last journal entry: W.A.R. (Wingless Auto Racing) Sprint Car Racing
Last photo:
Join Date: Nov 2007
Location: At The Dirt Tracks
Age: 55
Posts: 1,881
Wiki Edits: 0

Thanks: 3
Thanked 59 Times in 54 Posts
Quote:
Originally Posted by yragat
1960 Cadillac!
Never would have guessed that.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 05-10-2012, 07:28 AM
Registered User
 
Last wiki edit: General Motors transmissions Last photo:
Join Date: Mar 2006
Location: near Yellowstone park
Posts: 4,262
Wiki Edits: 27

Thanks: 11
Thanked 247 Times in 232 Posts
expansion plug ?

I've had expansion plugs blow out BUT never Have had an engine block heater leak. , they use a metal cross bar inside the block. that the allen screw tightens into. We have a lot of vehicles, tractors, forklift, etc with block heaters, Just had to replace one on the Backhoe, there was ice on the water other morning and the diesels like to be warm. some one wire a household plug up to the farm pump, 220v, burned out the heating element.

Last edited by timothale; 05-10-2012 at 07:35 AM.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Soft plug leaking on rebuilt 406 Chevy heathj1 Engine 6 11-10-2011 05:10 PM
engine soft plug question knighthawk Engine 0 02-13-2011 10:24 AM
Exhaust leak..will this fix it??? Z-Money Pit Engine 3 09-28-2006 06:03 AM
? about the soft plug's in my 350 sbc bowtieorbust Engine 3 07-04-2004 07:41 PM
How To Fix A Leak F-1Rodder Engine 4 01-23-2003 09:37 AM


All times are GMT -6. The time now is 03:50 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.