Freeze plugs leaking... all of them. - 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 09-09-2010, 06:35 PM
Registered User
 
Last photo:
Join Date: May 2009
Location: Wichita KS
Posts: 325
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
Freeze plugs leaking... all of them.

Do brass freeze plugs have to heat cycle a few times or what? I bought a rebuild kit from summit for my 3.8 buick v6. Had the old block hot tanked. Cleaned up the freeze plug holes with scotch bright and laquer thinner and drove in the plugs with a socket. They all seemed to fit very snug. I'd assume I had the correct freeze plugs. They were the correct number of plugs and all fit well. Poured coolant in last night getting engine ready to fire and I notice my driver side plug is dripping. All my other freeze plugs have moist areas where you can tell are seeping out coolant around the bottom of them. Film is sticky I'm sure it's coolant.

What gives!

Thanks all!

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 09-09-2010, 07:59 PM
406 bug's Avatar
9.82 @ 139mph
 
Last wiki edit: Finding vacuum leaks Last photo:
Join Date: Nov 2007
Location: phoenix, arizona
Posts: 581
Wiki Edits: 1

Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by ForceFed86
Do brass freeze plugs have to heat cycle a few times or what? I bought a rebuild kit from summit for my 3.8 buick v6. Had the old block hot tanked. Cleaned up the freeze plug holes with scotch bright and laquer thinner and drove in the plugs with a socket. They all seemed to fit very snug. I'd assume I had the correct freeze plugs. They were the correct number of plugs and all fit well. Poured coolant in last night getting engine ready to fire and I notice my driver side plug is dripping. All my other freeze plugs have moist areas where you can tell are seeping out coolant around the bottom of them. Film is sticky I'm sure it's coolant.

What gives!

Thanks all!
I always use sealant- never any ploblems.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 09-09-2010, 08:10 PM
68NovaSS's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Working with chromed bolts
Last journal entry: New to me T-Bucket
Last photo:
Join Date: Sep 2002
Location: Nine Mile Falls, Washington
Posts: 5,217
Wiki Edits: 9

Thanks: 99
Thanked 130 Times in 121 Posts
I've always coated the block with Permatex, that brown horribly sticky stuff, then drove them in. No leaks.
__________________
Boost adds dignity to what would otherwise be a vulgar brawl...

Midnight Sun Street Rod Association
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 09-09-2010, 08:21 PM
Irelands child's Avatar
Registered User
 
Last wiki edit: Ford engine specifications Last photo:
Join Date: Jan 2005
Location: Upstate New York
Posts: 4,865
Wiki Edits: 8

Thanks: 13
Thanked 185 Times in 166 Posts
Sealant - almost any will work, but like the above post, the old Pematex Shellac sealant works about as well as any of the expensive exotics.

Get a bottle of Bars Leak. It will seal the freeze plugs. Run it for a while with just water, then drain the residual out, flush it a time or two and you should be good forever. The other alternative, pull the engine and replace them

Dave W
__________________
Irelands child
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 09-09-2010, 08:22 PM
Registered User
 
Last photo:
Join Date: May 2006
Location: Jax Fl
Posts: 383
Wiki Edits: 0

Thanks: 14
Thanked 4 Times in 2 Posts
Quote:
Originally Posted by 68NovaSS
I've always coated the block with Permatex, that brown horribly sticky stuff, then drove them in. No leaks.
Agreed! I always use that nasty sticky stuff that permatex makes (looks like what my ex-girlfriend's cat used to put in the litter box) and have never had a leak. OH OH You have already put them in and they are hard to get out without destroying them. But do not despair! The cool thing about brass is that it gets a patten (or patina) finish on it. That means it corrodes to a point and then stops. This layer of corrosion will interact with the cast iron of the block and act as natural sealant. If they are installed correctly and the leak is not too bad, just give them a few days and they will stop leaking and never leak again. I promise!
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 09-09-2010, 08:37 PM
Duntov's Avatar
Visit the NASCAR Hall of Fame
 
Join Date: Jun 2010
Location: Near Charlotte
Posts: 411
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Indian head

It'll stop leaking by itself probably, but I use Indian head or mix a bit of urethane industrial paint if it's convenient. Either one works I'm going to vote with Ireland in this case though.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 09-09-2010, 08:41 PM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
Permatex #2.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 09-09-2010, 08:48 PM
Registered User
 
Last photo:
Join Date: May 2006
Location: Jax Fl
Posts: 383
Wiki Edits: 0

Thanks: 14
Thanked 4 Times in 2 Posts
I used Bars for many many years and it is great stuff for farm tractors, cars made in the sixties/seventies and older semi tractors. With the newer small aluminum radiators and their small passages it can cause a problem and stop them up. Stay away from it for this application. The freeze plugs should stop leaking in a few days. Been there done that. If they are installed correctly in few days they will stop seeping, I promise!
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 09-09-2010, 10:04 PM
Registered User
 
Last photo:
Join Date: May 2009
Location: Wichita KS
Posts: 325
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
Before I noticed all of them were leaking I thought only one that was dripping. I tried to drive it in a tad and over did it. It was right up behind the mount and very hard to get to. Apparently a 3lb sledge was to much!

So I knocked one in... I'll try to fish it out and at least put that one in with some sealer. Unfortunately it is in a difficult area to remove it. Not sure if I can get it back out of the block with out taking the engine out.

Wish I would have asked you all before I got out the sledge... Ah well live and learn.

THANKS GUYS!
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 09-10-2010, 08:47 AM
zildjian4life218's Avatar
Listen and Learn
 
Last wiki edit: DIY junkyard electrical fan controller
Last journal entry: SBC 305 Twin Turbo
Last photo:
Join Date: Dec 2008
Location: WNY/Rochester, New York
Age: 25
Posts: 1,586
Wiki Edits: 7

Thanks: 44
Thanked 8 Times in 8 Posts
Anyone use copper gasket maker on the soft plugs? My machinist said he prefers it because silicon is slippery. But I mean everyone uses silicone so can't be too big of a deal. Ive done the copper spray on 4 motors so far and no problems.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 09-10-2010, 08:56 AM
V8 Super Beetle's Avatar
VW makes it, Chevy shakes it..
 
Last photo:
Join Date: Jan 2008
Location: Houston, TX
Age: 33
Posts: 1,245
Wiki Edits: 0

Thanks: 5
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by 68NovaSS
I've always coated the block with Permatex, that brown horribly sticky stuff, then drove them in. No leaks.
I used Permatex non-hardening sealer as well on all of the freeze plugs as well as the cam plug. No leaks whatsoever.
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 09-10-2010, 11:00 AM
Registered User
 
Last photo:
Join Date: May 2009
Location: Wichita KS
Posts: 325
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
Well I've been told to try everything from silver seal sealant (additive in the water) to plain salt and tap water to promote corrosion. I'm running a new (semi expensive at $280 alum radiator.) I really don't want to clog it up with sealers and corrosion right off the bat! Are there any radiator sealants that don't attach themselves to alum? Should I even worry about it?

I think I'm going to try and install a new plug with sealer on the one I knocked in the block. And try to run it. The engine is basically reasy to fire and a pain to install.

Thanks

Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 09-10-2010, 11:00 AM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
I don't know what the fascination is w/brass freeze plugs in the first place.

If you use antifreeze or some type of coolant additive other than straight water to prevent corrosion and rust and to lube the water pump seals, a steel set of plugs will easily outlast the engine.
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 09-10-2010, 11:05 AM
T-bucket23's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Engine basic condition - how to check Last photo:
Join Date: Aug 2005
Location: Massachusetts
Age: 56
Posts: 5,090
Wiki Edits: 26

Thanks: 7
Thanked 102 Times in 87 Posts
They might stop leaking on their own. I like other here always used a little gasket sealer. I would not pour anything into your new engine to try to get the leak stopped. Most likely it will stop on its own if not you will need to remove the plugs and try again. If you pour sealer into the engine you will most likely ruin your radiator and heater core.
__________________
Artificial Intelligence is no match for Natural Stupidity



Chet
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 09-10-2010, 11:38 AM
Registered User
 
Last photo:
Join Date: May 2009
Location: Wichita KS
Posts: 325
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
Quote:
Originally Posted by T-bucket23
They might stop leaking on their own. I like other here always used a little gasket sealer. I would not pour anything into your new engine to try to get the leak stopped. Most likely it will stop on its own if not you will need to remove the plugs and try again. If you pour sealer into the engine you will most likely ruin your radiator and heater core.

Well I don't have a heater core, but I'd sure like to not destroy the new radiator!

Thanks for the input.

I installed brass plugs because that is what came in the rebuild kit. Some of the larger plugs were steel.
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
Keep going through spark plugs, need some advice. eric32 Engine 109 04-19-2010 02:23 PM
Smokeys Freeze Plugs Revisited smokey626 Engine 9 01-28-2010 11:09 AM
Brass Freeze Plugs Factory Sbc? morejunk Engine 7 06-06-2008 08:02 AM
freeze out plugs jjpodlas Engine 7 09-27-2007 08:04 AM
freeze plugs regaldude Engine 5 09-07-2004 01:07 AM


All times are GMT -6. The time now is 12:27 PM.


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.