Cracked water jacket - 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 07-28-2005, 09:28 PM
ap0001's Avatar
Member
 
Join Date: Jan 2003
Location: Marine Corps Base Hawaii
Age: 34
Posts: 78
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Cracked water jacket

72 Chevelle...350.....The ice in my engine expanded and cracked the water jacket inside the valley. The crack is an L shaped crack on both sides of the valley right above the no. 1 & 3, on one side, and the 2 & 4 spark plug on the other. I heard from a neighbor that I could drill a hole at each end of the crack to stop it from running, grind along the crack a little to make it easier to fill, and then fill it all in with JB weld for a quick fix that would let me buy some time to get a new block since this is mine and my wife's second car for work. He swears by it. I thought i'd get a second opinion before I waisted my time. What do you guys out there think???
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 07-28-2005, 09:56 PM
Blazin72's Avatar
You got a leaky spark tube...
 
Last wiki edit: Rearend removal
Last journal entry: General Lee
Last photo:
Join Date: Jul 2005
Location: Union, WA
Age: 32
Posts: 2,868
Wiki Edits: 19

Thanks: 0
Thanked 2 Times in 2 Posts
I used JB Weld once. Just about lost a brand new engine because of it too. At the time I put the engine together I didnt have a welder and somebody said to just use JB weld to attach the oil pump pickup to the oil pump. About two months later I noticed that my oil pressure was almost non-existent. I pulled the oil pan and found the pickup just about ready to fall out of the pump. The JB Weld was a bad idea.

In your case I think it's just time for a new block. Water will probably still manage to find its way past the JB Weld.

Besides...if you're gonna be grinding in the lifter valley you're gonna have to pull the engine apart anyway. Unless you want metal debris in your engine.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 07-28-2005, 10:03 PM
1931 steve's Avatar
Hotrodders.com Moderator
 
Last wiki edit: How to rebuild an engine Last photo:
Join Date: Nov 2004
Location: Michigan
Age: 42
Posts: 1,207
Wiki Edits: 4

Thanks: 0
Thanked 0 Times in 0 Posts
I agree with Blazin72 JB Weld is good for certain things but in this case I suggest a new engine block. Its like putting perfume on a pig in the end its still a pig. So patch it up if you like but in the end there is still a crack.

Steve
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 07-28-2005, 10:37 PM
ap0001's Avatar
Member
 
Join Date: Jan 2003
Location: Marine Corps Base Hawaii
Age: 34
Posts: 78
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
What about if I have it welded?????
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 07-29-2005, 06:45 AM
TurboS10's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Auto Terms and Definitions Used in Modern Engine T... Last photo:
Join Date: Sep 2002
Location: Texas
Age: 36
Posts: 3,463
Wiki Edits: 2

Thanks: 0
Thanked 0 Times in 0 Posts
Welding would be the only option. I still would not do it. It will likely keep cracking. How do you know there are not cracks you can not see??
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 07-29-2005, 07:11 AM
Member
 
Join Date: Jul 2005
Location: south east
Posts: 46
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
LOCKNSTITCH system works great for this assuming the engine isnt used for performance.http://www.locknstitch.com/Metal_Stitching.htm

Last edited by bamfasm; 07-29-2005 at 07:21 AM.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 07-29-2005, 07:25 AM
johnsongrass1's Avatar
Race it, Don't rice it!
 
Last photo:
Join Date: Jul 2002
Location: Columbia, Mo
Age: 37
Posts: 4,062
Wiki Edits: 0

Thanks: 0
Thanked 8 Times in 8 Posts
I've got a cerami-sealed modified engine in my car right now.

I've fixed many blocks(exterior cracks) with epoxy.

Welding will work for a while.

Stitching works too.

Best way not to spend much money IMO. grind out the crack and flash the oil out with a torch. Clean with mineral spirit's or the like and JB weld er up. Wait a few day's a nd use a bottle of glass sealer. If the crack isn't to bad it'll work probably through the winter. But in the end, you still got a crack.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 07-29-2005, 03:12 PM
Blazin72's Avatar
You got a leaky spark tube...
 
Last wiki edit: Rearend removal
Last journal entry: General Lee
Last photo:
Join Date: Jul 2005
Location: Union, WA
Age: 32
Posts: 2,868
Wiki Edits: 19

Thanks: 0
Thanked 2 Times in 2 Posts
If you do any kind of repairs to that block the engine really should be disassembled to keep debris from making its way into the rest of the engine. If you disassemble the engine then you might as well replace the block. I can see doing something like that to an engine that is a little harder to come by like an old flathead or something of that nature, but on a 350? They're all over the place. It may cost a little bit for machine work and stuff but save yourself the time of having to pull an engine apart twice. Theres no guarantee on how long the repair is going to last either.
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
Putting water in the intake??? 79transam Engine 50 01-10-2006 12:23 PM
Well water (iron in water) Automotive paint 1931 steve Body - Exterior 11 07-14-2005 09:29 AM
Water in Oil Update... TurboS10 Engine 8 06-27-2005 06:55 PM
oil in water, water in oil??? andrewpruitt Engine 18 03-19-2005 05:57 PM
Water Jacket Daved Engine 4 07-23-2003 08:32 PM


All times are GMT -6. The time now is 03:52 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.