Welding a BBC cyl. head - 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 01-09-2013, 11:55 AM
Registered User
 
Last photo:
Join Date: May 2009
Location: saskatoon,saskatchewan,canada
Posts: 14
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Welding a BBC cyl. head

I have a set of rec. port BBC heads and one dropped a valve. The chamber is beat and has a hole that needs welding. I can get this done by a friend for free but wanted to know if there's anything special I should do? Like strip the whole casting and warmit up in the bbq? I've done that 25 yrs. ago with cast air seeder shovels and it worked good. I'll get it magged first to make sure its worth it or not. And before you ask I'm just saving it cause they are a ported set of 990's. I'll try to get some pics later.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 01-09-2013, 12:13 PM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 59
Posts: 11,607
Wiki Edits: 0

Thanks: 690
Thanked 1,323 Times in 1,229 Posts
There are professional shops that weld heads. The person doing the welding is either qualified or not.If the heads are worth saving then save them,good luck.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-09-2013, 01:52 PM
Registered User
 
Last photo:
Join Date: May 2009
Location: saskatoon,saskatchewan,canada
Posts: 14
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I'm not worried about the the guy doing it. But at his shop they don't do alot of heads. It's more farm and oilfield stuff but they said its no problem to weld cast. Just thought I'd ask if there's anything else to pass along.
Reply With Quote Quick reply to this message
 
  #4 (permalink)  
Old 01-09-2013, 05:46 PM
BOBCRMAN@aol.com's Avatar
Member
 
Last photo:
Join Date: May 2002
Location: Holly, michigan
Posts: 8,970
Wiki Edits: 0

Thanks: 85
Thanked 520 Times in 458 Posts
Yes, post some pics.

I heat heads and blocks in my industrial oven that I bake blocks to clean in. Just turn the heat up. Get the part to correct temp. Then weld right in the oven. Re-heat and slowly cool and shot peen. Used to do lots of Buicks this way.

I have also drilled a round hole in the quench area where the head of a valve broke it. Filled the spot with a cast iron pipe plug. Welded it up and milled it flat. Still out there running.

I have a set of 990's on one of my vehicles that were free. They were on a boat motor that wasn't correctly winterized.

Cracked along the valve cover rail on both sides. Heated in oven, welded hot with soft MIG wire. Then pressure checked/milled flat. They work great now.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 01-09-2013, 09:43 PM
Registered User
 
Last photo:
Join Date: May 2009
Location: saskatoon,saskatchewan,canada
Posts: 14
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
pics

It's more on the quench side. And I do like the plug idea.
Attached Thumbnails
Click image for larger version

Name:	020.JPG
Views:	203
Size:	1.78 MB
ID:	70436   Click image for larger version

Name:	024.JPG
Views:	170
Size:	1.77 MB
ID:	70437  
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 01-14-2013, 08:19 PM
Registered User
 
Join Date: Jun 2012
Posts: 50
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
If the broken valve did that to the head could we see a picture of the piston ? I never in a million years thought that bbc cast iron head could be damaged like that reminds me of my grandpa's old saying about breaking a cast iron piss pot
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 01-14-2013, 09:28 PM
Registered User
 
Last photo:
Join Date: May 2009
Location: saskatoon,saskatchewan,canada
Posts: 14
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I don't have the motor they came off of. And I did find another one that also comes with one head beat from a dropped valve.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 01-14-2013, 09:49 PM
Registered User
 
Join Date: Jun 2012
Posts: 50
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
thats crazy to see the force break and push the cast in like that , I have a new appreciation for connecting rods lol
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:
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:
Insurance
Please select your insurance company (Optional)

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
cyl head help, motors almost done blight Engine 6 05-29-2010 02:27 AM
BBC Peanut Port manifold and 049 Cyl Head? Ted B Engine 1 12-09-2008 01:09 AM
Welding Aluminum Cyl Heads Ed Farrell Engine 1 10-11-2007 01:20 PM
AFR cyl head question. 67 Deuce 4 Me Engine 29 07-29-2005 07:14 PM
4 valve BBC cyl heads...? Bumpstick Engine 3 01-29-2005 08:51 AM


All times are GMT -6. The time now is 08:07 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.