Head Bolts ?? Reuse ? - 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 09-15-2008, 12:28 PM
Registered User
 
Join Date: Aug 2008
Location: CALIFORNIA
Posts: 18
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Head Bolts ?? Reuse ?

Can you reuse headbolts that were already torqued on the heads or do you have to buy new ones ?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 09-15-2008, 12:36 PM
Registered User
 
Join Date: Aug 2007
Location: Sterling Heights, Michigan
Posts: 242
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
It depends on the engine. If the bolts are torque to yeild, then no the bolts are over stressed at this point. On older engines SBF & SBC the bolts can be reused if in good condition. Depending on the engine build you may want to consider using ARP studs. With high hp don't take any chances on using old bolts. With a standard rebuild reusing head bolts should not be a problem. I must say that many builders will not take any chances and always use new bolts. Tom F.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 09-15-2008, 12:37 PM
Registered User
 
Join Date: Nov 2007
Location: utah
Posts: 416
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
It depends. I believe that it was sometime in the late 80's (??) that most headbolts went to a "torque to yield" design which actually allows the bolt to stretch at a specific amount of torque. These need to be discarded and replaced after each use, bolts made before the switch can be and have been used over and over as they are hardened, made for the job and have no such soft spot. But I believe that youl find that the common practice nowadays is to replace them, especially for a performance application.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 09-15-2008, 12:52 PM
Registered User
 
Join Date: Aug 2008
Location: CALIFORNIA
Posts: 18
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks i think im going to go with the ARP Studs they work the same way right same torque sequence
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 09-15-2008, 01:22 PM
richard stewart 3rd's Avatar
Registered User
 

Last journal entry: 351W rebuild
Last photo:
Join Date: Jan 2006
Location: tremont, pa.
Age: 69
Posts: 2,217
Wiki Edits: 0

Thanks: 13
Thanked 15 Times in 14 Posts
Hi,

Use permatex non hardning #2 on the block side of the studs.
Rich

http://www.alamomotorsports.com/arp/arp_headbolts.html
http://www.dieselwarden.net/ford/project18.html
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 09-15-2008, 02:50 PM
327NUT's Avatar
Registered User
 
Last photo:
Join Date: Dec 2004
Location: So. Utah
Age: 67
Posts: 3,198
Wiki Edits: 0

Thanks: 0
Thanked 63 Times in 57 Posts
My own opinion.....but I wouldnt use studs unless I was building a very hipo blown or nitrous engine, just not needed. Plus they cost more than regular bolts and if you're engine sits in any normal vehicle engine bay you'll play hell getting the heads off over the studs (if you ever have to). A good set of ARP bolts will work just fine....in most applications.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 09-15-2008, 03:54 PM
Registered User
 
Last photo:
Join Date: Jun 2007
Location: TN.
Posts: 287
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
if you use the #2 non harding as mentioned above the studs will come out with no problem, so if you need to pull the heads, just pull the studs first.

sam-missle
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 09-15-2008, 04:21 PM
Registered User
 
Last photo:
Join Date: Apr 2007
Location: Seattle, Wa
Posts: 6,686
Wiki Edits: 0

Thanks: 3
Thanked 403 Times in 348 Posts
Quote:
Originally Posted by flare1967
Thanks i think im going to go with the ARP Studs they work the same way right same torque sequence
The problem you often get into with studs used on engines in stock bodied cars is that very often you can't get the heads off with the engine installed as there is not sufficient space to raise the head to clear the studs.

ARP bolts work very well and get around this problem.

Bogie
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 09-15-2008, 08:35 PM
Jmark's Avatar
Hotrodders.com Moderator
 
Last photo:
Join Date: Sep 2003
Location: phoenix
Age: 61
Posts: 4,786
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
Quote:
Originally Posted by 327NUT
My own opinion.....but I wouldnt use studs unless I was building a very hipo blown or nitrous engine, just not needed. Plus they cost more than regular bolts and if you're engine sits in any normal vehicle engine bay you'll play hell getting the heads off over the studs (if you ever have to). A good set of ARP bolts will work just fine....in most applications.
Yep, very good advice!
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 09-15-2008, 08:46 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
Quote:
Originally Posted by oldbogie
The problem you often get into with studs used on engines in stock bodied cars is that very often you can't get the heads off with the engine installed as there is not sufficient space to raise the head to clear the studs.

ARP bolts work very well and get around this problem.

Bogie
The last set of ARP studs I bought had a small hex in them to allow them to be screwed in and out with an allen wrench. That would allow you to remove the studs if pulling the heads in the vehicle was needed, although it would still be a pain in the butt.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 09-15-2008, 08:49 PM
DoubleVision's Avatar
Not Considered a Senior Member
 
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 40
Posts: 10,654
Wiki Edits: 0

Thanks: 15
Thanked 58 Times in 55 Posts
If you decide to go the stud route, or even new bolt route, make sure you retorque them, if not it`s asking for a blown head gasket. Since the bolt or stud is not "seasoned" in, it`s always a good idea and safe practice to go back and retorque. I`d rather go through the pain in the *** procedure to retorque rather than remove the head.
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 09-15-2008, 09:25 PM
327NUT's Avatar
Registered User
 
Last photo:
Join Date: Dec 2004
Location: So. Utah
Age: 67
Posts: 3,198
Wiki Edits: 0

Thanks: 0
Thanked 63 Times in 57 Posts
Well I reckon Oldbogie didn't read #6.....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:
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
Stretch Head Bolts For Small Chevy? NAIRB Engine 2 05-26-2006 08:23 PM
ARP head bolts oldred Engine 4 04-01-2005 10:32 AM
5.0 head bolts oldred Engine 4 12-18-2004 09:09 PM
oil on head bolts and head gasket bullheimer Engine 7 05-25-2004 04:50 PM
SBC head bolts fred56 Engine 2 03-27-2003 10:44 AM


All times are GMT -6. The time now is 05:27 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.