Discovery II Talk about the Land Rover Discovery II within.
Sponsored by:
Sponsored by:

Head Bolt Torque Specs

Thread Tools
 
Search this Thread
 
  #1  
Old 07-05-2013, 12:05 AM
FlyingZebra34's Avatar
Recovery Vehicle
Thread Starter
Join Date: Feb 2012
Location: Aberdeen, Washington
Posts: 1,039
Received 42 Likes on 34 Posts
Default Head Bolt Torque Specs

I have read 2 options and I was wondering what all of you have decided upon..

The rave saves 15ftlb, 90, then 90, I don't have an angle wrench and fear the marking the bolts then turning them will yield uneven results.

I have a decent torque wrench that I trust and read that people do 15, then 50 - 58 on the long bolts and 68 - 72 on the short bolts

And a thank you in advance for everyone helping me with my first head gasket job.
 

Last edited by FlyingZebra34; 07-05-2013 at 12:37 AM.
  #2  
Old 07-05-2013, 12:56 AM
Savannah Buzz's Avatar
Super Moderator
Join Date: Jan 2011
Location: Savannah Georgia
Posts: 16,322
Likes: 0
Received 82 Likes on 79 Posts
Default

Take a scratch awl, or sharp object, and scratch a line across bolt head. Then you can see if you have indeed made the required 90 degree progression. Can also paint lines or put tape on the socket. Hard to tell with breaker bar at an angle, hood still on vehicle, etc.

At this point I must mention that my HG job is not going well, as the valley pan alignment is not good. It has been reported that fitting the valley pan gasket and using it to help align heads and valley pan gasket pan before torque of the heads is a good idea.
 
  #3  
Old 07-05-2013, 01:25 AM
FlyingZebra34's Avatar
Recovery Vehicle
Thread Starter
Join Date: Feb 2012
Location: Aberdeen, Washington
Posts: 1,039
Received 42 Likes on 34 Posts
Default

Ill try to mark it to make the 90 degree turn. I wish there was some torque figures to use. That would be so much easier!

And sorry to hear that man, seeing as how I'm only at 15ftlb I'll fit the valley gasket to ensure it's lined up seeing as how the victor reinz gaskets are a bit thicker.
 
  #4  
Old 07-05-2013, 01:28 AM
Savannah Buzz's Avatar
Super Moderator
Join Date: Jan 2011
Location: Savannah Georgia
Posts: 16,322
Likes: 0
Received 82 Likes on 79 Posts
Default

I would think some masking tape around the socket and you can mark away. Also, my digital 1/2 inch torque wrench is useless on the smaller things, lowest point is 29.5 pounds.
 
  #5  
Old 07-05-2013, 07:21 AM
antichrist's Avatar
Baja
Join Date: Sep 2007
Location: Georgia, USA
Posts: 5,232
Received 51 Likes on 44 Posts
Default

Originally Posted by FlyingZebra34
Ill try to mark it to make the 90 degree turn. I wish there was some torque figures to use. That would be so much easier!
Easier, but wrong. These are basically TTY bolts and to get even clamping the torque angle method must be used.
In the scheme of things, a torque angle gauge isn't very much money added to a head job.
Lisle 28100 Lisle 28100
$28 with free shipping.

 
  #6  
Old 07-05-2013, 07:26 AM
jafir's Avatar
Super Moderator
Join Date: Nov 2009
Location: Arkansas
Posts: 5,847
Received 95 Likes on 90 Posts
Default

Originally Posted by antichrist
What is the big alligator clip for? Just to ground the thing?
 
  #7  
Old 07-05-2013, 08:06 AM
turbodave's Avatar
Mudding
Join Date: Sep 2011
Posts: 141
Likes: 0
Received 3 Likes on 3 Posts
Default

Originally Posted by jafir
What is the big alligator clip for? Just to ground the thing?
Yes. And I can totally reccomend the Lisle angle gauge. I have tried several different ones (all basically the same design principle) and all are flawed in that when you put sideways load on them (un-avoidable when using a breaker bar as apposed to an impact gun) they can drag the needle, which results in you putting more angle than intended on there.

The Lisle is USA made as well - and all steel - and robust as robust can be. The aligator looks wierd, but is actually a lot more useful, steady, and robust than the bent piece of rod that comes with other angle meters too...
 
  #8  
Old 07-05-2013, 09:16 AM
Disco Mike's Avatar
Administrator
Join Date: Apr 2006
Location: Denver, Colorado
Posts: 25,707
Likes: 0
Received 99 Likes on 81 Posts
Default

Whatever way you install your head bolts always use head bolt thread lub over engine oil, mineral oil or dry for the best consistant settings for all the bolts.
 
  #9  
Old 07-05-2013, 09:41 AM
pinkytoe69's Avatar
Recovery Vehicle
Join Date: Jan 2012
Location: mini soda
Posts: 1,126
Likes: 0
Received 11 Likes on 10 Posts
Default

Originally Posted by Disco Mike
Whatever way you install your head bolts always use head bolt thread lub over engine oil, mineral oil or dry for the best consistant settings for all the bolts.
I dont know what type of thread lube you suggest, but you can get a tube of the ARP ultra from O'Reilly for about $8
 
  #10  
Old 07-05-2013, 10:32 AM
FlyingZebra34's Avatar
Recovery Vehicle
Thread Starter
Join Date: Feb 2012
Location: Aberdeen, Washington
Posts: 1,039
Received 42 Likes on 34 Posts
Default

Well, the bolts were already lubricated with new oil and torqued to 15ftlbs. I started to do the first 90 degrees on the drivers side and I'm almost certain I messed up.
 


Quick Reply: Head Bolt Torque Specs



All times are GMT -5. The time now is 09:19 PM.