News: Putting FUN and FRIENDLINESS, FIRST into owning and learning about AMC small bodied cars, primarily Eagles, Spirits and Concords as well as vehicles built in AMC's Mexican subsidiary, VAM.

The AMC Eaglepedia can now be accessed using the buttons found below  This is a comprehensive ever growing archive of information, tips, diagrams, manuals, etc. for the AMC Eagle and other small bodied AMC cars. 

Also a button is now available for our Face Book Group page.

Welcome to the AMC Eagles Nest.  A new site under "old" management -- so welcome to your new home for everything related to AMC Eagles, Spirits and Concords along with opportunities to interact with other AMC'ers.  This site will soon be evolving to look different than it has and we will be incorporating new features we hope you will find useful, entertaining and expand your AMC horizons.

You can now promote your topics at your favorite social media site by clicking on the appropriate icon (top upper right of the page) while viewing the topic you wish to promote.


  • November 23, 2024, 09:12:00 PM

Login with username, password and session length

« previous next »
Pages: [1]   Go Down

Author Topic: Head bolt specs?  (Read 6677 times)

0 Members and 1 Guest are viewing this topic.

Offline shanebo

  • Without "me" its just "aweso"
  • AMC Eagles Den Addicted
  • ********
  • Posts: 2335
  • Thumbs Up 71
  • 80's chicks are the hottest!
Head bolt specs?
« on: February 22, 2011, 11:50:12 PM »
Does anyone know in what order you tighten the head bolts...as well as the torque specs..Its a 1983 258 by the way.

Thanx
shane
Logged
AMC, serving up heaping helpings of AWESOME since 1954

Offline tougeagle

  • Horses, rodeos, diesel trucks and AMC Eagles
  • AMC Eagles Den Addicted
  • ********
  • Posts: 1726
  • Thumbs Up 75
  • There are many like it, but this one is mine
Re: Head bolt specs?
« Reply #1 on: February 23, 2011, 02:06:39 AM »
Quote from: shanebo on February 22, 2011, 11:50:12 PM
Does anyone know in what order you tighten the head bolts...as well as the torque specs..Its a 1983 258 by the way.

Thanx
shane


13 - 14
9 - 10
5 - 6
1- 2
4 - 3
8 - 7
12 - 11

all to 45 ft lbs, then all to 65, then all but #11 to 85. #11 is 80, coat with RTV (but not directly under cap, rather, on bolt itself)

think of it as a spiral, starting at #1.

You MUST buy new head bolts. MUST. They are 7/16" and WILL stretch. Seen it happen twice, each time within just a few thousand miles... on mine, and someone else's. www.headbolts.com will have the ones you need. The price is steep, but they're just about the only option. Make sure any brackets for pulleys you have don't bolt to the head bolts. If they do, you may have to talk to someone that knows where to go for custom size bolts with studs on top.
Logged
Upcoming 1982 Wagon "The Silver Bullet"
Goals: 550hp/600tq 4.5L EFI Turbo Stroker, Tremec 6 speed manual
2007 Ram 2500 6.7 Cummins 6 speed 600+hp/1400+tq fully deleted
1998 Honda Civic "the hoopdy"

What's your 'sona?

A dream car does not have to be beautiful in the eyes of others, it's not theirs.

Offline shanebo

  • Without "me" its just "aweso"
  • AMC Eagles Den Addicted
  • ********
  • Posts: 2335
  • Thumbs Up 71
  • 80's chicks are the hottest!
Re: Head bolt specs?
« Reply #2 on: February 24, 2011, 12:36:58 AM »
Thanx!!Thats exactly the info I needed.
Logged
AMC, serving up heaping helpings of AWESOME since 1954

Offline tougeagle

  • Horses, rodeos, diesel trucks and AMC Eagles
  • AMC Eagles Den Addicted
  • ********
  • Posts: 1726
  • Thumbs Up 75
  • There are many like it, but this one is mine
Re: Head bolt specs?
« Reply #3 on: February 24, 2011, 03:48:18 PM »
Quote from: shanebo on February 24, 2011, 12:36:58 AM
Thanx!!Thats exactly the info I needed.

No worries... Again, make sure that idler tensioner doesn't bolt to the two front head bolts, on the manifold side, or you may have a problem...
Logged
Upcoming 1982 Wagon "The Silver Bullet"
Goals: 550hp/600tq 4.5L EFI Turbo Stroker, Tremec 6 speed manual
2007 Ram 2500 6.7 Cummins 6 speed 600+hp/1400+tq fully deleted
1998 Honda Civic "the hoopdy"

What's your 'sona?

A dream car does not have to be beautiful in the eyes of others, it's not theirs.

Offline mudkicker715

  • Administrator
  • AMC Eagles Den Addicted
  • ******
  • Posts: 3037
  • Thumbs Up 167
Re: Head bolt specs?
« Reply #4 on: February 24, 2011, 04:03:36 PM »
Quote from: tougeagle on February 24, 2011, 03:48:18 PM
Quote from: shanebo on February 24, 2011, 12:36:58 AM
Thanx!!Thats exactly the info I needed.

No worries... Again, make sure that idler tensioner doesn't bolt to the two front head bolts, on the manifold side, or you may have a problem...

Certain headbolts such as amcs are reuseable. If that idler is not bolted to the topside of the headbolts than where else.

My stroker 6 has reused headbolts. Various other rebuilds of mine have also reused headbolts. The only ones you cannot reuse is the torque to yield (I think that's what their called).
Logged



Manitowoc WI

Offline shanebo

  • Without "me" its just "aweso"
  • AMC Eagles Den Addicted
  • ********
  • Posts: 2335
  • Thumbs Up 71
  • 80's chicks are the hottest!
Re: Head bolt specs?
« Reply #5 on: February 24, 2011, 11:25:45 PM »
It looks like the bracket is in that spot....Are those bolts available or am I gonna have to do some rearranging?
Logged
AMC, serving up heaping helpings of AWESOME since 1954

Offline tougeagle

  • Horses, rodeos, diesel trucks and AMC Eagles
  • AMC Eagles Den Addicted
  • ********
  • Posts: 1726
  • Thumbs Up 75
  • There are many like it, but this one is mine
Re: Head bolt specs?
« Reply #6 on: February 24, 2011, 11:43:13 PM »
You may have to reuse just those two bolts.... They are good for ONE reuse...
Logged
Upcoming 1982 Wagon "The Silver Bullet"
Goals: 550hp/600tq 4.5L EFI Turbo Stroker, Tremec 6 speed manual
2007 Ram 2500 6.7 Cummins 6 speed 600+hp/1400+tq fully deleted
1998 Honda Civic "the hoopdy"

What's your 'sona?

A dream car does not have to be beautiful in the eyes of others, it's not theirs.

Offline shanebo

  • Without "me" its just "aweso"
  • AMC Eagles Den Addicted
  • ********
  • Posts: 2335
  • Thumbs Up 71
  • 80's chicks are the hottest!
Re: Head bolt specs?
« Reply #7 on: February 25, 2011, 12:39:59 AM »
The car really shows no major sign of needing a headgasket. The rear main needs replacing as does all the other gaskets. I really wanted to change it while im that far into the motor, mostly cause knowing my luck ill have to change it in a year and tear down the whole top end......again.
Hipathetically speaking though, if I were to pull the head and those 2 bolts are shot what would be my options at that point? would i be screwed? ??? or is there a differnt belt configuration i could resort to..a non-ac configuration possibly...Im really not to attached to the AC anyway...If its that hot outside Ill be on the Motorcycle anyway ;D.
What do ya think?
Logged
AMC, serving up heaping helpings of AWESOME since 1954

Offline mudkicker715

  • Administrator
  • AMC Eagles Den Addicted
  • ******
  • Posts: 3037
  • Thumbs Up 167
Re: Head bolt specs?
« Reply #8 on: February 25, 2011, 09:20:49 AM »
As I said reuse the bolts all you want. If properly tightened to spec no problems what soever reusing head bolts .
Logged



Manitowoc WI

Offline shanebo

  • Without "me" its just "aweso"
  • AMC Eagles Den Addicted
  • ********
  • Posts: 2335
  • Thumbs Up 71
  • 80's chicks are the hottest!
Re: Head bolt specs?
« Reply #9 on: February 26, 2011, 12:40:53 AM »
cool....I looked at them today the ends dont look like they have ever been removed so I think Im in the clear...doesnt look like anyone has messed with it....Id best knock on some wood though...lol....thanks for all the imput fellas. ;D
Logged
AMC, serving up heaping helpings of AWESOME since 1954
Pages: [1]   Go Up
« previous next »
 

SMF spam blocked by CleanTalk