71 lemans header bolt problem. - Pontiac GTO Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 02-25-2013, 03:40 PM Thread Starter
 
SPCMarty's Avatar
 
Join Date: Jul 2011
Location: Duluth MN
Posts: 188
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
71 lemans header bolt problem.

It's practically ridiculous that I'm asking for help on a measly bolt. I have 4 tube headers on my 400 and I cannot for the life of me figure out an angle to tighten the second bolt from the rear of the engine on the passenger side. The tube blocking my attempts; belong to the #6 cylinder.


Sent from AutoGuide.com App

1971 LeMans 350ci 2Barrel Carb

B. Co 1-22 4ID OIF 2008-09
SPCMarty is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 02-25-2013, 04:26 PM
 
rickm's Avatar
 
Join Date: Feb 2012
Location: new york state
Posts: 632
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
its not ridiculous, some header designs and hardeware are ridiculous. dont know what type of header bolt your dealing with. i have an array of small combonation wrenches with thin walls and even some i grinded down specifically for headers. ive seen some guys use an allen type header bolt for the difficult ones. can you get it from underneath with a 1/4" ratchet , extention, universal? you should always start your sequence from center port out.
rickm is offline  
post #3 of 9 (permalink) Old 03-12-2013, 04:52 PM Thread Starter
 
SPCMarty's Avatar
 
Join Date: Jul 2011
Location: Duluth MN
Posts: 188
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
71 lemans header bolt problem.

It's just a typical 9/16 bolt. I tried posting pics but it didn't seem to work.


Sent from AutoGuide.com App

1971 LeMans 350ci 2Barrel Carb

B. Co 1-22 4ID OIF 2008-09
SPCMarty is offline  
post #4 of 9 (permalink) Old 03-12-2013, 05:33 PM
 
joesweeting's Avatar
 
Join Date: May 2011
Location: Virginia Beach
Posts: 256
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Re: 71 lemans header bolt problem.

I had hooker headers, I had to use two combination wrenches and a rubber band. Used the open end on the bolt and connected the box end of that wrench to the open end of the other. Used the rubber band to keep the open end from sliding off the box end. It was a pain, I now have oversized Ram Air exhaust.

Sent from AutoGuide.com Free App
joesweeting is offline  
post #5 of 9 (permalink) Old 03-12-2013, 05:59 PM
Former Moderator
 
ALKYGTO's Avatar
 
Join Date: Mar 2010
Location: Wentzville, Mo.
Posts: 2,846
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Garage
So your not using "header" bolts with the small heads? If your not it's a wonder you only have a problem with one of them. Also I would'nt run "soft" hardware store bolts on the exhaust headers. Do the right thing and buy some ARP or Mr. Gasket header bolts.



You can thank me later.



Gone....but not forgotten....
ALKYGTO is online now  
post #6 of 9 (permalink) Old 03-12-2013, 06:21 PM Thread Starter
 
SPCMarty's Avatar
 
Join Date: Jul 2011
Location: Duluth MN
Posts: 188
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
71 lemans header bolt problem.

No I'm not, grade 8 bolt from menards. Used those for every bolt, just this one giving me trouble.


Sent from AutoGuide.com App

1971 LeMans 350ci 2Barrel Carb

B. Co 1-22 4ID OIF 2008-09
SPCMarty is offline  
post #7 of 9 (permalink) Old 04-11-2013, 02:41 AM
 
Join Date: Mar 2013
Location: Blue Ridge Mountains
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Header Bolt Problem

I had the same problem with a set of Hooker super comp headers in my 71 Lemans but it was on the drivers side. I had to grind down the open end of my wrench and order a set of header bolts because they give you more room to work. They also make some with an allen head in the center that are supposed to work very well and you don't have to tighten them again after you drive the car for a couple of hundred miles to allow for heat and cooling cycles. I ended up getting the best access from underneath standing under the tranny facing the front of the car if that helps any. Good luck to you.
Pontibeast is offline  
post #8 of 9 (permalink) Old 04-11-2013, 07:42 AM
Super Moderator
 
Rukee's Avatar
 
Join Date: Feb 2007
Location: South Central Wisconsin
Posts: 9,891
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 15 Post(s)
with Alky, go to an auto parts store and grab some header bolts. They have a small head, fit better and won't stretch like the reg bolts.
Rukee is offline  
post #9 of 9 (permalink) Old 04-17-2013, 12:28 PM
 
69Goatee's Avatar
 
Join Date: Aug 2009
Location: Wichita, KS
Posts: 221
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I bought a set of Stage 8 locking header bolts made for BBC (longer shaft than Pontiac). On the same bolt you are having trouble with I got a couple of parts store 7/16 head header bolts, ground the top corners of the hex round for more clearance and drilled two 1/8" holes across two of the flats. Then I used an 1/8" allen wrench or drill bit to tighten the bolt. After they were tight I put a cotter pin in one of the holes and bent it so it just touched the header pipe and will not come lose.

1969 GTO
NUMBERS MATCHING
PAWN SHOP FIND
1947 MGTC
GRANDFATHER STARTED
RESTORATION IN 1980...


"You can have it all, my emipre of dirt. I will let you down, I will make you hurt"
NIN
69Goatee is offline  
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, LeMans & GTO Technical and Electrical Wiring
Gear in this thread - Powered by O'Reilly Auto Parts

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pontiac GTO Forum forums, you must first register.
Please enter your desired user 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:
OR

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
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
horrible problem!!!!!!Oil pan bolt missing!!! TeHKasperek Service, Maintenance and Technical Discussion 9 06-07-2011 06:49 PM
70 Lemans-need header education russosborne 1964-1974 Tempest, Lemans & GTO General Discussion 5 02-24-2011 11:18 AM
Header Bolt Torque KyleGT05usmc Intake and Exhaust Discussions 3 01-16-2010 10:00 PM
72 LeMans 10 Bolt rear end questions HelpDeskGuy 1964-1974 Tempest, Lemans & GTO Undercarriage, Frame, Transmission and Differential Discussions. 5 04-07-2009 08:00 PM
Header problem dizzy1 Intake and Exhaust Discussions 5 06-03-2007 11:38 AM

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

 
For the best viewing experience please update your browser to Google Chrome