New 1967 GTO exhaust manifold casting - Pontiac GTO Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 07-19-2015, 06:23 PM Thread Starter
 
Join Date: Jan 2014
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
New 1967 GTO exhaust manifold casting

Hello,
I just received a new exhaust manifold for my 1967 Pontiac motor, 462 CI, and there is a gap in the casting (straight part between center d-ports (separator?)), right at the face where it attaches to the head. It is only about 1/8" wide, but it is deep (about 1/4" from the face of the manifold). I was told by the manufacturer that it should not be a problem, but I can't resolve the fact in my mind that it was put there for a purpose (keep cylinders separated) and there will be blow by between them right at the manifold connection to the head. This may be a problem, but I am not getting the feeling from the manufacturer that they are worried about it.
Anyone else have this issue, or better yet, is this a problem?
Thanks
67gtoconv is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old 07-19-2015, 10:36 PM
 
Join Date: Jan 2015
Location: Injun Territory, 'Merica!
Posts: 1,611
Mentioned: 0 Post(s)
Tagged: 1 Thread(s)
Quoted: 121 Post(s)
More info please on this ex manifold. what side? Am assuming its a standard log style manifold, not a repro RA exhaust manifold.
Pinion head is offline  
post #3 of 6 (permalink) Old 07-20-2015, 07:47 AM Thread Starter
 
Join Date: Jan 2014
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
It is a repo RA manifold, right side.
67gtoconv is offline  
 
post #4 of 6 (permalink) Old 07-20-2015, 08:01 PM
 
Join Date: Oct 2011
Posts: 23
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Would a picture be possible?

Pictures will help bring closure on this issue.
1966 GTO KID is offline  
post #5 of 6 (permalink) Old 07-21-2015, 11:19 AM
 
Join Date: Jan 2015
Location: Injun Territory, 'Merica!
Posts: 1,611
Mentioned: 0 Post(s)
Tagged: 1 Thread(s)
Quoted: 121 Post(s)
Agree, love to see a pic. Sounds odd, but do agree should not going to hurt performance. Are these '67 repro manifolds the Classic brand (from Ames, OPGI, old PY, Y1, Parts Place) or are they from Ram Air Restorations?
Pinion head is offline  
post #6 of 6 (permalink) Old 07-21-2015, 12:31 PM
64-67 Expert
 
geeteeohguy's Avatar
 
Join Date: Feb 2008
Location: Fresno, California
Posts: 8,480
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 100 Post(s)
Please post a pic. At the price of these manifolds, do you really want to settle for a defective one? I know I wouldn't....those days are over for me.
geeteeohguy is online now  
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, LeMans & GTO Engine Tuning and High Performance

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











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
1967 carb/HO exhaust manifold question my67goat 1964-1974 Tempest, LeMans & GTO Engine Tuning and High Performance 10 03-20-2013 09:16 AM
69 GTO intake manifold casting and date code# Jwross 1964-1974 Tempest, Lemans & GTO General Discussion 0 02-03-2013 06:20 PM
1974 GTO exhaust manifold raregto 1964-1974 Tempest, LeMans & GTO Projects, Barn Finds & Restoration Discussions 2 06-23-2012 06:38 PM
67 gto ho exhaust manifold date coded ? fiesta62 1964-1974 Tempest, LeMans & GTO Engine Tuning and High Performance 1 10-28-2011 05:19 PM

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