RA reproduction Manifold Gasket change - Pontiac GTO Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 05-26-2019, 12:16 PM Thread Starter
 
Instg8ter's Avatar
 
Join Date: Sep 2010
Location: Near Detroit
Posts: 3,915
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 20 Post(s)
RA reproduction Manifold Gasket change

Been putting off doing this. when i got the motor back from dyno they had scorched my new RA 2.5" gaskets to the mesh, so in the interim i used a set of reusable Dougs layered aluminum gaskets to get her running. It has had passenger side leaks since. The motor builder gave me a new set and i took to putting them on yesterday. Passenger side was a breeze, no need to loosen any of the tailpipes left two end bolts in a fer threads to catch the ears on the gaskets. They seperated just enough to slide the dougs out and the new ones in. The drivers side was a little trickier with the back bottom bolt that holes the shield tube for the starter wires. All in all it was a afternoons work, hardest part was getting the middle bolts threaded in the alum straight.

fired her up, perfect amount of rumble yet quiet enough to be able to talk without raising your voice....love the near stock sound and seems to be a slight increase in power with the better flow. After going the header route with two different sets and seeing how many places they were making contact when the engine torque rocked in the mount (6) i knew where my false knocking came from. I will never put headers on a Pontiac again. if there is a slight power loss i will take it rather than my motor banging the frame every time i get on it and the multi day knuckle busting job it is to wedge pipes in our cars.

Instg8ter is offline  
Sponsored Links
Advertisement
 
post #2 of 2 (permalink) Old 05-27-2019, 10:42 AM Thread Starter
 
Instg8ter's Avatar
 
Join Date: Sep 2010
Location: Near Detroit
Posts: 3,915
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 20 Post(s)
rain stopped today and was able to run it up and down the street this morning before the ride out to see the grandkids. WOW....i didnt realize how much power the leaks were scrubbing from the flow. hit it from a 15 roll and squatted and layed 50' of rubber without even straining and chirped second without the slapstick. Idles with a slight lope at 800rpm, checked all plugs and they were all medium grey to charcoal no deposits. the more i drive the duals on the street the more i love them. 16-20 MPG with the 2:56 if i keep it around 2000 at 75. I can really feel the flat torque curve from the dyno pulls 460-508 from 2400-5200 redline. Scary to think what it would do with 3:55 and the mickey thompsons for some traction.
The plan is to set the 12 bolt for a 3:08 which should be a great street/freeway gear and give me a little more go light to light.

Instg8ter is offline  
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion

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
69 GTO RAIII - Which After Market RA Exhaust Manifold? Lfryklu Intake and Exhaust Discussions 2 05-04-2019 01:41 AM
Log manifold downpipe gasket? bobby326 1964-1974 Tempest, Lemans & GTO General Discussion 1 01-11-2015 06:17 PM
intake manifold gasket Topkat 1964-1974 Tempest, Lemans & GTO General Discussion 6 08-16-2011 03:08 PM
Actual differences between and RA block and non RA block DrBoeing 1964-1974 Tempest, LeMans & GTO Technical and Electrical Wiring 0 04-26-2010 12:07 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