| [GMCnet] Edelbrock intake manifold installation procedure [message #111522] |
Mon, 10 January 2011 08:56 |
 |
USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma:
|
Senior Member |
|
|
G'day,
I figger'd I'd check the procedure that Edelbrock publishes to install their
aluminum manifold to see if there was anything in those procedures that
could help us install RPM manifolds correctly. Here's a link to their
instructions:
http://tinyurl.com/293wsvm
http://www.edelbrock.com/automotive_new/misc/tech_center/install/2000/2151.p
df
I have copied some of the instructions out of them FYI.
". GASKETS: Edelbrock intake gasket #7284 is recommended for most
applications. Do not use competition style intake gaskets for this street
manifold. Due to material deterioration over time, internal leakage of
vacuum, oil, and coolant may occur. For correct gasket kit when using #2151
in a marine / competition application, contact Mondello Performance, 1103
Paso Robles Street, Paso Robles, CA 93446, phone (805)237-8808."
http://www.edelbrock.com/automotive_new/mc/gaskets/individual_intake.shtml
Scroll down to Oldsmobile to see what they look like. Also Summit sells
these:
http://www.summitracing.com/parts/EDL-7284/
I believe there is an error in the Summit Overview:
"Edelbrock intake manifold gaskets are designed to give your manifold and
cylinder heads an exact seal with their composite and steel core
construction."
I do not believe they have a steel core. I bought a pair of these and they
were quite flexible which they wouldn't be if they had a steel cor. I have
submitted a query to Summit Tech Support regarding this and will advise.
". SPECIAL INSTRUCTIONS FOR MARINE AND COMPETITION APPLICATIONS - PLEASE
NOTE: Any implied or expressed warranty is void unless the "Special Exhaust
Plugs" are used with your engine. These steel plugs are furnished with each
Performer 455 manifold and must be installed in the exhaust crossover port
in each head. These plugs prevent cracking of the manifold caused by extreme
heat of the exhaust during extended periods of Wide Open Throttle. Use a
file to finish and fit the plugs until they are a light drive fit. With a
small hammer, tap them into each head until they are flush (to prevent
vacuum leaks). Additional plugs may be purchased under Edelbrock #2733. For
Heavy Vehicles (RVs, etc.) - Use the Special Exhaust Plugs supplied.
However, drill a 1/4"-5/16" hole through each plug before installation. This
step is highly recommended for all applications!"
Ken Henderson installed these plugs and it made a mess out of his cylinder
heads. However, as you can see he did not drill the holes. IIRC he has
explained that was because there were no instructions to do so accompanying
the plugs when he received them!
http://www.gmcmhphotos.com/photos/showgallery.php?cat=3057
Others have reported installing the plugs and drilling them and as far as
they knew all was well. Here's a Picture that Arch posted showing that he
had welded the plugs in:
http://www.gmcmhphotos.com/photos/showphoto.php?photo=31&cat=3008
"INSTALLATION:
1. Use only recommended intake gaskets set when installing this intake
manifold.
2. Fully clean the cylinder head intake flanges and the engine block end
seal surfaces.
3. Apply Edelbrock Gasgacinch sealant P/N 9300 to both cylinder head flanges
and to the cylinder head side of the gaskets, allow to air dry, and attach
the intake gaskets.
4. Do not use cork or rubber end seals. Use RTV silicone sealer instead.
Apply a i/4" high bead across each block end seal surface, overlapping the
intake gasket at the four corners. This method will eliminate end seal
slippage.
6. Set Intake manifold on engine.
5. Torque all of the manifold bolts in two steps by the sequence shown in
Figure 1 to 25 ft/lbs."
NOTE: Figure 1 instructs you to tighten the bolts starting at the outside
and working inwards.
http://tinyurl.com/293wsvm
http://www.edelbrock.com/automotive_new/misc/tech_center/install/2000/2151.p
df
Regards,
Rob M.
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
