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Unread 10-31-2011, 12:07 PM   #1
Hurricane4
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Carburetor Spacer for Edelbrock Performer AMC

I spoke with someone on the Edelbrock tech line, searched this forum and the
Internet for info on the proper carburetor spacer to use on the 304 in my 7.

The 304 is equipped with an Edelbrock Performer AMC 2131 dual-plane intake
and a new in the box ready to install Edelbrock Thunder AVS model 1802 -
500cfm manual choke carburetor.

The old carburetor was a Performer 1405 - 600cfm manual choke with a Mr
Gasket one inch open spacer.

Edelbrock is telling me to use either the . . .

8723 half inch 4 hole square bore wood fiber laminate spacer or the

8711 one inch 4 hole square bore phenolic spacer.

I am leaning toward a divided spacer like the Edelbrock 8715 (half inch) or
8714 (one inch) to match up with the dual-plan intake.

Any suggestions on the spacer?

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Unread 10-31-2011, 03:01 PM   #2
Mike78cj7
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I have the same intake and carb on my 304 as you. I bought a edelbrock divided heat insulator. I think it was 3/8. I only have ran it a few times so not sure yet how well it works.
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Unread 10-31-2011, 06:07 PM   #3
Hurricane4
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Mike - Are you using the Edelbrock heat insulator gasket - part number 9266?

Per Edelbrock web site:

Divided Square-Bore Heat Insulator Gasket - 0.320" thick.
#9266 features a divided center which is designed to seal the carburetor to
dual-plane manifolds including Performer, Performer RPM and most RPM Air-
Gap manifolds."

What kind of material is this gasket made out of? Thanks.
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Unread 10-31-2011, 06:20 PM   #4
Hurricane4
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Here is a photo of the Edelbrock heat insulator gasket for a dual-plane
intake manifold:
9266.jpg  
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Unread 10-31-2011, 06:59 PM   #5
swatson454
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^^^ That's a pretty darn good gasket.


Shawn
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Unread 10-31-2011, 07:49 PM   #6
bigredisb
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While I agree that's a good gasket I had better luck with the edelbrock wood spacer / insulator. It keeps the carb very cool.
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Unread 10-31-2011, 08:06 PM   #7
Hurricane4
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I just don't know about a wood spacer.

What about the Edelbrock heat insulator gasket 9266 (.320 inch) on the
intake, then the Edelbrock 8715 Aluminum spacer (.500 inch), gasket and
carb?

Best of both worlds? A little less height than the original 1 inch Mr Gasket
open spacer and this setup marches the Performer AMC 2131 dual-plane
intake.

Thoughts? Thanks for everyones input! Much appreciated!
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Unread 10-31-2011, 08:31 PM   #8
Mike78cj7
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Yes that's what I have the 9266. Not sure what its made of. Its not aluminum or wood its more of a resin and some sort of pressed fiber. I bought it cause I don't understand how aluminum can be an insulator. Wood just doesn't seem like it would last long. So I bought the one edelbrock recommended for their intake and carbs. Plus its not expensive.
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Unread 10-31-2011, 08:33 PM   #9
Hurricane4
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Thanks Mike. I am ordering the Edelbrock heat insulator gasket 9266 tonight.

Hopefully I will have everything back together by this week-end.
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Unread 11-09-2011, 09:47 PM   #10
Hurricane4
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I installed the Edelbrock 1802 Thunder Series 500cfm vacuum secondary carb
with the 9266 heat insulator gasket this past week end. The 9266 gasket and
carb fit fine on the Edelbrock 2131 Performer intake sitting on the 304.

Cold starts and warm starts are very much improved but I still have a miss at
idle and part throttle that starts to go away as I accelerate somewhere
between 1500 and 2000 RPM. This problem began about a month ago with
the old carb - 600cfm Edelbrock Performer with mechanical secondary.
I switched carbs because I could not get the 600cfm carb to work like I
wanted.

Highway speeds are no problem but the CJ feels like it is lugging at lower
speeds. I need to check the timing and plugs as well as the idle/mixture
with a vacuum gauge.

The plug wires look "OK" and the inside of the distributor cap shows no signs
of major wear - looks fairly new. PO said he installed new cap, rotor, wires.

I ditched the open air cleaner and found this air cleaner from a V8 Dodge full
size van that fit the Edelbrock carb fine and cleared everything. Take a
look. This really helped almost eliminate the fuel odor in the garage when I
pulled the Jeep in and did not affect performance as far as I could tell. Now
I need to fab a cold air intake tube.

Air Cleaner housing part number: 53008275

Air Cleaner Duct (angled plastic adapter) part number: 53006259

Air Cleaner Element: Purolator A40004 (NAPA was closed Sunday)

Thanks for everyones help. Much appreciated.
img_0003.jpg   img_0007.jpg   img_0009.jpg   img_0012.jpg  
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