Cliff's Quadrajet Parts and Rebuild Kits

General Category => Quadrajet Carb Talk and Tips => Topic started by: Shark Racer on April 23, 2013, 02:04:25 PM

Title: 76/77ish M4Ms, what's the triangular flap on front of airhorn?
Post by: Shark Racer on April 23, 2013, 02:04:25 PM

(http://i.ebayimg.com/t/Quadra-Jet-Carburator-/00/s/OTU4WDE2MDA=/z/eK0AAMXQATlRZER8/$T2eC16F,!ygE9s7HHg,bBRZER7CU)g~~60_57.JPG)

Just where the front airhorn screw would be - what does this cover do?

I'm sure I've seen the answer somewhere, just having trouble placing it...

Title: Re: 76/77ish M4Ms, what's the triangular flap on front of airhorn?
Post by: Ethan1 on April 23, 2013, 02:40:07 PM

 I believe that is where the air bleed can be adjusted. Not 100% sure.

Title: Re: 76/77ish M4Ms, what's the triangular flap on front of airhorn?
Post by: Shark Racer on April 27, 2013, 12:48:34 AM

Well, I pulled the flap off and it's just a gaping hole that leads into the float area, near as I can tell. Was it meant for some kind of vent maybe? Perhaps it's where the air bleed used to be but is unused on these models?

There was a triangular rubber gasket underneath the metal flap, and it seemed pretty well sealed.

Title: Re: 76/77ish M4Ms, what's the triangular flap on front of airhorn?
Post by: Ethan1 on April 27, 2013, 04:18:23 PM

 Not sure either, Steve. Maybe someone else will know. ;)

Title: Re: 76/77ish M4Ms, what's the triangular flap on front of airhorn?
Post by: Shark Racer on April 29, 2013, 03:00:30 PM

Looking at a vendor's website who sells a replacement plate, they refer to it as a vent. Soooo - there we go. Just a vent. :)

Wonder what the history of those was. I'd guess they disappeared as part of evap concerns.