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#1
09-26-2023, 07:36 PM
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Holley 4777-6 Rebuild- Ball bearing?
So in the process of dissembling a 650 double pumper 4777-6 for rebuild, a very small ball bearing fell out of an unknown location. The Holley Renew Kit 37-485 I'm using came with two ball bearings of different sizes but the exploded view shows a ball bearing used in much older carb models in the accelerator pump discharge nozzle assembly. Anyone know where a ball bearing goes in a later model? Mine has a 2210 under the 4777-6
FWIW, I used this YT video for disassembly and rebuild : https://youtu.be/MeHUwEr8-XA?si=STtjcxveNCiLT8Qe
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Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears '64 LeMans 400/461, #16 Heads, HR 230/236, TKO600, 9inch Rear, 3.89 gears '69 LeMans Vert, 350, #47 heads: Non-running project |
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#2
09-26-2023, 09:32 PM
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Most kits have more parts than needed. Your kit might have enough parts to do vacuum secondary carbs, also. Older vacuum secondary carbs had a check ball where the secondary diaphragm housing attaches to the main body.
I'm pretty sure there are no "balls" in a double pumper. Tom V. ?
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1977 Black Trans Am 180 HP Auto, essentially base model T/A. I'm the original owner, purchased May 7, 1977. Shut it off Shut it off Buddy, I just shut your Prius down... 
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#3
09-26-2023, 09:45 PM
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The older ones had balls in the accel pumps.
The balls were in the fuel bowls before they went to rubbers.  Oh, and yes, there is a ball in the vac sec housing. Last edited by PunchT37; 09-26-2023 at 09:51 PM. |
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#4
09-26-2023, 10:00 PM
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Quote:
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Carburetor building & modification services Servicing the Pontiac community over 20 years |
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#5
09-26-2023, 10:12 PM
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Thanks all -
Weird - still have no idea where the ball came from when I disassembled. Any way to check and determine if my accelerator pump nozzles are the ball types? Otherwise, based on the braintrust I’ll proceed ball-less!
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Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears '64 LeMans 400/461, #16 Heads, HR 230/236, TKO600, 9inch Rear, 3.89 gears '69 LeMans Vert, 350, #47 heads: Non-running project |
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#6
09-26-2023, 10:25 PM
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 Like this. |
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#7
09-26-2023, 10:40 PM
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Gotcha- mine has a rubber plug with a nipple
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Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears '64 LeMans 400/461, #16 Heads, HR 230/236, TKO600, 9inch Rear, 3.89 gears '69 LeMans Vert, 350, #47 heads: Non-running project |
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#8
09-26-2023, 10:42 PM
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Quote:
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#9
09-27-2023, 01:50 PM
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Here's a pic of the early-style check ball
We've had several like this over the years.
Later versions had the upside-down red rubber umbrella-style check valve. |
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