Quadrajet Bushings, Choke and Fast Idle System
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- čas přidán 23. 07. 2024
- Part 2 of the Quadrajet 704 rebuild series, covers the installation of bronze primary throttle shaft bushings, which is a must-do upgrade for anyone rebuilding a Quadrajet, plus the installation of a new choke pull-off vacuum brake actuator and also putting the base throttle plate back together.
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CONTENTS
00:00 Sealing a Potential Vacuum Leak
01:04 Drilling the Base Plate for Bushings
02:22 Installing Bronze Throttle Shaft Bushings
05:03 Test-Fitting the Throttle Shaft
06:33 Installing a New Choke Pull-Off Vacuum Brake
09:51 Reassembling the Base/Throttle Plate
29:20 Applying Red Thread Locker to the Blade (Butterfly) Screws
30:20 Power Piston and Primary Metering Rods
Part 3, the series finale, will cover the final touches of carburetor reassembly as well as basic adjustments.
Thank you for watching! 🙂👍🏻
👉 Rochester Quadrajet Carburetor Disassembly Sequence: bit.ly/3ME3HYq
👉 Rochester Quadrajet Carburetor Reassembly Sequence: bit.ly/38FljUQ
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DISCLAIMER: Even though I like to wrench on Corvettes and most of my videos are of a how-to nature, I am not responsible nor liable should you decide to follow my musings on the subject.
The repairs and other work I do are for my own benefit and entertainment, and even though my videos may sound and appear to give technical how-to advice, that's not my intention.
Working on a vehicle is inherently dangerous. If you're not confident, qualified, or lack the tools to do the job correctly and safely, hire a licensed mechanic.
#corvettec3 #c3corvette #carburetor - Auta a dopravní prostředky
Great videos!.. I rebuilt one but not completely and your videos show all of the details.. great job!... I checked out the link for the throttle shaft drill bit.. they're not cheap at $80 but you do get enough bushings to do 5 carburetors so that evens it out.. I think I have that many on the shelf😀... Some people prefer Holley carburetors but I like the old quadrajets for some reason.. maybe because I had one in my 1977 350 Chevy truck and my 1977 Leocraft motorhome with a 454.. I had those secondaries open many times hauling trailers on some pretty hilly terrain and they treated me just fine🙂... I have saved your playlist and will be going through it shortly!
Quadrajets are great carburetors and usually misunderstood. Thank you for watching! 😊👍🏻
Absolutely my pleasure!... love the big secondaries haha
@@76vetteI managed to pick up what I believe is an 800 or 850? BOP carb with the bumps in the primaries and I just put it on a 1996 l31 350 roller camshaft roller lifter engine that I'm putting into my 1975 GMC.. it runs pretty good on the engine stand!
Great to see you saving these quadrajet's, I have a feeling alot of folk's will be glad to see these factory numbers carburetor's and wishing they had them instead of aftermarket ones in the future!
I like to buy Quadrajets if they are complete and in good condition. But they have to have the right numbers. You can still find them at swap meets for cheap prices. And it’s great there are plenty of replacement parts available. If anyone wants originality, the right carburetor is the way to go. 😊👍🏻
Both of your shaft spring videos have helped me tremendously!
Glad to hear it. Thank you for watching! 😊👍🏻
You my man are good at what you do..want to say thankyou..very well described..good images..just all good..
Thank you for the kind words and for watching my videos. 😊👍🏻
Your fantastic! Great detail. I'm going to recommend your videos to my friends. Thanks so much.
Thank you for watching! 😊👍🏻
You my friend are a life saver, I never worked on a carb before, just the newer stuff. I was wondering how the choke and fast idle were assembled. Thank you
Thank you! Glad to hear my video was helpful. 😊👍🏻
Gave up carbs a few years back for an EFI. Never to have a flooding, stuck choke, hard start, stuck float needle ever again. Drivability gains were ridiculous. Good to have a carb on hand though, for an EMP attack :)
If there’s an EMP attack (natural or man-made), I’d rather have an underground bunker. lol 😆
I don't see a link for the base plate drill bit and bushings, where do you get these? Good video.
Thanks. I’m pretty sure I bought the kit from Quadrajet Power. quadrajetpower.com/secondary-shaft-bushing-kit-drill-bit-bronze-bushings-screws/
@@76vette great, thanks
I have a question ....
Did they ever make a quadrajet where the typical. Timed vacume port had manifold vacume instead of timed ?
I have a 1983 Chevy g30 van (1ton) .
It has a sbc with a 4bbl quadrajet but the usual timed port has full time manifold vacume .
Is there something wrong with my carb or did they make some this way ?
It sounds like you have a Quadrajet 1708 which is a computer-controlled carb. On those carbs timing, along with other functions, is controlled by the ECM.
To confirm the type of carb your vehicle has, read the number on the throttle side of the carb. It should start with 1708. If someone installed an older one, it won’t run properly.