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More Quadrajet tuning, some things! Part one in this saga on Sept 13, 2010

The car has a slight stumble and surge at a light throttle cruise at about 55 to 60 MPH. By swapping out the .050 metering rods to .048 units, the stumble and driveability concerns are now gone. Going richer would mean worse fuel mileage one may think? No! Now that the mixture is right, LESS throttle opening is needed now, which means higher vacuum, and this way the metering rods will block off the correct amount of fuel, and in the proper timing and percentages, so the car runs much smoother. As stated many times, patience and reading up on, and understanding how these intricate carburetors work will help out very much! Enjoy!


 


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More Quadrajet tuning, some things! Part two in this Saga Sept 13, 2010
With the camera sitting on the oil filler cap a few more things to show how a metering rod system works on a carburetor. The car has a slight stumble and surge at a light throttle cruise at about 55 to 60 MPH. By swapping out the .050 metering rods to .048 units, the stumble and driveability concerns are now gone. Going richer would mean worse fuel mileage one may think? No! Now that the mixture is right, LESS throttle opening is needed now, which means higher vacuum, and this way the metering rods will block off the correct amount of fuel, and in the proper timing and percentages, so the car runs much smoother. As stated many times, patience and reading up on, and understanding how these intricate carburetors work will help out very much! Enjoy!





Leaky RV carb
Carb in my RV leaking around accelerator jet. looking for ideas as to where the leak is starting and what needs to be fixed.





Rochester Quadrajet Marine Carburetor Rebuild - Part 3 of 3
http://www.carburetor-parts.com is happy to provide the informational video about rebuilding the Quadrajet marine carburetor. Buy carburetor parts for this carburetor at: http://www.carburetor-parts.com/SearchResults.asp?Search=marine&Search.x=0& Search.y=0





Replacing an HEI Coil & Quadrajet Comments (Not a "How-to")
The '77 Olds 350 suddenly developed a pretty nasty miss under load, which slowly worsened to a miss at idle too. If you got close to the distributor with the engine running, you could hear the coil arcing all over the place! The Delta is equipped with the usual GM HEI distributor.





Quadrajet HP for $40.
A GEARHEAD PRODUCTION. Throw away the Edelbrock and the Holley and save your money. You can build a hp QJ for less, and get better performance and mpg too.





Quadrajet air leak fix and warped air horn repair tutorial.
How to identify a Quadrajet with a warped air horn without diss assembly or running it on a car. These tips would have saved me time and money which is why I made this video. I also discus how to repair a warped air horn and prevent your air horn from warping in the first place. If you have a whistling noise just off idle then you got some work to do. You will never get your engine tuned right, your cold start performing or decent fuel economy unless your four barrel carburetor is just right. Special thanks to Cliff Ruggles for his book Rochester Quadrajet carburetors and to my brother Adrian who spent hours on tuning and fitting. See this video for description of the technique I used to straighten a warped air horn. http://www.youtube.com/watch?v=l_SgQiVf3_0&feature=youtu.be here is a technique for re-bushing the throttle shaft without drilling. http://rmcavoy.freeshell.org/Q_Jet_bushings.html





Quadrajet parts description ""subscribe!!""
Home sick today...figured id do another instructional video on my q-jet





Vacuum Lines Connection
Footage taken from Holley Carburetor Installation & Tuning DVD





Rochester Quadrajet Marine Carburetor Rebuild Part 2 of 3
http://www.carburetor-parts.com is happy to provide this informational video about rebuilding the Quadrajet marine carburetor. You can buy marine kits here: http://www.carburetor-parts.com/SearchResults.asp?Search=marine+kit&Search. x=0&Search.y=0





re-jet your Quadrajet (part 2)
rejetting a Quadrajet





86 Monte Carlo SS - cleaning out the Quadrajet carb and flowmaster exhaust sound
This engine was pulled from the car in 1997 and left sitting in a crate until 2011. They left the fuel in the carb so as it evaporated it left deposits. Exhaust sound at 9:01 3 chamber Flowmasters, long tube headers. 2.25" pipes and I don't think there is a crossover tube.





Choke Adjustment on Rochester Carburetor By Hopkins
This video shows how to set the Automatic Choke on a Rochester Carburetor with a 350 (small block) chevy Engine,





Everything you wanted to know about automatic chokes but were afraid to ask
I've noticed many people drive vehicles with inoperative chokes. Even though chokes can be intimidating, repairing and adjusting them actually is very simple. So, stop pumping that accelerator and follow along as we look at how chokes work and how to repair them.





Identifying Quadrajet vacuum ports
I always see a lot of questions about what various vacuum ports do on a Quadrajet. Here's a general guide that will point you in the right direction. Remember that there were many different Qjets over the years and vacuum port locations and number will vary. This video is representative of 1975-90 carbs. Enjoy!





for Tim - Rochester tips




Which car is faster? Which Car is Faster?





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1991 Proton Saga : 15.700 @ 99.420
Dookie, Engine: 4g92 DOHC MIVEC, Turbos: N/A Tires: 195/15 Dunlop


 


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