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!
New quadrajet set up
New air-gap manifold and custom/rebuilt q-jet. Sounds good but I still need to set the timing on the distributor and the carb is tuned already. Hope you like, nothing to fancy just a few revs and walk around...the Exhaust is true dual no x/h pipe and it has cherry bomb glasspacks(3 inch)
Dave Dettmann's GTO Judge Convertible
Filmed at the 2004 Harshaw car show, Dave shows off his 1972 GTO convertible. He sold the car in 2005 to move to Florida, and in an incredible twist of fate, the guy who had it located Dave in Florida to see if he wanted to buy it back. YES was the answer, and now it's back home. The car has been a part of Dave's life for 18 years.
1972 Pontiac Firebird Formula 400
For more info about this restoration go to www.HoggyStyle.com
This is 1 of only 4167 cars built. Fully restored 1972 Pontiac Firebird Formula 400. A very rare car because of the UAW strike in 1972.
photos of restoration at www.HoggyStyle.com
how to minimize engine bog with a Quadrajet carb
this is to minimize engine bog when the pedal is to the metal. do not over tighten, very small spring...you want to try 1/4 turns or 1/2...q-jets are good if tuned properly. also when you are tightening screw it will have tension on it so keep the screwdriver firm. 1986 gmc sierra single straightpipe to cherrybomb. you will need a small flathead screwdriver and a 3/32 allen key. be sure not to tighten to much or else your vacuum secondary flaps wont open.
1972 GTO 400 4 speed numbers matching
SOLD! SOLD! SOLD! View our other 200 plus classic muscle and sports cars at www.pjsautoworld.com or call us at 727-446-9999 We buy sell and trade all kinds of vehicles and water crafts.1972 Pontiac GTO For Sale!!! Matching numbers L78 400 cubic inch V8, Muncie 4 speed transmission, power disc brakes, powers steering, A/C, color keyed dual driving mirrors, rear deck spoiler, Honey comb wheels with P225/70/R15 Uniroyal Tiger Paw tires, original Lucerne blue car, rear deck spoiler, Judge stripe package, soft ray tinted glass, power windows, windshield with built in antenna, AM radio, tachometer dash, day night rearview mirror, bucket seats, console. Make your friends jealous with this beautiful GTO!!!! www.pjsautoworld.com or call at 727-446-9999 toll free 1-866-820-4444
How to de-bog your Quadrajet part 1
Sorry guys, I got the videos a bit out of order.
The Rochester Quadrajet has gotten a bad rap over the years, often called a Quadrabog or Quadrajunk.
In fact, this is a great multipurpose carbureter once you understand how they work and what not to do to them.
In this clip I introduce you to the Quadrajet and begin explaining the theory of operation of these units.
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!
Under the hood.MP4
Under the hood of the 1968 Oldsmobile Toronado.
This is the original 455 engine and original turbo-hydramatic 425 automatic transmission (numbers match). 1968 is the first year that the 455 engine was available in the Toronado. Specifications include 10.5:1 compression, 4 barrel Rochester Quadrajet carb, 375 horsepower.
The A/C has been retrofitted to R134a. The ignition system has been retrofitted to electronic (Pertronix), so no more points to adjust. Battery has been replaced with maintenance-free type, and the cables were replaced with OEM style Spring-Ring type.
MPSoup presents: 1972 Pontiac GTO
Right around the corner from my House there is a Murray's Speed and Custom store, they were hanging out on a Saturday along with some rare Collectible Muscle Cars, but this one catch my eye a 1972 Pontiac GTO in pristine conditions, hope you enjoy.
Starting the 1972 GTO
Idle smoothing out on the first start up of the 1972 GTO in over ten years. Cylinders are full of Marvel Mystery Oil to loosen up the works
How to debog your Quadrajet part 3
In the first two videos we looked at operational theory of the Quadrajet. In this episode we'll explore a couple mistakes the home mechanic often makes in an effort to improve the performance of this unit.
132563 / 1972 Pontiac GTO
For more information on this vehicle visit http://tinyurl.com/7apck5f
One of the most aggressive looking GTO's ever built the 1972 model was once again an options package and had a pile of comfort and style while retaining much of the bite of its forebears. This very cool Lucerne Blue number retains all of its original body panels, its original 400ci engine, is exactly as the Pontiac Historical Society documents lay it out and it's a four speed - that's the way you want one. Great cars to drive these tigers are collectables on the rise!
Underneath, you'll find an exceptionally clean chassis. This isn't a full frame off restoration - it didn't need one! Those are the original, clean floors, rust free frame and original rear end and handling package suspension. A quick evaluation is all that's necessary to see the original brake and fuel systems were up to their tasks and required no major replacement. That's the original undercoating you're looking at! So many of these cars died an early death it's refreshing to see one that's so clean!
Deep blue paint covers the rock solid, original exterior. The front end is definitely the best part with its straight body color bumper, excellent deeply inset grilles and aggressive hood. The GTO exclusive fenders with rear air extractors add interest to the sides of the car and look awesome with the mint Rally II wheels and new Firestone G70x15 Wide Ovals. The body is straight - care taken during its cosmetic restoration is evident. The trim and chrome is in excellent shape and is mostly original to the car. Bodywork was minimal and the finish work was done to a high standard. This is an attractive car with no hidden gremlins.
Comfortable black vinyl seats with new covers are the order of the day in the restored interior. The sculpted, clean dash pad covers the fully functional and clean original gauge cluster and nice original engine turned finish panels. Original door panels with original armrests are very nice, interior chrome is original and excellent and there's new carpet at your feet. The factory Formula steering wheel is in excellent shape and feels great in your hands. The center console with its Hurst shifter is also a clean original - there are no complaints from in here. The cabin's simply a great place to spend time!
Open the trunk to find a brand new Wide Oval mounted to a fifth, mint Rally II wheel. There's a new mat on the floor, the proper jack, new weather-stripping on the rail and a fresh coat of spatter paint underneath. Like the interior and undercarriage, there are no problems and no surprises.
Pop the hood and find the original, numbers matching engine in a detailed engine bay. That's the correct original air cleaner on top of the rebuilt mill. Some liberty was taken with the internals as the compression's up to around 10:1 and there's a Ram Air IV spec cam to get the power up to where you'd expect a 400 to be. Those are original chrome valve covers on the motor, a restored vacuum Booster and master cylinder on the firewall and a new battery and correct spring clamp cables tucked away in the corner. New belts and hoses (with correct tower clamps) are reliable replacements in this excellent driver!
Solid, original body and engine cars are tough to come by. So are desirable cars with great color combinations and manual transmissions. And, so are cars which are still affordable! This car's all three and it's only going to get more valuable over time! Don't wait on this one!