Drag Racing 1/4 Mile times 0-60 Dyno Fast Cars Muscle Cars

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.


 


More Videos...


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.





How to adjust Quadrajet secondary air doors
These take some trial and error to get them adjusted so that there is no bog, but it's not hard to do-here's how.





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!





Everything you wanted to know about automatic chokes but were afraid to ask pt4
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.





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. Enjoy!





The Infamous Quadrajet Moan
Making a full-throttle pull on the chassis Dyno with our 1972 Pontiac Trans Am with 455 H.O. engine.





Rochester Carburetor Trick!
If your Rochester Quadrajet or Dualjet Carburetor is Hesitating try this Trick!





How to measure and adjust Quadrajet float level
I have had several requests for this, so here you go: 1. The airhorn has to be removed to do this, but the carburetor does not have to be removed from the engine. 2. Some data says to measure from the toe(end that is opposite from the hinge), some say 5/16 inward from the end, etc. I suggest following the specs for your particular carburetor. 3. With the float in the raised position and the inlet needle lightly seated, measure from the top of the float to the top edge of the carburetor with NO gasket in place. If you have to adjust the float, bend at the area that has the cutouts, 4, If you are experiencing flooding issues then it is an excellent time to install a new needle/seat and float and that should cure flooding problems that are not choke-related.





Decoding a Rochester Quadrajet part 1: The name
Rochester Quadrajets tend to mystify people because of the various model names assigned to them by GM. Add to that a redesign in the '70s and the confusion only grows. In this video we'll learn the different model names and also how to differentiate between early and later-model Qjets. Enjoy!





quadrajet-cam
See 1976 Chevrolet pickup with Rochester quadrajet upgrade on SBC 350 V8. We removed the hood, mounted a camera looking down on the air horn, and took it for a spin, running wide open on an uphill grade. See how the secondary air valve responds to rpm drop at each upshift of the THM. Also included is a smoking burnout.





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.





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





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.





Motorcycle Mikuni CV Carburetor Cleaning for Suzuki, Honda, Yamaha Tutorial
Links below. Step by step instruction on how to disassemble, clean and assemble Mikuni CV Carburetors for Suzuki, Honda, Yamaha motorcycles... I hope you find this tutorial informative if long. For parts for your Vintage Japanese Motorcycle, please visit http://z1enterprises.com These guys always have the best prices and fastest shipping. Thank you for watching. Anti Seize Lubricant http://amzn.to/1bKe5HH





How to rebuild a Rochester Quadrajet part 4




Which car is faster? Which Car is Faster?





Similar 1/4 mile timeslips to browse:

2006 Mazda 3 : 10.150 @ 134.000
Vincent Tiaga, Engine: Mazda I4, Supercharger: na Turbos: na Tires: M&H


2005 Mazda 3 SP23: 11.659 @ 128.790
Kurt Scott, Engine: 2.3L, Supercharger: N/A Turbos: GT3582


2008 Mazda 3 mazdaspeed3: 11.682 @ 117.170
NJSPEED3, Engine: 2.3L mzr/disi , Turbos: T3 HTA3586 .82ar


2008 Mazda 3 MPS: 12.350 @ 119.830
RE-ACTIONENGSPEED3, Engine: mzr, Turbos: k4 hybrid


2009 Mazda 3 Speed3: 12.737 @ 108.510
Daniel Lalonde, Engine: mzrdisi 2,3, Turbos: k04 Tires: Toyo RA1 235/40/17@16psi


2008 Mazda 3 Mazdaspeed 3: 12.793 @ 106.900
driver311, Tires: m@h 24.5x8.5x15 inch slicks


2007 Mazda 3 Mazdaspeed: 12.847 @ 111.635
Dave, Engine: 2.3L MRZ DISI TURBO, Turbos: stock Tires: pontenza


2007 Mazda 3 Mazdaspeed 3: 12.906 @ 111.140
Laloosh, Tires: STREET


2013 Mazda 3 MAZDASPEED 3: 12.988 @ 107.850
Michael Vincent Sarricchio, Engine: MZR DISI, Turbos: STOCK K04 Tires: FACTORY TIRE


2007 Mazda 3 Speed3: 13.190 @ 110.670
Kyle Hasenheyer, Engine: Stock engine, Turbos: Stock K04 turbo Tires: Venezia Crusade HP


2010 Mazda 3 Mazdaspeed 3: 13.264 @ 108.230
Jimmy, Engine: Stock, Supercharger: NA Turbos: Stock Tires: G-force T/A KDW 2's


2008 Mazda 3 Mazdaspeed3 Grand Touring: 13.330 @ 107.980
James Rondepierre, Engine: 2.3L Direct Injected, Turbocharged, Intercooled, Supercharger: N/A Turbos: K04 STOCK Tires: HANKOOK VENTUS V12 EVO (STREET TIRES) (25PSI)


2007 Mazda 3 MazdaSpeed 3: 13.394 @ 104.330
Brandon,


2010 Mazda 3 Mazdaspeed 3: 13.485 @ 108.840
Michael Loopy, Engine: 2.3 litre, Turbos: Stock K04


2007 Mazda 3 Mazdaspeed3 GT: 13.488 @ 103.220
Matt, Engine: 2.3 MZR turbo, Supercharger: n/a Turbos: stock Tires: 245/50/16 Nitto NT555 Extreme Drag's for track onl


2008 Mazda 3 mazdaspeed3: 13.555 @ 103.430
mike speed, Engine: stock, Turbos: stock Tires: winter tire front


2008 Mazda 3 Mazdaspeed 3: 13.565 @ 104.700
Darryn Nine, Engine: 2.3L Turbo, Turbos: Stock K04 Tires: 225/45/18 Achilles ATR Sport


2011 Mazda 3 Mazdaspeed: 13.572 @ 106.990
Justin, Engine: 2.3 DISI, Turbos: K04


2009 Mazda 3 Speed 3: 13.714 @ 102.430
zack, Engine: intake, BOV, Supercharger: n/a Turbos: stock Tires: stock


2008 Mazda 3 Mazdaspeed3: 13.736 @ 102.340
BLKSp33d3, Engine: 2.3L DISI Turbo, Turbos: Stock KO4


 


©2014 DragTimes - Disclaimer