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

P1010231.MOV

Rochester on 253 let the secondaries open


 


More Videos...


for Tim - Rochester tips





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.





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.





re-jet your Quadrajet (part 1)
rejetting a quadrajet





Rochester QuadraJet M4ML
Quadrajet that i tweaked on a HDT VH Commodore - fast acting secondaries.





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.





Quadrajet sound
Q jet secondary operation





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 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





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.





750 vs. 800cfm Rochester Quadrajets-how to tell them apart
There exists a ton of misinformation regarding the actual airflow capacity of the Rochester Quadrajet. Not many people know how many variations there are or how to tell them apart. Here is a simple video explaining how to identify each size based on casting design. I will cover the "cfm-limited" carbs in a separate video.





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.





How to de-bog your Quadrajet part 2
The Rochester Quadrajet has gotten a bad rap over the years, but it's actually an excellent carburetor once you understand how they work. Often referred to as "Quadrabog" or "Quadrajunk", many of the issues these units suffer stem from neglect, or "modifications" that do more harm than good. Being a spreadbore, air-valve secondary design, the Quadrajet is capable of flowing 750 or 800 cfm of airflow, eliminating the need to buy different carburetors when your set-up changes. In addition, the small primaries make for great drivability and fuel economy. In this clip, I'll discuss theory of operation on the secondary side, since that's where most problems arise. So, leave your preconceived notions at the door and let's see what makes these carburetors tick.





How to rebuild a Rochestor Quadrajet part 1
Introduction and beginning the disassembly process





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!




Which car is faster? Which Car is Faster?





Similar 1/4 mile timeslips to browse:

1993 Toyota MR2 GTS: 10.050 @ 138.000
Michael Lantigua, Engine: 5s, Turbos: PRESICION


1993 Toyota MR2 Turbo: 10.910 @ 127.570
Ray Bridenstine, Engine: 2.0 Liter, Turbos: Greddy T78 Tires: et street


1991 Toyota MR2 Coupe: 10.943 @ 129.800
Jeff Fazio, Engine: 3SGTE 2.149, Turbos: GT35R Tires: BFG Drag Radials


1994 Toyota MR2 : 11.030 @ 115.000
Thomas Clark, Engine: 2.0, Turbos: turbonetics ballbearing Tires: NITTO NT555R 335/3519 NITTO NT555ZR 255/4019


1992 Toyota MR2 Turbo: 11.038 @ 125.950
Jeffrey Burke, Engine: 2.0 liter 3SGTE, Turbos: Garrett GT35-R Tires: Mickey Thompson 10x15x26 Drag slicks


2002 Honda Super Hawk : 11.090 @ 122.000
vtf rider,


1991 Toyota MR2 Turbo: 11.185 @ 125.620
Kris Osheim, Engine: 2.2L 3sgte Gen 3 stroker, Turbos: Street Brawler GT35R Tires: BFG Drag Radials 235/60-15


1997 Honda Super Hawk VTR1000F: 11.274 @ 125.180
Steve Rokfalussy,


1991 Toyota MR2 SW20: 11.280 @ 125.500
Kazu Ikeda, Engine: 3S-GTE Gen.II (JDM), Turbos: CT-26 Hybrid, 60trim Tires: F=175/65/14 R=26/8.5/14 M/TSlicks


1998 Isuzu I-Mark rs: 11.300 @ 127.000
mike kuriger, Engine: 1.8 4 cylinder, Turbos: t3/t4


1989 Isuzu I-Mark rs: 11.300 @ 125.000
michael kuriger, Engine: 1.8, Turbos: t3/t4 Tires: 26x8 slicks


1998 Honda Super Hawk VTR1000F: 11.369 @ 119.680
Dave Luzadder Jr, Engine: 996cc V-Twin, Tires: Dunlop D208


1986 Toyota MR2 AW11: 11.596 @ 118.096
Hector Rodriguez, Engine: 4agze, Turbos: Garrett T3 .63 a/r stage 3 Turbine, T4 .60 a/r 57 trim Compressor Tires: Nitto NT555R 20555/14


1991 Toyota MR2 GTS Turbo: 11.700 @ 0.000
Juan B. Pena, Engine: Gen 3 3SGTE, Supercharger: NON Turbos: GT30R Tires: Front 215/45/17 rear 225/45/17


1990 Toyota MR2 SW20: 11.768 @ 122.380
Jason Walker, Engine: 3SGTE, Turbos: TO4e custom wheels Tires: falken azenis RT215 - street tyres


1992 Toyota MR2 Turbo: 12.250 @ 120.190
Enrique Aguilera, Engine: 3sgte, Turbos: Garret GT3071 Tires: 17


1992 Toyota MR2 Turbo: 12.463 @ 110.030
Adam Crews, Engine: 1994 Gen3 JDM 3SGTE, Turbos: GT28RS Tires: 255/35/18 Falken GR Beta FK 451


1985 Toyota MR2 MK1: 12.500 @ 122.900
Thags.Govender, Engine: 1600 4AGZE, Turbos: TURBONETICS T3/4BSTGV 60-1


1991 Toyota MR2 Turbo: 12.511 @ 99.910
Cliff Taylor, Engine: 2.0, Supercharger: none Turbos: CT-26 Tires: Slicks


1986 Toyota MR2 AW11: 12.584 @ 110.850
Héctor Rodríguez, Engine: 4AGTE, Turbos: T3 .48 a/r stage 3 Turbine / T4 .60 a/r 57 trim Compressor Tires: Nitto NT555R 205/55/14


 


©2014 DragTimes - Disclaimer