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.
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.
here is a technique for re-bushing the throttle shaft without drilling.
Rochester 2-Barrel M2MC Carburetor Jan 15, 2011
Taking on the project of resurrecting a Rochester M2MC 2-Barrel carburetor
for a vehicle a friend will be using in a demolition derby in February.
The M2MC was brought forth as an economy oriented carburetor intended for
smaller displacement engines in the late '70's - actually only a few years!
GM kinda cheated on this project by using the front half (primaries) of a
Quadrajet carburetor. The primaries on a Quadrajet are very tiny, meaning
high air velocity, in conjunction with a metering rod system and triple
venturi design assure top fuel efficiency. It comes at the expense the
engine, especially the V8 offerings, would be a little restricted in the
higher RPM ranges. In all honesty, the public had all but given up on
'performance' during that period. This particular example appears to have
suffered from a little water getting into it while it was sitting off of a
car a while ago. It will be cleaned before assemble with new gaskets, then
adjusted after it is reassembled.
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)
How to adjust Quadrajet/Dualjet fast idle
Quadrajet/Dualjet Rochesters have a fast idle adjustment screw that is
separate from the base idle screw.
Here's how to locate it.
Note: Ever since Charter "fixed" my internet and cable after the lightning
strike, it hasn't worked right. Go figure. So, if you see this posted then
I was finally successful in getting a video uploaded.
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
Terminator EFI Install and Overview - Chuck's Garage
Chuck installs Holley's brand new Terminator EFI system on his '70
Chevelle. First we take off the old carburetor and bolt on the new Holley
EFI Terminator throttle body. Then we mount the Terminator EFI ECU and
wiring harness and begin wiring and plugging everything up. From there we
go under the car and tackle the fuel system. After we get everything set up
with the handheld tuner we take the new Terminator EFI system on a test