Edelbrock performer carb owners manual

A - Not legal for sale or use on pollution controlled See our catalog for details. To order a catalog, call This manual will discuss the special points and unique features of the Demon carburetors, and the correct procedures for their proper installation and tuning.

The goal is to help you understand the thoughts behind the Demon, and to Just when you thought you knew it all, it happens.

The call from a consumer that makes you realize just how humbling it can be dealing with as many phone calls as we do day in and day out. Most of these calls are routine carburetor tuning questions and these routine calls make up a large percentage of the volume of.

Please study these instructions carefully before installing your new Edelbrock carburetor. This tuning manual is for Harley-. Davidson only! If you have any questions or problems, please call our Technical Hotline at: ext. Summit Racing. NOTE: These instructions must be read and fully understood before beginning installation.

Always wear safety glasses These wiring installation instructions are specific to the wiring harnesses included with this kit. If you are using a Cab Repair Panels. Cab Roof Light Kit. Cab Seal Kits. Cab Support. Cab to Frame Mounting.

Cable, Choke. Cable, Speedometer. Carburetor Manual. Carburetor Return Spring. Carburetor Stud Kit. Carburetor, Edelbrock. E-Comm Sales: Sales: Tech: Skip to the end of the images gallery. Skip to the beginning of the images gallery. Add to Wish List. Out of stock. SKU Fast Shipping.

Tech Support. Easy Returns. Fast shipping. Edelbrock prides themselves in ensuring all products are shipped as quickly as possible. Easy returns. Edelbrock offers a quick and painless return process on all new and unused products. Also, this design should cause no change to the fuel metering. If you are running a smaller air cleaner and have optimized the WOT with it in place, do not be surprised to find that the metering shifts RICHER when the air cleaner is removed.

Before proceeding please ensure you have installed your Edelbrock Performer Series Carburetor according to the Carburetor Installation Instructions included with the carburetor. The Edelbrock Performer Series Carburetor is designed to allow quick and easy changes to the metering. Virtually any change imaginable can be performed without removing the carburetor from the manifold, and the most common changes may be performed in less than five minutes without removal of the airhorn bowl cover.

After reading the Calibration procedures, the next step in calibrating your carburetor is to look at the Calibration Table for your model carburetor. Determine if you would like to go richer or leaner in the Cruise Mode and do the same for the Power Mode.

Select the number that is closest to intersection of your Cruise and Power Mode selections. This is your calibration reference number. For example, you have a Edelbrock Performer Series carburetor. You have determined by reading the rest of the manual you would like to go 1 stage lean in the Cruise Mode and 2 stages lean in the Power Mode.

The intersection of these two lines lies on the number Find the number 21 under the REF column. The jets you should use are.

Located at the very bottom of each Calibration Reference Chart is a guide for changing your Secondary Metering. This will be useful when calibrating the wide-open-throttle WOT. Before you attempt to establish a new calibration, be sure that the engine is in a sound state of tune. All ignition items must be in proper working order, including reasonably fresh plugs of the correct heat range. Timing should be properly set and the air filter element and fuel filter should be clean.

Proper fuel pressure should be verified and cracked or brittle vacuum lines should be eliminated. Flooding can be caused by dirt, small particles of hose cuttings, floats and inlet needles which have settled during shipping, or by other conditions as discussed below.

Each Edelbrock Performer Series carburetor is flow tested in the factory for both air and liquid flow so flooding is rare. However, for safety sake please observe this caution. When the fuel pump is turned on or when the engine is first started, watch closely for signs of flooding.

If flooding is apparent, tap the body of the carburetor lightly with a rawhide mallet or the wooden handle of a small hammer. If flooding continues, pinch the fuel line hose to shut off flow, run the engine to clear the carburetor, and let the fuel line flow again.

If flooding still continues, stop the engine. If neither is available, you will be able to use the speedometer in place of the tach for some of the procedures, but it will not be as convenient.

Without a vacuum gauge, some of the calibration procedures will be more difficult. Metering Rod and Step-Up Spring changes can typically be made in less than five minutes and without removing the carburetor.

Excessive torque will weaken or snap off the screw heads. If this happens, they may fall into the carb causing serious engine damage.

Finally, remove the 8 Airhorn Attaching Screws and remove the Airhorn from the carburetor body. A standard screwdriver can now be used to remove the appropriate Metering Jets. Once desired Metering Jets have been installed the carb may be reassembled by reversing this procedure. The idle air flow is controlled by a conventional screw that opens the Primary Throttles.

The following procedure should be used to set the idle mixture and speeds. Fully warm engine and ensure choke is fully open. Set desired speed with the air screw. Do not go rich beyond the maximum speed point. If the above changed the idle speed more than 40 RPM, then readjust the speed. Go leaner just enough to get a 20 RPM drop in speed. Reset the speed to the desired RPM. This is a Lean-Best Idle Set.

Setting richer than this will not improve idle quality or performance, but could tend to foul plugs. However, the high volatility has the disadvantage of allowing excessive vaporization of the fuel if the vehicle is operated in a heated area such as a garage. The idle will be erratic and not seem to be able to hold a set.

To resolve this type of problem, it is advisable to perform the final settings outdoors after the vehicle has been stabilized with a drive of several miles. Either condition can lead to poor levels of adjustability and erratic idles.

If the distributor is fitted with a vacuum advance unit, connect it directly to manifold vacuum. If you are not able to employ vacuum advance for some reason, then the mechanical curve should have a low limit, which will allow you to use plenty of initial spark advance.

When combined with a high idle air rate this can cause the Nozzles to discharge fuel at idle. With some cams, a stiffer spring pink or silver is necessary. Experimentation is the best way to determine which is best for your application.

The best place to perform your WOT calibration is on a chassis dyno. If one is not available then consider a safe, legal driving space, such as a drag strip where you are given E. As a rule, use the highest 50 percent of the real power band. If your engine makes good power up to RPM, then is a good range. If peak power is at , then would be a good pick. Time the acceleration with a stop-watch.

Be sure to time only the interval while the engine is sweeping through the selected range. Make enough timed accelerations to get a good average that is not affected by wind or grade.