Thursday, May 1, 2014
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Labels:
500,
carburetor,
holley,
specs
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The Holley Performance Products company, based in Bowling Green, Kentucky, manufactures and repairs the Holley 500 Two Barrel carburetor as part of its full lineup of street performance, racing, specialty and marine carburetors. Holley carburetors are prominently known for their use by the National Association of Stock Car Auto Racing, Inc. (NASCAR). The Holley 500 Two Barrel carburetor can be installed in Ford, Chrysler and General Motors factory engines.
The Holley 500 Two Barrel carburetor is controlled by a manual choke. The carburetor features a 50-cc accelerator pump, and is suitable for street racing and officially sanctioned, oval-track racing organizations like NASCAR. The Holley 500 features one timed spark port, one full vacuum port and one PCV port. The Holley 500 Two Barrel carburetor is not compatible with automatic overdrive transmissions.
The Holley 500 Two Barrel carburetor has a primary metering jet rating of 73. The pump discharge nozzle has a rating of 0.028, and a power valve rating of 50. The Holley 500 Two Barrel carburetor is 12.250 inches in length, 11 inches in width and 7.5 inches in height.
The Holley 500 Two Barrel carburetor can be further modified with the application of several optional parts, including a Chrysler throttle lever extension, an electric choke, a manual choke control cable, a de-choke linkage, a jet kit and a Ford automatic transmission bracket kit. The Holley 500 Two Barrel carburetor can be used to modify Ford, Chrysler and General Motors factory engines.
Saturday, February 15, 2014
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Labels:
carburetor,
tools,
vacuum
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The carburetor mixes air and fuel for the engine inside a car or motorcycle. The two types of carburetors are vacuum operated and fixed venturi. In vacuum operated carburetors, the opening which the fuel passes through is regulated by a vacuum operated piston. The piston is connected to a needle that slides inside the fuel jet.
The Carburetor Synchronizer, Digital Vacuum Test is a digitally displayed synchronizer for balancing carburetors. It has a LCD screen that allows you to synchronize carburetors to the highest level of accuracy.
A pop- off gauge is used to calibrate carburetors pop-off pressure. It can read 1/2 psi increments up to 30 psi pressure.
A carburetor leak detector is used to check the needle and seat pressure with a gauge. You can also use it to check impulse diaphragms.
The Motion Pro Carb Adjusting Tool is designed to adjust Mikuni and Keihin vacuum operated carburetors and multiple units. It is 11 inches long and made of alloy steel.
The FCR Carb Tool is designed longer than a normal carb tool to reach into recessed cavities to adjust Keihin carburetors. It includes a long reach straight slot for pilot jets, a 6 millimeter hex for main jets and a 3 millimeter Allen wrench for removing float bowls.
A carburetor vacuum synchronizer is used to balance out carburetors. Mechanics and technicians can visually see the balance for a high level of accuracy. The synchronizer can be used on multiple carburetors.
A mini-T carburetor tool is a hand tool designed for quick jet changes. It includes a No. 2 Phillips bit, a No. 1 straight slot bit and a 6 millimeter hex socket.
An air blow gun blows dirt and dust using a hose and air inlet. You can use the rubber tip to clean out your carburetor jet.
Thursday, February 6, 2014
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Labels:
adjust,
carburetor,
tools,
walbro
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Carburetors combine fuel and air for internal combustion engines. Walbro carburetors are generally used for hand-held devices such as line-trimmers, chainsaws and leaf blowers. The tools used to adjust Walbro carburetors are not available to the general public from Walbro or Walbro warehouse distribution centers due to recent EPA and California Air Resources Board emissions regulations. The carburetors that these tools are used to adjust are emission-regulated carburetors, and adjustments of them are to be done by licensed professionals per an agreement between Walbro and the EPA.
This carburetor adjustment tool is used to adjust the needles on many Walbro carburetors. The "D" shape ers to the end of the screw, which a Phillips head or a flathead screwdriver will not fit. Only licensed professionals have access to this type of screwdriver, which allows for fine tuning of the carburetor while it is running. When a carburetor is adjusted or repaired, the D-shaped screws are loosely tightened while the engine is not running. To complete the adjustment, the engine is started and the screws are adjusted based on the sound the engine produces. Walbro carburetors are installed in two-cylinder engines, but if the mixture of gas and oil produced by the carburetor is too rich, the spark plug will intermittently misfire, making a sound like a four-cylinder engine. The D-shaped adjustment tool tightens the screws, or needles, until the engine sound is smooth and consistent.
This tool is used to remove the plastic limiter cap on some models of Walbro carburetors. Limiter caps are part of the tamper-proof system set in place by Walbro to abide by EPA regulations. Limiter caps cover the screws that adjust the oil and gas mixture. These caps are made of plastic, and the removal tool is similar to a metal hook, which pulls the cap off, leaving the screws open to adjustment.
Like the 500-20 limiter cap removal tool, the 500-508 is used to expose the screws for adjustment. The difference between the two is the size of the cap and the amount of space available to insert the hook for removal.
Thursday, September 26, 2013
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Labels:
a,
carburetor,
fuel,
going,
how,
no,
to,
troubleshoot
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No fuel at your carburetor can be caused by many things. It could be a simple issue like a fuel filter plugged so tight that no fuel can pass through. Another logical cause could be the fuel pump. If the fuel pump is electric, the 12-volt power may be shorted. A hole in the fuel line on the tank side could also cause the fuel pump to suck air instead of fuel from the fuel tank. There may not even be signs of leaking, since a fuel line leak on the tank side would have to be above the fuel level for leakage to show.
Instructions
1 Remove and check all fuel filters located in the fuel line and in the carburetor. Replace any and all filters that can not be confirmed good or have not been changed recently.
2 Inspect the fuel lines for leaks or kinks that might interfere with fuel flow.
3 Tap the top of the carburetor lightly to free a stuck needle valve or float that may be shutting off fuel to the carburetor float bowl.
4 Check the fuse marked fuel pump in the fuse box for any electric fuel pump equipped vehicles.
5 Connect a fuel pressure gauge to the Shrader valve if the vehicle has an electric fuel pump. Turn on the key and monitor the fuel pressure, it should be around 60-psi. If equipped with a mechanical fuel pump, remove the fuel line to the carburetor and connect a fuel gauge to the fuel pump. This should yield a low pressure, under 20-psi when the engine is cranked over.
6 Check the mechanical fuel pump by placing a fuel line into a gas can and attach the other end to the intake of the fuel pump. Crank the engine and check for fuel at the carburetor. The engine may start with fuel from a remote source such as a fuel can. If the pump draws fuel from the can and not the tank the tank screen must be inspected and or replaced. This would require removing the gas tank.
