How to rebuild a Rochester Quadrajet 4MV carburetor
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| − | ===Carburetor Identification=== | + | ===Carburetor Identification Decoding=== |
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| + | :Once it has been determined that your Rochester Quadrajet carburetor requires a rebuild, the first thing to do is to locate the identification number. The identifcation number will help with ordering the correct set of parts or a rebuild kit. | ||
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| + | ====Identification Number Location==== | ||
| + | :Necessary for ordering correct rebuild kits and parts. The number is usually found either as a tag or as a stamping in the body on the driver-side of the carburetor, running vertically up and down.'' ^1'' | ||
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| + | ====Identification Number Decoding==== | ||
| + | :Should a need arise for decoding, you can use the following information. | ||
:It is not uncommon for confusion to arise when decoding a Quadrajet carburetor. According to [http://www.recarbco.com/technical/rochester/qjet.html Recarbo Fuel Systems]: | :It is not uncommon for confusion to arise when decoding a Quadrajet carburetor. According to [http://www.recarbco.com/technical/rochester/qjet.html Recarbo Fuel Systems]: | ||
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| − | ====Online Sources for Identification==== | + | ====Online Sources for Identification and Decoding==== |
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:''[http://www.cliffshighperformance.com/tech_carb_ID_2.html Carburetor Designation/Identification]'' - Covers casting designations and identification numbers. From Cliff Ruggles' [http://www.cliffshighperformance.com/index.html Cliff's High Performance]. | :''[http://www.cliffshighperformance.com/tech_carb_ID_2.html Carburetor Designation/Identification]'' - Covers casting designations and identification numbers. From Cliff Ruggles' [http://www.cliffshighperformance.com/index.html Cliff's High Performance]. | ||
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====Parts Organizer==== | ====Parts Organizer==== | ||
| − | :The carburetor is held together and in place with a multitude of bolts of variuous sizes. There are also alot of small parts on the inside of the carburetor body. It is very important to use some sort of a parts organizer to separate everything. It does not have to be anything fancy. You can often use things usually found around the house such as cupcake pan, silverware tray, or an egg carton will do the job.''^2'' According to [http://www.hotrodders.com Hotrodders] forum member '''''trees''''': | + | :The carburetor is held together and in place with a multitude of bolts of variuous sizes. There are also alot of small parts on the inside of the carburetor body. It is very important to use some sort of a parts organizer to separate everything. It does not have to be anything fancy. You can often use things usually found around the house such as cupcake pan, silverware tray, or an egg carton will do the job.'' ^2'' According to [http://www.hotrodders.com Hotrodders] forum member '''''trees''''': |
| − | '' | + | :''<blockquote>"As a technique, I use two pans and lable each "bin" and place the old part in one bin and at the same time, I place the new part in the other pan. Most kits are 'generic' so this is the best time to pick out the part that matches the removed part and set the residual parts aside."'' ^3''</blockquote>'' |
====Tools==== | ====Tools==== | ||
| − | + | :*Socket wrench set | |
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| − | + | :*Open-end wrench set | |
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| − | + | :*Screwdrivers - various sizes | |
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| − | + | :*Punch | |
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| − | + | :*Hammer | |
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| + | :*Parts cleaning tray - Keeps the parts in place and also keeps any chemicals from spilling in undesired places. | ||
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| + | :*Parts cleaning brush - Used for cleaning off most of the grime and gunk off the carburetor parts after dippin ghem. | ||
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| + | :*Wire brush - Used for scrubbing off the touch spots after dipping. | ||
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| + | :* #7 drill bit ''^4'' | ||
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| + | :*Shop towels / rags | ||
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| + | :*Compressed air - For blow-drying carburetor parts after cleaning and washing them. | ||
====Chemicals==== | ====Chemicals==== | ||
| − | + | :*Parts cleaner dip - 1 gallon can is sufficient | |
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| + | :*Carburetor cleaner spray - A few cans should be kept on hand. | ||
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| − | :The only | + | :The only things you will need to keep an eye on are protecting the camera from grease and dip, and the battery life. Battery life varies from camera to camera, as well as their age. Make sure to keep the camera fully charged and as often as possible. If you keep the charger plugged into a socket close to where you are working, charging the battery during down time is a breeze. |
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====Books / Guides / Websites==== | ====Books / Guides / Websites==== | ||
| − | :'''''"How to Rebuild and Modify Rochester Quadrajet Carburetors"''''' by Cliff Ruggles is a frequent recommendation by the members of [http://www.hotrodders.com Hotrodders]forum. It is a highly-reviewed book | + | :'''''"How to Rebuild and Modify Rochester Quadrajet Carburetors"''''' by Cliff Ruggles is a frequent recommendation by the members of [http://www.hotrodders.com Hotrodders]forum. It is a highly-reviewed book and the author is considered a leading authority on Quadrajet carburetors. |
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===Safety=== | ===Safety=== | ||
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| + | Safety is always a top priority in any project, especially those which require tools and chemicals. Be sure to work in a place that can keep out children and animals. When using chemicals, it is a good idea to warn anyone nearby of fumes. | ||
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====Ventilation==== | ====Ventilation==== | ||
| + | :Ventitlation is very important when working with chemicals. For the rebuild, you will be using the Chem-Dip, which has strong fumes. If working inside the garage or other indoor places, be sure to keep the windows and doors fully open. If available, employ a large exhaust fan to suck out the fumes. | ||
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====Lighting==== | ====Lighting==== | ||
| + | :Carburetor rebuilds deal with small parts, precise measurements and various tools and chemicals. Proper lighting is key to getting the job done safely without errors or hazardous mistakes. | ||
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====Protection==== | ====Protection==== | ||
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=Procedures= | =Procedures= | ||
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