How to rebuild a Rochester Quadrajet 4MV carburetor
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=Introduction= | =Introduction= | ||
| − | This article is written with the intention of informing, guiding and assisting the first-time builder who has never dealt with a carburetor before. It merges detailed, step-by-step directions, complete with images, links to online and print resources, and a multitude of helpful tips and pointers collected from the members of [http://www.Hotrodders.com Hotrodders] forum | + | This article is written with the intention of informing, guiding and assisting the first-time builder who has never dealt with a carburetor before. It merges detailed, step-by-step directions, complete with images, links to online and print resources, and a multitude of helpful tips and pointers collected from the members of [http://www.Hotrodders.com '''Hotrodders'''] forum. |
| − | The article is also meant to complement the rebuild guide books available | + | The article is also meant to complement the rebuild guide books available, shedding extra light on any topic or procedure that may require further explanation. In the future, as time allows for updates, the article will cite sections and passages from related books to help the reader follow along with ease. |
| − | Although the article specifically deals with the Rochester Quadrajet 4MV model, the information found here is useful for working on other Rochester | + | Although the article specifically deals with the Rochester Quadrajet (aka "Q-jet, qjet, etc.) 4MV model, the information found here is useful for working on other Rochester Q-jet models as well. |
At times, the reader may encounter differing viewpoints, especially when dealing with certain repair options. It is up to the reader to decide which method works best. If confusion persists or further advice is needed, it is highly recommended that the reader visit the [http://www.hotrodders.com Hotrodders] forum and ask for assistance from fellow members. | At times, the reader may encounter differing viewpoints, especially when dealing with certain repair options. It is up to the reader to decide which method works best. If confusion persists or further advice is needed, it is highly recommended that the reader visit the [http://www.hotrodders.com Hotrodders] forum and ask for assistance from fellow members. | ||
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=Planning and organization= | =Planning and organization= | ||
===A. Becoming familiar with the carburetor=== | ===A. Becoming familiar with the carburetor=== | ||
| − | + | If you have never dealt with a carburetor in your life, it is important to familiarize yourself with the various components. Please refer to the '''''Books/ Guides/ Websites /Multimedia''''' section immediately below for helpful materials. | |
| − | If you have never dealt with a carburetor in your life, it is important to familiarize yourself with the various components. Please refer to the '''''Books/ Guides/ Websites /Multimedia''''' section below for helpful materials. | + | |
=====Books/guides/websites/multimedia===== | =====Books/guides/websites/multimedia===== | ||
| − | :''''' | + | :[http://www.cliffshighperformance.com/buy_book_all.html '''''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. |
| − | :In addition to his book, Cliff Ruggles also maintains a website ([http://www.cliffshighperformance.com/ Cliff's High Performance]), with a forum dedicated to discussing carburetors. | + | :In addition to his book, Cliff Ruggles also maintains a website ([http://www.cliffshighperformance.com/ '''Cliff's High Performance''']), with a forum dedicated to discussing carburetors. |
| − | :Another highly reviewed title is ''''' | + | :Another highly reviewed title is [http://www.amazon.com/Rochester-Carburetors-Doug-Roe/dp/0895863014 '''''Rochester Carburetors'''''] by Doug Roe. |
:Other titles devoted to Rochester Quadrajets are also available from retailers such as [http://www.barnesandnoble.com/ Barnes and Noble], [http://www.amazon.com Amazon], [http://www.ebay.com eBay] and its sister site [http://www.half.com Half.com]. | :Other titles devoted to Rochester Quadrajets are also available from retailers such as [http://www.barnesandnoble.com/ Barnes and Noble], [http://www.amazon.com Amazon], [http://www.ebay.com eBay] and its sister site [http://www.half.com Half.com]. | ||
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=====Carburetor identification: Locations and decoding===== | =====Carburetor identification: Locations and decoding===== | ||
| − | :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 identification number will help with ordering the correct | + | :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 identification number will help with ordering the correct parts or a rebuild kit. The number is usually found as a stamping in the body of the carb on the driver side of the carburetor, running vertically up and down. Very early model Q-jets used a round disc attached to the drive side of the carb. These carbs have the less desirable needle and seat assembly and float fulcrum location, so unless the carb is being used on a restored or period correct build, the later carbs- especially those with the adjustable part throttle adjustment or 'APT' located on the airhorn- will be a better choice for a performance application. |
| − | [[File:Carburetor_Identification_Number.jpg|thumb|center|750x250px| | + | |
| + | For decoding the carb number, please see the following article for further information and assistance: '''[[Rochester Quadrajet carburetors: Identification and decoding]]''' | ||
| + | [[File:Carburetor_Identification_Number.jpg|thumb|center|750x250px|Location of 1968-up Q-jet carb number. Before this the carb number was stamped into a round disc located on the driver side of the carb, towards the front]] | ||
===B. Parts=== | ===B. Parts=== | ||
| − | + | ====Carburetor rebuild kits==== | |
| − | + | Available through various manufacturers. For user experiences, please check out the ''Hotrodders'' forum thread, [http://www.hotrodders.com/forum/q-jet-rebuild-kit-210485.html#post1502078 '''Q-jet rebuild kit''']. | |
| − | + | ====Individual parts==== | |
| + | Please refer to the '''''[[How to rebuild a Rochester Quadrajet 4MV carburetor#Quadrajet tuning and repair parts|Quadrajet tuning and repair parts]]''''' section below. | ||
| − | + | ====Sellers/sources==== | |
| + | *[http://www.cliffshighperformance.com/index.html '''Cliff's High Performance'''] | ||
| + | *[http://quadrajetparts.com/index.php '''QuadrajetParts.com'''] | ||
| + | *[http://www.carburetion.com/index.htm '''Carbs Unlimited'''] | ||
| + | *[http://www.carbkitsource.com/ '''The Carburetor Doctor'''] | ||
===C. Tools=== | ===C. Tools=== | ||
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*[http://www.carbkitsource.com/ The Carburetor Doctor] | *[http://www.carbkitsource.com/ The Carburetor Doctor] | ||
*[http://www.edelbrock.com/ Edelbrock] | *[http://www.edelbrock.com/ Edelbrock] | ||
| + | :[[How to rebuild a Rochester Quadrajet 4MV carburetor#Individual parts|Return to '''''Individual parts''''']], above. | ||
==Recommended Resources== | ==Recommended Resources== | ||
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