Unofficial Rochester Carburetors Web Site

Rochester Carburetors are (variously) the products of Rochester Products Division, General Motors and Magnetti Marelli (Weber U.S.A.).

For years Rochester carburetors have earned a reputation for reliability and durability. However, EFI has rendered carburetion obsolete (from an OEM point of veiw).

Lets face it; you are here because there just ain't no information, technical or otherwise on the internet about any Rochester carburetors.
Karl has decided to create such a place.
Anyone who believes they need any information about Rochester carburetors should invest in the Doug Roe book "Rochester Carburetors" from HP Books!! A valuable resource.

Some data found on these "pages" may be inaccurate. Neither Karl, Rochester Product Division,
Magnetti Marelli, Weber USA,or GM are liable for any damages resulting from any use or misuse
of any information found on this website.
Consider yourselves warned.

This is the 2-Jet in Karl's 1965 Oldsmobile Dynamic 88. Karl rebuilt it and could have done a better job the first time. That is a large part of the motivation for this site!

Air horn mutilation due to previous owner.
Inlet fitting and fuel line by Karl's hand.

Still March 2000

March 2000?????
Holy Cow, Karl really needs to improve this site!
Sorry if Karl dint answer your Email yet, Karl has quite a lot to do.
Every fair question gets an answer, eventually.......

Just to make it look like Karl's been working hard on this site, he put some
cutie-pie code on here to give ya a BOSS Mustang cursor.
Something for ya to play with until karl really updates this thing.

Karl's Qjet pix!

Also, some links are dead, that issue is being addressd.

A mini-FAQ is here now.
In the same sprit with which the Qjet disassembly pix went up, the FAQ will be started
with a "choke"/"idle" section based on a recent carb question that was answered quite thoroughly.

Rochester Carburetor FAQ

Please forgive the annoying pop-up windows. (You can do away with them by turning JAVA
off in your browser preferences menu.) They are a neccesary evil, but only until
Karl's master plan starts. Karl owns the rights to ""!
No, don't go there, it don't exist --- yet!

Coming soon to a URCWS near you!

Karl continues to answer Email questions as he is able.
When he cannot addressthe issue himself, he tries to consult others.
Please forgive if the reply is not timely.
Stay tuned!!

How To Decode Your Rochester Carburetor!

Some Common Problems with Rochester Carburetors!

A brief listing of Rochester Application Codes!

Rochester images & links to more!
Karl thanks those who have submitted and allowed Rochester links!
Carburetor Pix!

Websurfing gearheads unite!
Post your carb problems!

Rochester Carburetor Links!

Karl takes no responsibility for the contents of the following sites,
nor is he responsible for quality of service of these buisinesses.
Karl has placed these links as possible sources of further information.

Highly recommended: The Performance Professor!
Lectures on tech that performance AND economy-minded gearheads should know!

Sparky's Qjet Service
Get more Spark in your Quadrajet! Carbs Unlimited
A good site with exploded diagram of a 4MV!

Specialized Investments


Q-Jets from Brother's Automotive

Edelbrock's Q-Jets

The Carburetor Works

In future, links to buisinesses and links to carb pix will be on pages separate from this one.
In the meantime, Karl wants your carb pix or links to ~cool~ carb sites.

Karl welcomes questions, comments, criticism, rebuttals, potential sponsors, and even thanks!
Email Karl at:

Karl provides this website as a public service for people determined to keep
their antique cars running! Lastly, and definitely subordinate to the contests and spirit of this website; here are Karl-links. Karl

Planet Karl