tcarroll

I need a secondary choke pull off for a 1971 - 4 barrel rochester
carburetor number 7041250
I also need the idle kick solenoid because it has A/C,
the intake is also a 1971 I think.
It is either 1971 or 72 intake not sure if that makes a difference for mounting. Any help is appreciated.

Contact Todd at toddvcarroll@hotmail.com or 915-345-5298

I have some 1968 Cutlass parts and 1972 Monte Carlo parts for sale or trade as well.

ROCKETMAN269V

Unless I'm mistaken, a '71 didn't have a secondary choke pull-off.

tcarroll

well the carb number says it is a 1971 and it has a pull off going to the secondary butterfly.

ROCKETMAN269V

OK, I understand what you're saying. The choke pull-off that you're talking about controls the choke as well as the opening of the secodary air valve, on top of the rear barrels. Some later carburetors have an additional pull-off mounted on the rear of the carburetor. This is referred to as the secondary choke pull-off.
As far as what you are looking for, I have an NOS Standard-Hygrade one in the original box. You can e-mail me for pics, etc.: drolds1@bellsouth.net.

Fun71

Secondary vacuum break

http://quadrajetparts.com/rochester-...iac-p-216.html

BILL DEMMER

that is the PRIMARY vacuum break, there is no secondary vacuum break on a 7041250.


bill

tcarroll

if it is a primary vacuum break then it should be hooked up to the primary choke plate and it does not hook up to it. It hooks up to the secondary butterfly.

ROCKETMAN269V

Rather than arguing about terminology, why don't you just take this as a learning experience from some people that have been dealing with this for a long time. We're not trying to make you look stupid; but, rather teaching you the correct names of parts. I know Bill Demmer is very well versed in these things and I too have been building Q-jets for over 30 years. The part that you seek is technically called a "primary vacuum break"; though, through the years, it has been referred to as a "choke pull-off". The part that FUN71 linked to is the correct one for your application. You will note that they call it the "primary" or "forward" vacuum break "Also known as a choke pull-off".

Fun71

Oops. I was thinking "vacuum break that controls secondary air door operation".
The link even says "Primary vacuum break" and "choke pull off".
Thanks for the clarification.

MDchanic

This "argument" is now going on on two threads simultaneously.

I place "argument" in quotes because you can't argue over obvious facts, such as whether the sky is blue, or gravity makes things fall.

This carburetor has one vacuum diaphragm located on the right front.
This diaphragm is called the "vacuum break diaphragm" in the Chassis Service Manual.
This diaphragm serves to break the choke plate when the engine starts, to prevent the secondary air valve from opening when the vacuum is too high, and to damp the opening of the secondary air valve when it does open.

If you can't see how the vacuum break diaphragm influences the choke butterfly, then you need to look closer. If you still can't see it, then someone else here who has this same carburetor may be nice enough to go out to his car and take a picture of the exact point of interaction.

- Eric

tcarroll

First of all I think we should get one thing clear here. I am not arguing with anyone. I thought this was a discussion. This will be my last response to this thread from me. I have emailed Rocketman regarding selling me the vacuum break I need twice now and have not got a response. If anyone has a working vacuum break or what ever the hell you feel like calling it please email me at toddvcarroll@hotmail.com. Thank you for everyones imput and time........Todd

ROCKETMAN269V

Todd, I have received NO e-mails from you. Did you copy and paste my e-mail or type it in? Some people have put an "I" instead of a "1" after "drolds", which won't get you to me. Give it another try. Thanks, Bob.

tcarroll

I copied and pasted but this time I clicked on your email address and emailed directly from there. Hope you get it . thanks ..Todd