Cliff's Quadrajet Parts and Rebuild Kits
Quadrajet Problem Solving => Dialing in your rebuilt Quadrajet carburetor => Topic started by: my71olds on April 16, 2013, 09:49:42 AM
-
Is it better to have a climatic or electric choke?
Thanks
-
im guessing you are calling a climatic choke what i call hot air. the electric (imo) is by far superior to the other and when set up right work perfect.
-
im guessing you are calling a climatic choke what i call hot air. the electric (imo) is by far superior to the other and when set up right work perfect.
I believe the "climatic" choke was common in the Carter carbs.
-
Qjets will typically be "divorced" choke (choke on the intake), "hot air" choke (side mounted with heat tubes to the intake), or electric (side mounted with a 12v wire going to them).
I use and prefer electric chokes, as they allow the use of spacers, thicker gaskets, aftermarket intakes, blocked or filled heat crossovers, etc, and you still have choke function.
Hot air chokes can also develope leaks in the system, which put tons of unfiltered air thru your engine that can wear it out quickly......FWIW.....Cliff
-
Could someone post a picture of the vacuum passage in the carburetor that sucks air through the hot air choke?
I'm leaving the choke off on the rebuild of my 17080202 carb. For some reason I can't find any channel that leads to the housing from the baseplate/main body.
Am I confusing something?
-
The vacuum supply is inside the "boss" on the lower right corner where it meets the housing.
Any particular reason for leaving off the choke? You must block the hole going into the main casting as well, or tons of dust and dirt will get sucked thru the engine......Cliff
-
The car will be used in the summers only, so I decided to leave it off.
I looked at the carb closely today and tried to drift the holes with a steel wire to see if there were passages leading down to the baseplate. But I couldn't find any. Are there any if it came with electric choke from the factory?
Is this the boss you're refering to Cliff?
(http://img.photobucket.com/albums/v335/kjholde/DSCF4303_2_zpsaadbf17e.jpg) (http://smg.photobucket.com/user/kjholde/media/DSCF4303_2_zpsaadbf17e.jpg.html)
Here's the choke housing:
(http://img.photobucket.com/albums/v335/kjholde/DSCF4308_zps3537cfbb.jpg) (http://smg.photobucket.com/user/kjholde/media/DSCF4308_zps3537cfbb.jpg.html)
-
yup. you need to seal that hole and the one just above and to the left, where the choke shaft would go.
-
The car will be used in the summers only, so I decided to leave it off.
I looked at the carb closely today and tried to drift the holes with a steel wire to see if there were passages leading down to the baseplate. But I couldn't find any. Are there any if it came with electric choke from the factory?
Is this the boss you're refering to Cliff?
(http://img.photobucket.com/albums/v335/kjholde/DSCF4303_2_zpsaadbf17e.jpg) (http://smg.photobucket.com/user/kjholde/media/DSCF4303_2_zpsaadbf17e.jpg.html)
Here's the choke housing:
(http://img.photobucket.com/albums/v335/kjholde/DSCF4308_zps3537cfbb.jpg) (http://smg.photobucket.com/user/kjholde/media/DSCF4308_zps3537cfbb.jpg.html)
Yes, what Cliff said. :)
-
Alllright, thanks guys! Can't wait to try the carb on my 454 :)
-
There are really no negatives from using a choke, even for summer only operation. It provides fast idle, which keeps the driver from having to stay on the throttle till the intake warms up enough so that the engine will idle on it's own.
You'll really LOVE the choke the first time you need to move the car in cool/cold weather, and not having one makes start-ups in sub-zero weather nearly impossible......Cliff
-
Hello everyone!! new to the forum!! I have a Q-jet 7042210 with the divorced choke, would the electric be better than the choke thermostat on the intake?
-
I prefer electric chokes to hot air or divorced, but I believe you'll need a different carb if you wanna go electric. There are some 4MC carbs that can be converted to 4ME, but I don't think you can do that with a 4MV like you have.
-
Hello everyone!! new to the forum!! I have a Q-jet 7042210 with the divorced choke, would the electric be better than the choke thermostat on the intake?
If you are trying to keep the engine stock, the divorced choke is what I would stay with. E/C is better in most cases. Don't know if your carb has the "boss" on it for an E/C though. Please post a photo.