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Electric Choke Conversion

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Old Jun 3, 2014 | 08:04 AM
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Default Electric Choke Conversion

I have an early style Qjet with a divorced choke. Does anyone have experience with the electric choke conversion kits designed for carbs that don't have the mounting studs that the later style carbs have? Ebay lists them for about $50.
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Old Jun 3, 2014 | 02:22 PM
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can you provide a link, havent seen those kits.
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Old Jun 3, 2014 | 04:12 PM
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try this, I hope it links.
http://www.ebay.com/itm/Carburetor-Electric-Choke-Conversion-Small-Block-Chevy-Rochester-Quadrajet-/330920541051?pt=Motors_Car_Truck_Parts_Accessories&hash=item4d0c66bb7b&vxp=mtr
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Old Jun 3, 2014 | 05:11 PM
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The factory did it for 80 and 81. Not sure if it was on a 79. I don't know how extensive the wiring is for it but it works well.
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Old Jun 3, 2014 | 05:24 PM
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I have one of those. It mounts just like the divorced choke.

The two wires, one goes to a 12v source (I used the yellow wire to the wiper), and the other wire goes to a sensor that gets bolted to one of the intake bolts. It works fine. I needed it because I blocked off the crossover port after I painted the intake.
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Old Jun 3, 2014 | 07:37 PM
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I bought one from Cliff Ruggles (Cliff's high performance) for $45.00 a few years ago.
Mike
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Old Jun 3, 2014 | 08:04 PM
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Thanks for the replies.
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Old Jun 4, 2014 | 12:37 AM
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Cool. I didnt know those are available. I have a couple of divorced choke carbs that could use that on the later '70s alum intakes.

Anyone get them to work? How do they function for a daily driver?

cardo0
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Old Jun 4, 2014 | 07:43 PM
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I installed one on a 1974. The problem that I experienced was the rod from the choke to the carb sucked. It was not right in regards to having too much play in it due to it goes out to far and the rod can flex downwards ...thus making the choke plate adjustment not be right. I re-engineered the rod with a provision coming off the carb linkage area so the new rod I made works perfectly and there is NO play in the rod because my provision moved the attachment point outwards and in line with the backside of the choke housing.

DUB
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Old Jun 4, 2014 | 08:40 PM
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Thx for the reply DUB. That is some hard earned information and valuable to those needing an electric choke.

Theres always alot of fixes for problems but many never seem to workout.
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Old Jun 4, 2014 | 08:45 PM
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Originally Posted by DUB
I installed one on a 1974. The problem that I experienced was the rod from the choke to the carb sucked. It was not right in regards to having too much play in it due to it goes out to far and the rod can flex downwards ...thus making the choke plate adjustment not be right. I re-engineered the rod with a provision coming off the carb linkage area so the new rod I made works perfectly and there is NO play in the rod because my provision moved the attachment point outwards and in line with the backside of the choke housing.

DUB
DUB,

A photo is worth a thousand words..........

It would be most instructive to see what you have done. I'm sure that many of us would like to do away with the factory set-up, especially if a different inlet manifold has been fitted.

Regards from Down Under.

aussiejohn
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Old Jun 4, 2014 | 11:41 PM
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Default Photo worth a thousand words ...

This is exactly what DUB was referring to.

This is where I got it.

http://quadrajetparts.com/rochester-...400-p-399.html
Attached Images   
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Old Jun 5, 2014 | 11:52 AM
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Originally Posted by cardo0
Cool. I didnt know those are available. I have a couple of divorced choke carbs that could use that on the later '70s alum intakes.

Anyone get them to work? How do they function for a daily driver?

cardo0
These electric chokes are designed to mount to the intake the same as a divorced choke, so if your later 70's intakes do not have the mounting for a divorced choke, these will not work.
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Old Jun 5, 2014 | 03:09 PM
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Thx, thats an important fact. Then it wont work with the later alum intakes.
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Old Jun 5, 2014 | 06:06 PM
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Originally Posted by 1974CorvetteJimCr
This is exactly what DUB was referring to.

This is where I got it.

http://quadrajetparts.com/rochester-...400-p-399.html
Thanks Jim!

This is what I did on Jim's Corvette. You can see the stainless steel hex provision that I secured to the area where the factory linkage went. I made it SOLID and it move closer to the backside of the electric choke mounting/housing...so the linkage can be made to be tight with very little to NO flex in the linkage due to being so tight in regards to motion. TIGHT does not mean "binding" tight...but in regards to tolerances.

Then I disassembled the choke completely so I could make and install a new linkage arm....I secured it just like the manufacturer did with the push on retainer.....and then after some serious tweaking......I got the choke to be set correctly. The new stainless steel linkage I made will pull the choke open and close due to it does NOT bind in the provision I secured to the carb choke linkage arm.

What you see in these photo's equates to about a solid 8 hour day trying to figure out what needed to be done and make the stuff to make it work...several different ideas came across my mind and I finally came up with this due to numerous failed attempts to achieve a perfect linkage operation....but when it was all said and done...it was worth it. Jim now has a perfect electric choke. When the choke closes...it stops on the cut-out on the backside of the choke housing...so...the linkage arm was bent so perfectly set the choke and apply the tension needed to make it work. 2-3 minutes after the engine is cranked and running...the choke goes fully open as designed.

Also I wired it up like a 1981 Corvette where Jim has a choke light and a relay just like what GM did. This way if Jim has a problem with the choke...the light will tell him.

And if you look really close at the linkage arm I made...I applied a small amount of silver solder to it and filed and polished it to get it to make sure the linkage arm would stay away from the backside of the choke housing and slide freely. Without this small amount of silver solder...the linkage arm could move away from the extension provision I installed and bind up in my stainless steel extension provision.

This was installed on an Edelbrock Performer intake.

DUB

Last edited by DUB; Jun 5, 2014 at 06:12 PM.
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Old Jun 9, 2014 | 12:52 AM
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Edelbrock products:

Performer Intake Manifold for Chevy, Part No. 3701 (With EGR opening).
EGR adapter to adapt clamp-on EGR valve, Part No. 8035.
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