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I am looking for a A/C Quadrajet solenoid bracket. The one I purchased from a vender is not the correct design see below pic #1 and only fits pic #2a & pic# 2b, type carbs. I have pic #3 design. I am looking for either pic #4a & 4b or pic #5 or any other design that would work to hold the solenoid in place. Any suggestions?
If you can't locate the correct bracket, it looks like you could use the [new] bracket you have (pic #1) by welding a square piece of flat stock in the top corner, then drilling for mounting to the carb's left corner bolt. There is also a hole on the front of that bracket which appears to line up with an untapped hole on the front of the carb. If that can be tapped (flat bottom tap) to install a short screw and stabilize the front face a bit, that modified bracket should do the job just fine.
That mounting hole on the front should guide you for setting the correct height and side-to-side position of that bracket,. That will give you proper placement for welding that corner plate and for drilling that mounting plate for the carb bolt.
Idle stop solenoid hole centers measure as shown. The screws used have a oval style head and measure about 5/8" total length. The shaft of the solenoid does turn so it's adjustable.
I've read two different stories. One is that this is an AC idle-up solenoid. The other is that this solenoid is used to prevent dieseling, by allowing the throttle to close more fully once its unpowered.
I've read two different stories. One is that this is an AC idle-up solenoid. The other is that this solenoid is used to prevent dieseling, by allowing the throttle to close more fully once its unpowered.
Idle stop solenoid hole centers measure as shown. The screws used have a oval style head and measure about 5/8" total length. The shaft of the solenoid does turn so it's adjustable.
Thanks Bmotojoe awesome information! I’ll call the vender and have them measure the above mention bracket/solenoid to see how close it is to your 15/16” measurement.
Rick
Last edited by RickDett; 12-05-2018 at 12:23 PM.
Reason: Reason: 15/16" not 5/16"
I've read two different stories. One is that this is an AC idle-up solenoid. The other is that this solenoid is used to prevent dieseling, by allowing the throttle to close more fully once its unpowered.
So which is it? Or both?
The purpose here is to bump up the idle when the A/C is turned on. In 1969 a 350ci with A/C it did not come with this setup, only the 427ci with A/C had this setup. Without it the idle drops considerable and the A/C is not as efficient at such a low idle.
Not sure what your current connector housing looks like. The new solenoid's 1/4" electrical spade will have a extended tang built into it. You can use either of these two connector housings to span that tang. The locking black one is correct, the white one will work but can be removed easily. White #2977514 Black #12004267.
Hope this helps
Not sure what your current connector housing looks like. The new solenoid's 1/4" electrical spade will have a extended tang built into it. You can use either of these two connector housings to span that tang. The locking black one is correct, the white one will work but can be removed easily. White #2977514 Black #12004267.
Hope this helps
I hope you told him 15/16 not 5/16?
Yes 15/16" I'll go back & edit both above posts Thanks
Update post: Here’s what I did to add a solenoid which was not an original option on a 350ci 1969 car with a/c. As mentioned earlier without the solenoid the idle drops considerable and the A/C is not as efficient at such a low idle.
I spoke to a rep from the company who sell the bracket in post # 4. It measures the same 15/16.
This was false information it measured appox. 1-1/4” but it did not matter because the bracket set the solenoid too low to reach the throttle linkage. I relocated the mounting position to make the solenoid as low as possible to not interfere with the air cleaner drop base. I drilled and tap threads into the bracket rather than using nuts on the back side (as in post # 4). I also ended up removing the unused lower portion of the bracket. I could not find flat head screws so I settle with philips screws heads.
Unmodified
Modified
This is the final setup in place.
This is the carburetor idle stop solenoid extension harness that I used.
it looks like you could use the [new] bracket you have (pic #1) by welding a square piece of flat stock in the top corner.
You can't weld zinc pot-metal die castings - Q-Jet castings, other than the throttle plate and the choke housing, are die cast zinc, and cannot be welded.
Lars
12-04-2018, 11:26 AM
A/C Quadrajet solenoid bracket
I may be close now. I'll post back.
