Divorced Choke with Headers - Team Camaro Tech
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post #1 of 11 (permalink) Old Jul 4th, 14, 11:10 PM Thread Starter
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Tim
 
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Divorced Choke with Headers

When running headers instead of manifolds, will a divorced choke still function, but just take longer to activate without the manifold heat riser system?

1969 04A Van Nuys-built Z/28. Cortez Silver with dark blue interior and VE3. Sold Clippinger Chevrolet. Raced at Lions in LA.
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post #2 of 11 (permalink) Old Jul 4th, 14, 11:16 PM
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George
 
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Re: Divorced Choke with Headers

What engine
unless you get snow, you really don't need a choke here down under
You can weld a pipe to your headers to connect it to.

482 New ZL1 Block
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post #3 of 11 (permalink) Old Jul 5th, 14, 12:04 AM Thread Starter
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Tim
 
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Re: Divorced Choke with Headers

Quote:
Originally Posted by 482 ZL1 View Post
What engine
unless you get snow, you really don't need a choke here down under
You can weld a pipe to your headers to connect it to.
I get snow had a -6c yesterday.
Just curious, to my mind the bi-metal choke coil would work ok, but just take longer than a stock system. Currently missing choke mechanism from intake manifold, didn't want to waste time buying stock style if no good with headers.

1969 04A Van Nuys-built Z/28. Cortez Silver with dark blue interior and VE3. Sold Clippinger Chevrolet. Raced at Lions in LA.
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post #4 of 11 (permalink) Old Jul 5th, 14, 08:06 AM
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Re: Divorced Choke with Headers

The divorced choke will work fine without an exhaust heat riser, just let the engine warm up a bit before driving off.

...Dennis

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post #5 of 11 (permalink) Old Jul 5th, 14, 08:31 AM
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Re: Divorced Choke with Headers

It won't work with a crap if you didn't install the correct intake gasket. I quit using my divorced choke cause I don't want my cyl walls washed with extra fuel and I live in the Great White North. Chokes were made for women drivers who don't want to fiddle with the accelerator pedal and then wonder why the car is stalling.

Mark 70 Z28 M22 3.73 Z21 Z87 - Lunati 20120121 Roller Cam

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post #6 of 11 (permalink) Old Jul 5th, 14, 08:58 AM
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Re: Divorced Choke with Headers

Quote:
Originally Posted by COPO View Post
Chokes were made for women drivers who don't want to fiddle with the accelerator pedal and then wonder why the car is stalling.
Or for those of us who have other things to do while the car warms up.

67 Black RS Coupe, 383, M21 & 10 Bolt Posi. Edelbrock E-Tech 170 Heads, 2204 Roller Cam, Air Gap Intake.
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post #7 of 11 (permalink) Old Jul 5th, 14, 07:17 PM Thread Starter
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Tim
 
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Re: Divorced Choke with Headers

Quote:
Originally Posted by DjD View Post
The divorced choke will work fine without an exhaust heat riser, just let the engine warm up a bit before driving off.
Thanks Dennis
Quote:
Originally Posted by COPO View Post
It won't work with a crap if you didn't install the correct intake gasket.
Really? What is the correct type of gasket?

1969 04A Van Nuys-built Z/28. Cortez Silver with dark blue interior and VE3. Sold Clippinger Chevrolet. Raced at Lions in LA.
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post #8 of 11 (permalink) Old Jul 5th, 14, 07:33 PM
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Re: Divorced Choke with Headers

My divorced choke works with headers, but I am running a first gen aluminum Z/28 manifold and I am guessing it heats faster than the cast iron ones do.
It is adjustable. You can just back it off a bit so it doesn't stay on quite so long.

Lynn
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post #9 of 11 (permalink) Old Jul 5th, 14, 08:04 PM Thread Starter
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Tim
 
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Re: Divorced Choke with Headers

Thanks Lynn, I have the 472 alum intake too, glad to know your choke system works.

1969 04A Van Nuys-built Z/28. Cortez Silver with dark blue interior and VE3. Sold Clippinger Chevrolet. Raced at Lions in LA.
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post #10 of 11 (permalink) Old Jul 5th, 14, 08:22 PM
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Re: Divorced Choke with Headers

Believe the stove on the manifold was part of the Therm AC system. All moot unless using an air cleaner with the valve that is set up for it.

By correct gasket assume he meant for under a q-jet or 2 jet that ran exhaust through the intake under the carb to heat things up faster.

Not sure what you're building

Divorced chokes seem a much better idea than elec to me - eleec puts you back at fast idle on a fully warmed engine....


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post #11 of 11 (permalink) Old Jul 5th, 14, 08:41 PM Thread Starter
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Tim
 
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Re: Divorced Choke with Headers

Quote:
Originally Posted by BPOS View Post
Not sure what you're building.
Thanks Al, this is for a 306 (30-over 302); only reason I didn't say that in original question because all 67-69 carbs (except on the ZL-1) had a thermostatic choke.

1969 04A Van Nuys-built Z/28. Cortez Silver with dark blue interior and VE3. Sold Clippinger Chevrolet. Raced at Lions in LA.
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