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Good day to all, I have a 66 trac pac, does anyone know if this should have a choke on the center carb ? My car has the choke flap, but is in the locked position & NO choke spring or rod... Maybe this is correct, if not, I will need to hunt down a choke spring & rod . Thanks in advance, Joe will probably know this I bet.
Last edited by zl1 camaro; October 24th, 2023 at 10:43 AM.
It's not a hard question, most of us know the answer. The L69 tri carb setup was sold for street use, meaning that it had a choke on the center carb. The "track pack" (an unofficial term meaning the aftermarket retrofit of the shroud system) did not change that. Did the 66 W-30s (the 54 drag racing cars with the high rears) have chokes? That's a different question.
It's not a hard question, most of us know the answer. The L69 tri carb setup was sold for street use, meaning that it had a choke on the center carb. The "track pack" (an unofficial term meaning the aftermarket retrofit of the shroud system) did not change that. Did the 66 W-30s (the 54 drag racing cars with the high rears) have chokes? That's a different question.
Thanks much. now I have to find some parts I guess. Not a hard question to you maybe. lol
Last edited by zl1 camaro; October 24th, 2023 at 05:56 AM.
Divorced choke means "bimetallic coil in the intake manifold and rod going up to carb" as in it is separate, ie, divorced, from the carb. This is as opposed to onboard bimetallic coil on the carb, and, later, opposed to the retrofit electric choke in the same housing on the carb.
Divorced choke means "bimetallic coil in the intake manifold and rod going up to carb" as in it is separate, ie, divorced, from the carb. This is as opposed to onboard bimetallic coil on the carb, and, later, opposed to the retrofit electric choke in the same housing on the carb.
I never heard of that saying for this type of application. But yes I know some carbs come with the spring on the carb & some on the manifold.. thanks for explaining that..
Divorced choke means "bimetallic coil in the intake manifold and rod going up to carb" as in it is separate, ie, divorced, from the carb. This is as opposed to onboard bimetallic coil on the carb, and, later, opposed to the retrofit electric choke in the same housing on the carb.
I never heard of that saying for this type of application. But yes I know some carbs come with the spring on the carb & some on the manifold.. thanks for explaining that..
If you want some crazy stuff, look at how Ford did them with the hot air tube down to the exhaust manifold.
Divorced choke, (not attached to the carb like my ex-wife).
It sits in a pocket in the intake above the exhaust gas crossover where it draws the heat to activate the bi-metal spring, pulling down to open the choke with heat.
Electric choke (integral/attached) The bi-metal spring is electrified to heat up. See the 12vdc tab for a female stake-on wire connector.
Hot air choke (integral/attached). The tube picks up heated air from a pocket in the intake (exhaust crossover) and feeds it into the bi-metal spring. Not the pic I wanted couldn't find a better one quickly, but you get it.
This pocket circled in red is where the divorced choke fits.
Divorced choke, (not attached to the carb like my ex-wife).
It sits in a pocket in the intake above the exhaust gas crossover where it draws the heat to activate the bi-metal spring, pulling down to open the choke with heat.
Electric choke (integral/attached) The bi-metal spring is electrified to heat up. See the 12vdc tab for a female stake-on wire connector.
Hot air choke (integral/attached). The tube picks up heated air from a pocket in the intake (exhaust crossover) and feeds it into the bi-metal spring. Not the pic I wanted couldn't find a better one quickly, but you get it.
This pocket circled in red is where the divorced choke fits.
Hey thanks a bunch for all the info, all you guys are great.. The divorce statement is what [off set me...]
Exactly how the factory hot air choke was plumbed on my 62 F85.
I understand the engineering point, the exhaust manifold will get warmer, sooner, move some air up there and get the choke moving, but I think it's a lot of materials, and,
it's not really indicative of the condition of the carb and intake.
October 24th, 2023, 04:28 AM
