Re: {Chrysler 300} electric choke on rams

While I don't usually have much trouble with setting the original choke assembly for proper cold closure and fast idle adjustment, I am suspicious that the pull off piston no longer seals in its bore/cylinder as it did when new, so I don't get enough pull-off action upon start up, almost as if the vacuum pulling on the piston isn't strong enough to overcome the force of the thermostatic spring. Could I potentially use this electric conversion kit to just replace the pull off piston assembly/action and not the electric spring/cap/wiring and still use the original choke system but maybe get a better choke pull off action?

On Tue, May 2, 2023 at 5:19 PM John Grady <jkg@xxxxxxxxxxxxxxxxx> wrote:

Dyke — that was a great post .
Changing whole carb as some have done takes away a very good part of ram carb , the special idle air valve , which lets both carbs close fully —preventing possible linkage stop issues from interfering with two idle throttle stops etc on stock AFB .

I have an F I converted to manual choke like a J or max wedge , it was a bad mistake ( score a big one for the originality guys!) .

So now , seeing your post , I went right at keeping the factory carbs working as designed , like you did , — but fixing the erratic F thermal warmup choke ( why I had the manual ideas) .

But Edelbrock wants 95 for that kit . Ripoff .
So wrote to them trying to buy idle pull off piston , arm and that link with tab . Response “ only available in kit “ 2$ part if that . looked at soldering a new brass tab to old arm etc . I think it can be done .
But -

In process of doing this i find National Carbs in Jacksonville Fl on ebay They have a kit FFP-1478-ECK to do this 47.45 each . Hard to see what is in it on e bay pix , but decided to take a chance . 2 kits . Save 100 $
Came next day (!) , in this kit is a whole new die cast choke mechanism housing that attaches to carb by three screws , the 4 th hole is a vacuum passage — they arranged an o ring recess in new piece right there to seal vacuum feed .

Already in it is a new piston arm and link with a round pin sticking out to engage the heater coil that is covered in a slippery plastic . Better than carter or edelbrock . no sticking nice and smooth action . Smart .
heater Coil itself is very well
made . Impressive . new black cover too , might work modified somewhat on other heat choke designs , like air draw , / vacuum which is still functional with this electric . Not done right —you can cause a vacuum leak (I learned stuff from all this ) . Black plastic can is under full manifold vacuum , — always wondered why a gasket there . Now we know .
I have not put in the car yet , assumption being if Edelbrock fit , as you describe this does too .
Big step ahead I think , throw away exhaust heat riser valve , restriction it causes , and associated hassles like a melted ram bottom ( happened to me .. they rust stuck shut ) and both sides coming off choke at different rates . = Stalling
thank you Dyke !
john g

Sent from my iPhone

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