1942 Allis Chalmers C Carb rebuild question!!

Keith Wayne · Aug 15, 2020

I have a problem I'm hoping someone here may be able to help me with. I am rebuilding the Zenith carb on my 1942 AC C and as I was beginning removal of the tiny brass jet, the screwdriver slipped and really did a number on the soft brass slot. Now I am at a crossroad and do not know how to get the jet out correctly without damaging anything else. Without a usable slot to remove it I am stuck (and so is it). Anyone with experience know how to get this little sucker out now?? Thanks for any tips, tricks or advice.

old · Aug 15, 2020

I've rebuilt hundreds of carbs and I never remove the jets due to the problem you have. I just soak the carbs over night in a good carb cleaner then spray out with carb cleaner spray and then blow out with air and then poke out the passage ways with a small wire or as I use a torch tip cleaner tool and repeat steps 2-4 2 or 3 times

krumenacker · Aug 15, 2020

You often only have one shot at them.

First, clean really well. A couple days in the parts washer. Boil in water and dish soap for an afternoon or two. Then a day or two in the carb cleaner paint can from NAPA, followed by spraying all passages with can of carb cleaner.

Wrap in a towel and put in a vise. Match the screwdriver perfectly, grind the head or buy one if you need to. Lined up perfectly, seat the screwdriver by tapping sharply with a mallet. Carefully give it a try.

If you can't get it out, assuming you cleaned it as described, use a spray can of carb cleaner and straw to blow out the jet.

That soft brass can be damaged by poking stuff in there.

old · Aug 15, 2020

I've rebuilt hundreds of carbs and have yet to damage any of the jets by poking them out. If you cannot remove them which most of the time you can't you have to use some wire or a drill bit or a torch tip cleaner tool to poke out the dirt/rust or the job is not done

krumenacker · Aug 18, 2020

(quoted from post at 15:22:39 08/15/20) I've rebuilt hundreds of carbs and have yet to damage any of the jets by poking them out. If you cannot remove them which most of the time you can't you have to use some wire or a drill bit or a torch tip cleaner tool to poke out the dirt/rust or the job is not done

You are quite the master. You are unable to clean and remove the jets properly. You are able to clean them with drill bits and not damage them.

old · Aug 18, 2020

I don't use drill bits I use a torch tip cleaning tool which is a whole lot different then a drill bit

krumenacker · Aug 25, 2020

(quoted from post at 15:22:39 08/15/20) I've rebuilt hundreds of carbs and have yet to damage any of the jets by poking them out. If you cannot remove them which most of the time you can't you have to use some wire or a

drill bit

Click to expand...

or a torch tip cleaner tool to poke out the dirt/rust or the job is not done

1942 Allis Chalmers C Carb rebuild question!!

Keith Wayne

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old

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krumenacker

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old

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krumenacker

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old

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