FE Power Forums

FE Power Forums => FE Technical Forum => Topic started by: cleandan on February 07, 2025, 08:48:34 AM

Title: Seeking advice for a higher performance rebuild/modification Autolite 4100.
Post by: cleandan on February 07, 2025, 08:48:34 AM

Hey all, I have a couple Autolite 4100's (1.12) that have some corrosion issues in the venturies and butterfly seat areas....unfortunate, but what can I do now?

I am wondering if there are published methods, or other ways to take care of these issues while also increasing the CFM and performance capability of the carb?

For instance, can I do some type of bore clean up, sleeving, or other things to end with a good carb and increased CFM?
I'm thinking if I can attain 600-750 cfm in a carb that is tuned and runs right I would be good to go.

Basically I'm trying to find a way to repair the damaged carb while at the same time making it better for the engine being built.

What do you think?

Title: Re: Seeking advice for a higher performance rebuild/modification Autolite 4100.
Post by: e philpott on February 07, 2025, 09:10:52 AM

the restriction in that carb is the booster flat dab blocking the air path . Mr.BP has said on here before that the trick is to raise the Booster with multiple (3,4 or5?) gaskets and then do whatever it takes to get the AF ratio back