[Fot] SU carb smooth bore or leave rough?

[DAVE HOGYE]

I know that Huffaker does this.  I believe they also remove the damper oil and or the damper completely and shave down the throttle shaft to almost nothing.  So, I don't think you'd be trashing them, but I don't know what the dyno results are either. As far as I know, they also replace head gaskets and engines quite regularly on their BMC builds.  
Dave H. 


On 11/24/2020 12:41 PM Mike Harmuth via Fot <fot at autox.team.net> wrote:

>      
>      
>     I was going over my race carbs (SU H4)and wondered if there's anything to be gained  (or lost) by smoothing out the casting (before the jet)? I'm not sure if it's designed (or left) that way to promote turbulence and better mixing as the air flows over the jet or if polishing it down would help.
>      
>     I'd hate to trash a pair of good carbs before I get some answers.
>      
>     thanks
>     mike h
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