holley throttle shaft

[jcelk]

i got my holley 4160 on the bench it;s got .010 of wobble in the secondary shaft the bore seams tight i stuck the end of a 3/8 bit in there it;s tight ...the shaft measures .360 even where it could;t have worn out what is the dia specs on the shaft ? is this just the teflon bushings gone bad ? thanks for you input

 

[spongbob]

It might not be all that bad if the car will idle low enough after adjusting idle mix screws .other wise kits used to have bushings in them caint remember what and when .. when you say warped I'm wondering if you mean 1 butterfly is closing ahead of the other one noticeably gues you mean the crank that connects to the vacuume actuator arm if somethings binding dew to shaft alignment you either straighten it or maybe get anouther part a picture is helpful

 

[jcelk]

thanks for your reply i see the confusion i said worn not warped the butterflys open and close at the same time ..i have a wobble of .010 in the secondary shaft .i put a 3/8 drill bit end in the bore it feels tight and the shaft measures .360 of an inch diameter even where there could not be any wear i have read the factory cut them a little smaller then 3/8 of an inch is this normal or doe;s this need new bushings or is the shaft worn out . thanks for your input

 

[Rt Jam]

These usually wear in a oval or slotted hole. Even if a drill bit is tight, it can still leak air.

 

[jcelk]

so it needs bushings

 

[565bbchevy]

Worst case scenario you can get a new Holley baseplate they are just under $200

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