rebushing throttle bores, what to use
#987347
05/06/11 10:11 PM
05/06/11 10:11 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Circle Track
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OP
Circle Track
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Posts: 36,040
Lincoln Nebraska
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Planned on drilling out the baseplate bores/pressing in a bushing/ream bushing ID to fit shaft. Sound good? What would you suggest I use/any tips/anything I am missing. Thank you for your time.
live every 24 hour block of time like it's your last day on earth
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Re: rebushing throttle bores, what to use
[Re: jjl]
#987349
05/06/11 10:42 PM
05/06/11 10:42 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Lincoln Nebraska
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Can I buy guide liners commercially esp as I have some valve guides to do also. Mc Masters or goodson or??
live every 24 hour block of time like it's your last day on earth
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Re: rebushing throttle bores, what to use
[Re: RapidRobert]
#987350
05/06/11 11:14 PM
05/06/11 11:14 PM
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Joined: Jan 2003
Posts: 16,820 Between Houston & Galveston TX
SattyNoCar
Smarter than no class Flappergass by a mile
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Smarter than no class Flappergass by a mile
Joined: Jan 2003
Posts: 16,820
Between Houston & Galveston TX
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Being the cheapskate I am, I just used brass tubing from the local hobby shop. I forget the size, but, I took a bare shaft with me to find the size. Mine was worn enough that I didn't need to drill the base plate. I cut the tubing a little long, and carefully tapped it in with a small hammer and a piece of wood. I cleaned up the (inside) edge with a small rat tail file. Once the 'bushing' was in, I set the base plate on its side and put a few drops of loctite red around the bushing. Its held up just fine in a real everyday driver situation and did away with that annoying whistle.
John
The dream is dead, long live the dream.......😥
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Re: rebushing throttle bores, what to use
[Re: SattyNoCar]
#987351
05/06/11 11:17 PM
05/06/11 11:17 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Lincoln Nebraska
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I'll prob freeze the bushing/slightly heat the baseplate. I'm worrying if the shaft will b worn unevenly & need attention
live every 24 hour block of time like it's your last day on earth
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Re: rebushing throttle bores, what to use
[Re: dOrk !]
#987353
05/07/11 12:44 AM
05/07/11 12:44 AM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Circle Track
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Lincoln Nebraska
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Not sure bro but I want to do em (dual AFB's going on a 451) to b proactive & I want to spend some money plus they're 40 + years old
live every 24 hour block of time like it's your last day on earth
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Re: rebushing throttle bores, what to use
[Re: RapidRobert]
#987354
05/07/11 12:49 AM
05/07/11 12:49 AM
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Joined: Jul 2008
Posts: 30,427 Florida STAYcation
dOrk !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,427
Florida STAYcation
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I have never REbushed a base plate ever. Never ran into a carb that I was going to do or use that needed it...... B U T ... I have heard of some that were soooo bad that they caused severe vacuum leaks ...and actually were ... Your point about getting them in STRAIGHT and TRUE should be a concern. I would say take them to a small machine shop locally.
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Re: rebushing throttle bores, what to use
[Re: RapidRobert]
#987356
05/07/11 06:35 PM
05/07/11 06:35 PM
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Joined: Jan 2003
Posts: 25,802 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,802
Rio Linda, CA
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Reaming the baseplate oversize for bushings requires a reamer with a pilot that's long enough to extend all the way through the baseplate before the flutes make contact. This is the only way to prevent crooked throttle shaft bores.
The INTERNET, the MISinformation superhighway
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Re: rebushing throttle bores, what to use
[Re: John_Kunkel]
#987357
05/07/11 08:58 PM
05/07/11 08:58 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Lincoln Nebraska
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Thank you John & a guy has the right stuff & wants 25 a carb so I might just let him go ahead
live every 24 hour block of time like it's your last day on earth
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Re: rebushing throttle bores, what to use
[Re: ScottSmith_Harms]
#987361
05/07/11 09:54 PM
05/07/11 09:54 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Lincoln Nebraska
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I have 2 identical 4131S AFB's & for sure dont want to mess one up
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