throttle plates drilled holes ?
#1983990
01/05/16 05:28 AM
01/05/16 05:28 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
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Circle Track
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Circle Track
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Lincoln Nebraska
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Carter BBD 8146S 2bbl. bought it from someone (maybe on here/dont remember) & finally got it soaked & just about ready to go together & noticed a hole in each throttle plate, [ Moparts Family Site - Keep it Friendly ] I thought that was a wild cam mod & only valid in some cases. they are .106" and appear to be drilled in the same exact spot in each plate (OE as opposed to hand drilled??) Your thoughts please. this is going on a DD /6 & if I need to solder em up now is the time. 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: throttle plates drilled holes ?
[Re: TJP]
#1984135
01/05/16 01:54 PM
01/05/16 01:54 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
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Tim yeah I guess I could toss the carb on with no sealer on the base gasket then pull it & cement it after deciding if it needs soldering or not (if it runs OK) but it would be easier to get it right ahead of time. Something about the precision of the holes my gut is telling me that it is factory. Ahy, agreed I had never seen that before & just happened to look down into the box of cleaned parts on the kitchen floor on a midnite trip to the frig a day ago (& it is a OE cam DD) & thought WTH. I will Google the number & see if the year/app tells me anything & if no go Scott Harms WILL know! thanks guys!
live every 24 hour block of time like it's your last day on earth
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Re: throttle plates drilled holes ?
[Re: RapidRobert]
#1984192
01/05/16 03:28 PM
01/05/16 03:28 PM
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Joined: Jan 2003
Posts: 25,995 Rio Linda, CA
John_Kunkel
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Rio Linda, CA
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I'd run the carb before making any changes.
The INTERNET, the MISinformation superhighway
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Re: throttle plates drilled holes ?
[Re: John_Kunkel]
#1984202
01/05/16 03:35 PM
01/05/16 03:35 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
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I'd run the carb before making any changes.
Ding ding ding I do believe we have a winna (& I was all set to solder em as I just want it to run so I can move (drive) it around the garages here). then I will know if the (OE) setup worked well or not) which is good to know
live every 24 hour block of time like it's your last day on earth
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Re: throttle plates drilled holes ?
[Re: RapidRobert]
#1984249
01/05/16 04:35 PM
01/05/16 04:35 PM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
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Utah and Alaska
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That carb is from a 78 pickup 318, I had several. The holes are common. Jeep CJ's used the same carb and they have the holes too. Tim
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: throttle plates drilled holes ?
[Re: astjp2]
#1984277
01/05/16 05:19 PM
01/05/16 05:19 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
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Alright, it is going back together as is
live every 24 hour block of time like it's your last day on earth
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Re: throttle plates drilled holes ?
[Re: dsp]
#1984319
01/05/16 06:02 PM
01/05/16 06:02 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
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I installed one on my 67 318 and was unable to reduce the idle speed below about 700 RPM due to those very holes. & I just had my mind made up! (to leave em be)
live every 24 hour block of time like it's your last day on earth
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Re: throttle plates drilled holes ?
[Re: RapidRobert]
#1984457
01/05/16 09:19 PM
01/05/16 09:19 PM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
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Utah and Alaska
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Part of the reason for the holes is because of how Carter did the holes for the idle mixture and transition, I had a 318 idleing at 550 rpms with this exact same carb. Plan on a rebuild every year, they don't like any junk to build up in them. I still have 1 similar on the shelf if I ever need it for a jeep project. Tim
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: throttle plates drilled holes ?
[Re: RapidRobert]
#1984740
01/06/16 04:29 AM
01/06/16 04:29 AM
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Joined: Jan 2003
Posts: 20,216 Park Forest, IL
slantzilla
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BBD carbs wear out the throttle shaft bores in the baseplate too. That leads to idle issues too.
"Everybody funny, now you funny too."
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