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#1 |
BlahBlahBlah
Join Date: Feb 2002
Location: Wa.
Posts: 19,872
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Carburetor studs
When I took the two barrel carb off to have it rebuilt it was held on with with two bolts, one stud and nut (semi broken off and rusted tight) and one broken off something. I looked in the assembly and service manuals and looks like it was originally held on with stud nut combo on all four corners. Can someone tell me what thread size and length these studs are supposed to be?
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#2 |
Dave's not here, man
Join Date: Jun 2004
Location: Winder, Georgia
Posts: 2,000
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Re: Carburetor studs
I'm not certain of the size, but when I needed them for my 2bbl I got them from the help section at the local parts house.
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- 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250 |
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#3 |
It's the air up here
Join Date: Mar 2007
Location: Western Colorado
Posts: 710
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Re: Carburetor studs
Most all carb studs or bolts that I have seen have been 5/16 diam. and course thread. If studs are used then the studs are 5/16 course into the manifold and 5/16 fine to the carb side.
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1971 cheyenne k10 4 speed np 205 454 BB factory a/c ![]() Never drink down stream of the herd! Eric |
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#4 |
Dave's not here, man
Join Date: Jun 2004
Location: Winder, Georgia
Posts: 2,000
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Re: Carburetor studs
Just found the part I was talking about online. Says they are 5/16"-18. Is 18 the pitch?? Here's a link to the site:
https://www.dormanproducts.com/cgi-b...tegory_list=:0
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- 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250 |
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#5 |
Account Suspended
Join Date: Jun 2000
Location: over yonder
Posts: 14,270
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Re: Carburetor studs
18 is the pitch ... what "pitch" means is how many threads per inch ... in other words, if you measured a one inch length of the stud, and then counted the threads you would have 18 in that length.
Here's another machinist trick and a pretty cool little helpful hint ... if you ever need to know the decimal equivalent just divide 1 by the pitch. example: 1 / 16 = .0625 1 / 20 = .0500 1 / 24 = .0417 You may be asking yourself "Why the heck would I ever need to know that?" You may not, but just in case, this is the measurement from the top of one thread to the next. In other words, for a 5/16"-18 thread, it is .0625" from the crest of one thread to the crest of the next. Last edited by Shane; 06-24-2007 at 10:05 PM. |
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#6 |
Dave's not here, man
Join Date: Jun 2004
Location: Winder, Georgia
Posts: 2,000
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Re: Carburetor studs
Thanks for the info Shane! I was wondering how to figure that out.
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- 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250 |
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#7 |
BlahBlahBlah
Join Date: Feb 2002
Location: Wa.
Posts: 19,872
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Re: Carburetor studs
Amazing how much you can learn on this site...thanks
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