Re: Mystery hole in intake
[Re: jeebis44]
#2488092
04/26/18 02:36 AM
04/26/18 02:36 AM
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Joined: May 2012
Posts: 1,820 South Bend
John Brown
top fuel
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top fuel
Joined: May 2012
Posts: 1,820
South Bend
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Heat source for automatic choke. Surely some of you remember automatic chokes on cars.
July 19th should be "Drive Like Rockford Day". R.I.P. Jimmie.
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Re: Mystery hole in intake
[Re: John Brown]
#2488143
04/26/18 10:07 AM
04/26/18 10:07 AM
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Joined: May 2003
Posts: 15,487 Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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Heat source for automatic choke. Surely some of you remember automatic chokes on cars. DING DING DING yep. unhooked many of those heat tubes from carbs no need to weld it shut.
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Re: Mystery hole in intake
[Re: scratchnfotraction]
#2488183
04/26/18 11:47 AM
04/26/18 11:47 AM
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Joined: Sep 2003
Posts: 19,356 north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 19,356
north of coder
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Heat source for automatic choke. Surely some of you remember automatic chokes on cars. DING DING DING yep. unhooked many of those heat tubes from carbs no need to weld it shut. but to be on the safe side, air check it like cab said. you never know the complete history of any "old" part. if it does leak into the crossover, you can also tap that hole[or both] to a "xxx" fine thread, then use a short "button head" screw to plug it instead of welding.
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Re: Mystery hole in intake
[Re: jlatessa]
#2488196
04/26/18 12:06 PM
04/26/18 12:06 PM
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Joined: May 2003
Posts: 15,487 Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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What about the one on the bottom? Is it possibly an EGR port?
Joe NO, this is a hole on each side with a steel tube inside connecting the 2 openings. egr gasses will heat the tube and the air inside of it to heat the choke thermo spring. idea is.. as the air inside the tube heats is rises to top of tube to carb choke housing connection. cool air flowing under intake is sucked up into tube and heated. good idea to air check for leaks though. I have saw them with holes the tube from rust.
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Re: Mystery hole in intake
[Re: jlatessa]
#2488217
04/26/18 12:56 PM
04/26/18 12:56 PM
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Joined: Jan 2003
Posts: 1,255 Columbus, GA
Michael Ecks
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,255
Columbus, GA
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my LD340 has one as well. The steel tube was probably set in place in the empty mold and the aluminum poured in later casting itself around the tubing.
"The happiness of your life depends upon the quality of your thoughts" ~ Roman Emperor Marcus Aurelius
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