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#676380 09/07/2010 11:17 PM
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Wrench Fetcher
Wrench Fetcher
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Can I make the vac. advance line out of brake line ? Are the brakeline fittings the right threads? Thanks

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D
'Bolter
'Bolter
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Yep on the 3/16" steel brake line and yep at one end, the end that goes into the stock carb base is a compression fitting.
Denny Graham
Sandwich, IL


Denny G
Sandwich, IL
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Thought they were smaller than 3/16", or it is just because the 5/16" fuel line beside it makes the vacuum line look small?

Grigg


•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-
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Bubba - Curmudgeon
Bubba - Curmudgeon
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1/8" for the mechanical "sender" line to the oil pressure gauge. (the vacuum-advance line has a larger diameter).

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G Offline
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Could the vacuum advance line be 5/32" or is it truly 3/16" as Denny said it is?
I should go measure mine but won't be able to till Monday..
I only ask because looking at the picture in my mind I see 3/16" as being to large, and I have a fairly well calibrated eyeball...

Grigg


•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-
Joined: Feb 2004
Posts: 29,805
H
Kettle Custodian (pot stirrer)
Kettle Custodian (pot stirrer)
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Every one I can remember replacing was done by using regular 3/16" steel brake line. There's an oddball fitting on one end of some of them, the one-time use compression fitting with the tapered end that grips the steel line. Ford used a similar fitting on the ends of 1/4" fuel lines, IIRC.
Jerry




"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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-Tom

1950 Chevy 3100 w/ 1956 235
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Wrench Fetcher
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This is Elmer here; I bought the fittings that would go on the 3/16 brake line. The one that goes on the vac. advance fits right but the one that goes on the carb does not seem right, and I Don't want to force it to mayby strip the threads. They look right but if someone said they used the fitting from the brake line there I would try it. What do you think?? Thanks

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Measured several at a truck show this weekend, 3/16" it is.
Sorry for the confusion and not being trusting.

Grigg

Joined: Mar 2008
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B
'Bolter
'Bolter
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The end at the carb has a compression fitting (as Hotrod Lincoln stated above) on mine (Carter W1 carb). You can buy one at NAPA.

Last edited by Big Tee; 09/13/2010 1:28 PM.

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1946 Chevrolet 1/2-ton
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Wrench Fetcher
Wrench Fetcher
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Posts: 91
Yeh; The compression fitting on the carb end makes sense now. Thanks for all the good feedback, I don't know what I would do without you guys. I'm sure I'll be calling on you again in the future so thanks again.


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