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12-06-2015, 07:02 PM
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#1 |
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Senior Member
  
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,385
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Vacuum Reservoirs - much go wrong with these, test methods?
Just polished this one up. 3M plastic cleaner and "lens" protector worked rather well, though I see by this image, I missed the arms some, especially the edges. Still not bad for being on the truck 45 years.
For 20 plus years, the ports were left open and unprotected. Not much exposure to elements. Does much go wrong with these units? Also, any recommendations how to test these and other vacuum type valves? Thank you for any response. 
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly guide (kit) for restoring this truck from the ground up, complete with details including full hardware descriptions. Much of the info. applies to all 67-72 GM. My build thread, with some info. about the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 Last edited by 71CHEVYSHORTBED402; 12-09-2015 at 01:17 AM. |
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12-06-2015, 07:45 PM
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#2 |
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Registered User
Join Date: Oct 2008
Location: Marianna Arkansas
Posts: 7,280
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Re: Vacuum Reservoirs - much go wrong with these, test methods?
Pump them up with a vacuum pump and see if it holds if it does then it is good if not it is bad.
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12-06-2015, 08:02 PM
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#3 | |
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Senior Member
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,385
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Re: Vacuum Reservoirs - much go wrong with these, test methods?
Quote:
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly guide (kit) for restoring this truck from the ground up, complete with details including full hardware descriptions. Much of the info. applies to all 67-72 GM. My build thread, with some info. about the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 Last edited by 71CHEVYSHORTBED402; 12-06-2015 at 09:07 PM. |
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12-06-2015, 09:53 PM
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#4 | |
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Registered User
Join Date: Jul 2015
Location: Central Coast, CA
Posts: 501
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Re: Vacuum Reservoirs - much go wrong with these, test methods?
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I learned the hard way and bought the plastic one first... then a few months later the metal one. Lots of uses for this tool and its fittings so you won't regret it.. (for example testing your distributor vac advance to see when it starts moving and how far and at what Hg (or is it Mg).. Inches of Mercury.. |
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12-07-2015, 12:10 AM
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#5 | |
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Senior Member
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,385
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Re: Vacuum Reservoirs - much go wrong with these, test methods?
Quote:
 Amazon.com: Mityvac MV8500 Silverline Elite...
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly guide (kit) for restoring this truck from the ground up, complete with details including full hardware descriptions. Much of the info. applies to all 67-72 GM. My build thread, with some info. about the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
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