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#1
04-10-2023, 10:36 PM
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Cheap pump to simulate engine vacuum?
Hi all,
Anyone done the math to know what strength of a pump I would need to simulate engine vacuum? Would like to debug my hideaway headlights without running the motor (pollution and noise in a tight environment). Hoping to get something on Amazon for cheap that could either plug in or run off the battery. Thanks!
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1969 Judge, 4-speed, CR/Parchment, Quasi-Survivor, #'s match - under restoration |
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#2
04-11-2023, 01:23 AM
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I once wanted a cheap vacuum pump - can't even remember for what- but still have it. I disassembled an old tire inflating pump (12v) and plumbed a line from its intake port as a vacuum source. It works okay, but it's a tiny pump and only pulls 3 in.hg. vaccuum. Perhaps you could do the same with a larger one?
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Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) |
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#3
04-11-2023, 02:39 AM
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I have an electric Vac pump off i think a 90s or early 2000s car I used for a crank case evac pump on a turbo car it worked well. I do belive it has the cars model and. Year written on it. Next time I’m at my shop I’ll check for it and post if it does . I ended up going to a smog pump off and Isuzu pup I used as a vac pump instead to j
Keep the distick tube from blowing out. Still working great today Here it is worked well
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Happiness is just a turbocharger away! 960 HP @ 11 psi, 9.70 at 146. Iron heads, iron stock 2 bolt block , stock crank, 9 years haven't even changed a spark plug! selling turbos and turbo related parts since 2005! Last edited by turbo69bird; 04-11-2023 at 02:45 AM. |
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#4
04-11-2023, 03:04 AM
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I bought this one off Amazon and put it in a little case with a vacuum gauge and terminals to hook it up to 12 volt.
It's slow, but works great, I've used it to diagnose the headlights, HVAC system and distributor advance. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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I'm World's Best Hyperbolist !! |
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#5
04-11-2023, 11:36 PM
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Would a hand pump like what it used to vacuum bleed brakes lines work?
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Remember no one is perfect. Everyone's butt has a crack in it! |
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#6
04-12-2023, 01:19 AM
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A Mityvac hand pump meant for bleeding brakes will probably do the trick, you can get a kit for around $50.00. https://www.amazon.com/MV8000-Automo...a-316724733774
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| The Following User Says Thank You to Stuart For This Useful Post: | ||
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#7
04-12-2023, 08:35 AM
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The hand pump is OK for checking individual components, but for testing the entire system you will need an electric pump. Due to the volume needed. At least that is what I found.
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| The Following User Says Thank You to RFCOLEMAN For This Useful Post: | ||
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#8
04-12-2023, 12:10 PM
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I have a "PIAB" (Brand) vacuum generator that is very small and SUPER powerful, runs off an air supply from your air compressor to generate the vacuum.
Tim john--- |
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#9
04-12-2023, 01:04 PM
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https://www.harborfreight.com/mityva...RoCiPsQAvD_BwE
Less that $50 from Harbor Freight with all of the attachments Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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#10
04-12-2023, 01:14 PM
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Vacuum headlight systems have a reserve tank for service use ( open them for bulb change inside a garage) the reserve in this tank should be able to work with a hand pump once evacuated.
My wife's Rainbow vacuum really works well for some faster action and leak checks.
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
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#11
04-12-2023, 06:19 PM
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For large vacuum volumes, an air compressor driven Air-Vac does the trick. It uses a venturi to pull a vacuum. If you ever tries to pull a vacuum on a brake booster with a MiTyVac, you'll appreciate one of these.
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#12
04-12-2023, 07:53 PM
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Hit the wrecking yards and get a vaccum pump out of a late model Cadillac. They are also used on other cars too. I believe some Volvos have them. Google or Rock auto can help with finding which cars have them.
https://www.ebay.com/itm/13-19-CADIL...edirect=mobile
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If it breaks. I didn't want it in the first place. _____________________________________________ 69 GTO \ 72 FIREBIRD \ 1/2 OF A 64 GTO \ 70 JAVELIN \ 52 FORD PU \ 51 GMC PU \ 29 FORD PU \ 85 ALFA ROMEO SPYDER \ A HANDFUL OF ODD DUCATI'S \ 88 S10 LT1 BLAZER & MY DAILY DRIVER 67 SUBURBAN. |
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#13
04-12-2023, 08:25 PM
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If you or know someone that does refrigeration or air conditioner work, a deep vacuum pump will work.
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#14
04-13-2023, 01:23 PM
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Thanks all for the responses. Just changed an actuator and the switch so I'm ready to test.
__________________
1969 Judge, 4-speed, CR/Parchment, Quasi-Survivor, #'s match - under restoration |
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