| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,132 Posts1,056,386 Members48,441 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | 
#42684 09/13/2004 5:40 PM | Joined: Mar 2002 Posts: 384 Shop Shark | | Shop Shark Joined: Mar 2002 Posts: 384 | I need a source for a windshield wiper vacuum line check valve. I made up a 16 oz. tank to help my wipers keep going while I accelerate. It will give me about 2 complete wiper cycles when I pinch off the vacuum line to the vacuum tank from the intake manifold. I need a check valve to keep the vacuum from being lost to the intake manifold when I accelerate.
It needs to have a weak sping and an inlet and outlet of about 1/4 inch to match my vacuum lines. Anyone know of such an animal, please let me know. Thanks - Scott
55 1st Chev.
| | |
#42685 09/13/2004 6:29 PM | Joined: Jan 2001 Posts: 662 Shop Shark | | Shop Shark Joined: Jan 2001 Posts: 662 | NAPA and Mom&Pop parts stores should carry them. Search NAPAonline for Vacuum Check Valve Universal http://www.napaonline.com | | |
#42686 09/13/2004 10:28 PM | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | These were used a lot on polution devises
on 70s-80s cars. They are available at parts
stores & salvage lots.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
#42687 09/14/2004 12:05 AM | Joined: Feb 2004 Posts: 29,813 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,813 | If there's room to hide it, you could use a much bigger reserve tank. I'd suggest a 30-lb. Freon drum from your local refrigeration repair shop. They're non-refillable, and most of the shops just discard them when they're empty. Drill a hole in one end big enough to accept a rubber grommet, and use the check valve from a power brake booster, and a 3/8" line to the intake manifold. Then solder a piece of 5/16" steel brake line into the other end, and run your vacuum line to the wiper control from there. Lots of reserve vacuum! Hide the tank under the bed or cab if necessary.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | |
#42688 09/14/2004 12:29 AM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | Just be sure to limit the oriface or hose size on that tank so it doesn't act like a vacuum leak when you are trying to start the engine...
Paint & Body Shop moderator
A lone amateur built the Ark. A large group of professionals built the Titanic. | | |
#42689 09/14/2004 2:49 PM | Joined: May 2001 Posts: 1,904 'Bolter | | 'Bolter Joined: May 2001 Posts: 1,904 | How about a dual action fuel pump that has a vacuum port? Mine works pretty well.
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
| | |
#42690 09/14/2004 5:53 PM | Joined: Mar 2002 Posts: 384 Shop Shark | | Shop Shark Joined: Mar 2002 Posts: 384 | Thanks for the varied replies. I'm going to have to check the sources you've mentioned and consider big tanks and a vac pump. Hard to decide. _Thanks - Scott
55 1st Chev.
| | |
#42691 09/15/2004 2:29 AM | Joined: Mar 2004 Posts: 3,068 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 3,068 | A lot of "newer" cars have a oneway check valve in their windsheild washer lines. It keeps the solvent from draining back to the tank. It should be close to the diameter and flow rate that you want.
Just a thought,
Scott | | |
#42692 09/30/2004 10:26 PM | Joined: Nov 2000 Posts: 582 Shop Shark | | Shop Shark Joined: Nov 2000 Posts: 582 | Try McMaster Carr ( www.mcmaster.com) They have just about any type of check valve you may ever need. | | |
|
|
| |
