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#1 |
PITbut
Join Date: Sep 2007
Location: monroe washington
Posts: 3,052
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Brake booster check valve needed?
71 chevy with booster and this big ugly check valve looking thing that comes right off the booster then goes to the rear of the carb. Is that necessary to have>
What have you guys done to pretty that up? I was going to just run a nice SS line from booster to carb, but that things is in the way.. Thoughts?
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New project. 1971 Twin Turbo blazer http://67-72chevytrucks.com/vboard/s...d.php?t=676047 My new YOUTUBE channel.. Videos of my truck and a current walk around. Lyrikz74 Youtube channel DONE! SOLD! ![]() My 1971 stepside build thread My Build Thread UPDATED 6/11. DONE and sold. |
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#2 | |
PITbut
Join Date: Sep 2007
Location: monroe washington
Posts: 3,052
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Re: Brake booster check valve needed?
Quote:
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__________________
New project. 1971 Twin Turbo blazer http://67-72chevytrucks.com/vboard/s...d.php?t=676047 My new YOUTUBE channel.. Videos of my truck and a current walk around. Lyrikz74 Youtube channel DONE! SOLD! ![]() My 1971 stepside build thread My Build Thread UPDATED 6/11. DONE and sold. |
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#3 |
Registered User
Join Date: Aug 2009
Location: St. Paul MN.
Posts: 1,996
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Re: Brake booster check valve needed?
The check valve is connected to the booster the other part is the filter It helps protect the rubber diaphragm in the booster. I would keep it
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Fuzzy |
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#4 |
PITbut
Join Date: Sep 2007
Location: monroe washington
Posts: 3,052
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Re: Brake booster check valve needed?
Oh. Neat. I didnt know that. Its such an eye sore though.
__________________
New project. 1971 Twin Turbo blazer http://67-72chevytrucks.com/vboard/s...d.php?t=676047 My new YOUTUBE channel.. Videos of my truck and a current walk around. Lyrikz74 Youtube channel DONE! SOLD! ![]() My 1971 stepside build thread My Build Thread UPDATED 6/11. DONE and sold. |
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#5 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Brake booster check valve needed?
try repositioning it to sort of hide it from eyesight so you ferget about it
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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#6 | |
PITbut
Join Date: Sep 2007
Location: monroe washington
Posts: 3,052
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Re: Brake booster check valve needed?
Quote:
What would it be filtering though, the carb SUCKS through that, it doesnt blow through it.
__________________
New project. 1971 Twin Turbo blazer http://67-72chevytrucks.com/vboard/s...d.php?t=676047 My new YOUTUBE channel.. Videos of my truck and a current walk around. Lyrikz74 Youtube channel DONE! SOLD! ![]() My 1971 stepside build thread My Build Thread UPDATED 6/11. DONE and sold. |
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#7 |
Registered User
Join Date: Aug 2009
Location: St. Paul MN.
Posts: 1,996
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Re: Brake booster check valve needed?
Crankcase fumes when your big block shuts down
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Fuzzy |
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#8 |
needs more $$$
Join Date: Mar 2004
Location: Sacramento
Posts: 1,936
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Re: Brake booster check valve needed?
I'm not saying you should remove it, but this is the 1st time I've seen one on that line. Since you already have it there might as well try to hide it...but if were mine and I couldn't hide it, I'd wouldn't think twice about ditching it...
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1970 2wd Blazer |
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#9 |
Senior Member
![]() Join Date: May 2010
Location: Wisconsin & Arizona
Posts: 4,844
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Re: Brake booster check valve needed?
I've never seen one of these on any original GM 67-72 truck. I have seen them on later GM trucks and cars. I can't recall the years they were used, but perhaps from the mid-70s until sometime later. I think the 1st one I saw may have been on our 76 Olds Cutlass.
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#10 |
Cruzin
Join Date: Dec 2009
Location: on the road
Posts: 2,835
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Re: Brake booster check valve needed?
mine doesn't have one only seen them on the later models, i thought it was there to hold the vacuum to allow a boosted stop if the engine stalled/quit.
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Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14
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#11 | |
PITbut
Join Date: Sep 2007
Location: monroe washington
Posts: 3,052
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Re: Brake booster check valve needed?
Quote:
__________________
New project. 1971 Twin Turbo blazer http://67-72chevytrucks.com/vboard/s...d.php?t=676047 My new YOUTUBE channel.. Videos of my truck and a current walk around. Lyrikz74 Youtube channel DONE! SOLD! ![]() My 1971 stepside build thread My Build Thread UPDATED 6/11. DONE and sold. |
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#12 |
Registered User
Join Date: Jun 2007
Location: Everest Ks
Posts: 749
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Re: Brake booster check valve needed?
If you don't like the way it looks then take it off. As said before it is not needed, 67-72 trucks never came from the factory with them anyway. I've always seen them on smog era cars and trucks from the mid-70's and on. I'm not even sure what "they" are called, but i'm sure it is some sort of filter or check valve. Joseph
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1970 Chevelle Nomad station wagon 1966 C-10 lwb,250-six,granny 4speed ![]() ![]() 1966 C-10 lwb,factory A/C,Custom Cab ![]() 1954 Delray 2-door sedan [rat rod project]
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#13 |
Registered User
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,592
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Re: Brake booster check valve needed?
I always thought it was there to hold vacuum in the booster to guarantee a power-assisted pedal at all times. I would keep it.
That being said, I have a few Honda check valves off mid 90's Accords and Civics, they use the same size booster line, the valve is about 3/4" long and slightly larger than the OD of the line. I'm going to try one out on my C10 once its running. |
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#14 |
Registered User
Join Date: Aug 2009
Location: St. Paul MN.
Posts: 1,996
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Re: Brake booster check valve needed?
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Fuzzy |
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#15 |
Registered User
![]() Join Date: Nov 2007
Location: Hermiston, OR
Posts: 947
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Re: Brake booster check valve needed?
The part that goes into the brake booster IS the check valve.
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Running in place gets you nowhere fast. -me 1968 GTO 4-spd covnvertible 1970 K-20 4-speed, factory AC. |
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#16 |
Registered User
Join Date: Aug 2009
Location: St. Paul MN.
Posts: 1,996
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Re: Brake booster check valve needed?
100% correct
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Fuzzy |
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#17 |
Registered User
Join Date: Nov 2008
Location: Italy
Posts: 1,278
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Re: Brake booster check valve needed?
Ditch the filter but keep the check valve. You could make it look better by using a stainless hose.
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'68 C-10 SWB 383 Stroker (Sold 3/2/2013) '87 R2500 LWB 454 TBI converted to Carb ![]() |
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#18 |
Cruzin
Join Date: Dec 2009
Location: on the road
Posts: 2,835
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Re: Brake booster check valve needed?
x2 i'm going to bend up some 3/8 steel line for mine in the future i've used steel line for other vaccuum hoses looks great.
__________________
Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14
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