Author Topic: Metering valve blow out  (Read 536 times)

x66 714

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Metering valve blow out
« on: October 20, 2021, 03:48:09 PM »
1969 Camaro. The metering valve, the round valve below the master cyl has blown out twice where the boot is at. Once when I rebuilt & once after having it professionally rebuilt. Funny thing is it never leaked till I rebuilt it. I had the master cyl sleeved & rebuilt. I did all the calipers & wheel cyl myself. I haven't touched the prop valve (frame rail) or the junction where all the lines come together below the metering valve. Brakes working on all 4 corners. Any ideas what might be going on? Thank you, Joe
See America's First, Chevrolet

1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO. Purchased March 1976
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E. Purchased April 1981

z28z11

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Re: Metering valve blow out
« Reply #1 on: October 30, 2021, 08:34:27 PM »
Checkout the link:

http://www.camaros.org/forum/index.php?topic=18393.msg166910#msg166910

Did you get your parts from MCR ? If not, contact them and explain the problem. There are several threads on this common difficulty -

Regards,
Steve
1968 Z28 M21/U17 BRG/W 1967 Chevy ll Nova SS 
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06  1949 3100 5wd 235/6

x66 714

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Re: Metering valve blow out
« Reply #2 on: October 30, 2021, 09:17:04 PM »
Thanks for the link. Parts did come from MRC on all rebuilds. I had Mike Gibbons do the 2nd one after I did the first. Mike sent me another one which seems to be fine. I sent him my original for him to study...Joe
See America's First, Chevrolet

1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO. Purchased March 1976
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E. Purchased April 1981

z28z11

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Re: Metering valve blow out
« Reply #3 on: November 02, 2021, 12:40:56 AM »
I read in the thread that DW had a leakage problem with one of his rebuilds until he found some contamination in the bore (which was causing the leak). I guess you just have to near NASA in watching for FOD internally -

Let us know the outcome -

Steve
1968 Z28 M21/U17 BRG/W 1967 Chevy ll Nova SS 
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06  1949 3100 5wd 235/6

cook_dw

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Re: Metering valve blow out
« Reply #4 on: November 02, 2021, 12:45:10 AM »
I had and still have a leaking one on the green car.  Thought I had it sealed up when I had the car out a couple weeks ago but noticed it was leaking again.  Iím about make a dummy valve and have it as a pass through.