Metering valve blow out

[x66 714]

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

[z28z11]

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

[x66 714]

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

[z28z11]

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

[cook_dw]

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.  I’m about make a dummy valve and have it as a pass through.