I have a brand new repro disk metering valve for my velle, I purchased about eight months ago, and as I near completion of drivetrain restoration, I finally got it installed the other night and I would like to know if there are tricks for initial installation. mine is leaking brake fluid from the flared fitting and coming out the where the pipe goes in. almost like the flare is not contacting the brass valve inside the metering unit. I removed the line going to the unit from the master and discovered a contact pattern on the valve inside the metering unit, and the flare on the pipe looks appropriate when compared to other ends on car. I tried compressing the button on the back of the metering valve upon installation but this did not help. I almost think this is a dud from the factory but cannot return as such due to the length of time that has passed since I purchased it. Anyways any input would be greatly appreciated. PS Im going to try making a new pipe after I try to reflare the end of the one I already have. The brake lines I purchased from our sponsor as an entire package, so I cannot blame my faulty work yet. Thanks team Jason.

I got frustrated by a similar problem on a friend's 442 I am helping restore. I had a persitent leak at one of the fittings. Out of desperation I teflon taped it. Figured the brake fluid would eat right thru it. So far so good, no leaking after a couple weeks.

I have read more than once that people that are using stainless steel lines are having the same problem. They speak about a small ring that goes between the flare and the seat to help sealing.

If the seat looks good, and the lines are not stainless, I would try to make another flare.

Rob

Teflon tape is a big no-no on any type of flared fitting whether it is an automotive 45 degree type or an AN 37 degree. If you have to use any type of sealant, there is something wrong with the seat of the flare. Many new hard lines have problems with leaking/seeping and often require tightening, loosening and retightening to get them to seat properly and be sure to use a tubing wrench on the flare nut and a good OE wrench on the block.

The small sealing rings some folks speak of are used only with 37 degree AN style fittings. They are made from mild steel or aluminum and distributed by Vio-Shan/Fairchild or Airdrome Parts.

Dave