Connecting Master brake cylinder to proportioning valve

Hi, thanks for quick reply. We have Corvette calipers in front and original drums at the rear. New master cylinder and proportioning valve, all lines were bled out. Master cylinder bench bled, rear brakes adjusted tight. Car brakes on the front but rear wheels keep turning. I see many pictures online of pipe routing, and start doubting how we have routed it.
The picture is how it is routed now. But should I cross the lines an change ports?

Vennlig hilsen

Knut Smilden

Hi Roy. The 1/4 inch tube goes to the rear. The two 3/16 to the front. When we bleed, there is good stream out of all bleeder screws, and the pistons in the wheel cylinders in the drums move. But the rear brakes will not hold when we brake. So maybe I would try to cross the lines from the master cylinder to the proportioning valve. I have seen pictures of that.

Knut

The master cylinder and the proportioning valve are new.

Knut

Okay, so not cross lines from master cylinder to proportioning valve. I will look for some more air.

Thanks,

Knut

Bleeders are on top.
Knut

So in the master cylinder: the primary piston is the one nearest to the brake booster, and the one that feeds the front brakes?

Knut

But there are many pictures online where the line from primary port goes to the port on the proportioning valve that feeds the rear brakes?

Knut

But the primary are to the left on the picture, and those to lines go to the front. Is that not right then?

Sending you picture of the old master cylinder and proportioning valve. Are the ports correct "named"?

Here it is.

Knut

Thanks, then I will change to the old proportioning valve, witch by the way, was connected from secondary out port on the master cylinder, to the outlet port to rear brakes on the proportioning valve.

Will do.
Thanks Roy.

Regards,
Knut