[Chucky5150]

I'm in the process of changing over from 4 wheel drum to disk brakes up front and the stock drums in the rear.

I'm at the point of trying to get the Adjustable Proportioning Valve installed in to the rear brake line. The rear line that is there right now is 1/4 inch. The brake kit came with some 3/16th inch line.

Would it be ok to run the 3/16th inch line from the metering block (I believe that is what it is called) to the proportioning valve. Then have 1/4 inch line coming from the valve to the rear drums?


Thank you.

p.s. any hints / tips on making double flare ends would be greatly appreciated.

[poncho62]

You can do that, but you can also get a 1/4 to 3/16 adapter
What sized line was going to the rears before?.....

[joe_padavano]

NAPA stores have a selection of these adapters. They are often called "master cylinder adapters". Speedway Motors sells them as well.

[Chucky5150]

Originally Posted by poncho62

You can do that, but you can also get a 1/4 to 3/16 adapter
What sized line was going to the rears before?.....

It was 1/4 inch line from the metering block back to the rear axle.

[poncho62]

Originally Posted by Chucky5150

It was 1/4 inch line from the metering block back to the rear axle.

Use the 1/4 line then....If you use 3/16 you would need an adapter at the rear fitting.

[Chucky5150]

Thanks for the info guys. It looks like I'm going to need get get fittings no matter how I do this.

The Proportioning Valve has 5/16" thread (3/16" line) on the IN and OUT side of the valve.

The metering block has a 7/16" (1/4" line) coming out of the back and going to the rear.

The 1/4" line I got from the part store has 3/8 fittings on the ends.


Looks like I'm just going to take the stuff to NAPA and ask them how to do this.