dual rear brake line proportioning valve 1986 RS V6 - First Generation Forum

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dual rear brake line proportioning valve 1986 RS V6
Tuesday, November 10, 2020 5:22 PM
Any advice for what is the original part number or an equivalent replacement for the fender mounted brake proportioning valve on a 1986 Cavalier RS convertible with 2.8L V6?
It seems to have 6 bubble flare ports, 1 mounting hole, and an electrical connector.
The bottom 2 ports are for separate right side and left side brake lines to the rear drum brakes.
The top 2 ports are the inputs from the master cylinder.
And 2 middle ports for the front disc brakes.

Re: dual rear brake line proportioning valve 1986 RS V6
Wednesday, November 11, 2020 12:42 AM
I think this might be what you are looking for:

VALVE , BRK COMB VLV (1985 - 85).....25519477
Re: dual rear brake line proportioning valve 1986 RS V6
Wednesday, November 11, 2020 12:44 AM
butch nackley wrote:

I think this might be what you are looking for:

VALVE , BRK COMB VLV (1985 - 85).....25519477

Sorry, too early in the morning.
(1985 - 86)
Re: dual rear brake line proportioning valve 1986 RS V6
Wednesday, November 11, 2020 8:06 AM
I can read 44 KH 436 6 stamped into the side. The bottom two ports are for the rear drums. The top two are from the master cylinder. The front and back ports seem to be for the front calipers. On the rear port I see what seems to be an extra fitting. And this has just 1 mounting hole.

Thanks Butch Nackley for the information. Do you have any link to a source for the part? Or some idea where that part number you have can be searched?
Attachments
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Re: dual rear brake line proportioning valve 1986 RS V6
Wednesday, November 11, 2020 4:13 PM
That looks like what the drawing in the parts book shows. And it shows it is attached with one bolt.
You can contact this place; http://www.kakapart.com/parts/gm-25519477.html
I idea if they actually have it or not, but maybe worth a try.
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