proportioning valve question for disk conv
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i have a 70 c10 i bought a performance online disk brake conversion kit and a booster and mastercylinder from autozone to save some money. i bought both a proportioning valve made for disk conversions, and a adjustable valve for the rear lines. problem im having is the proportioning valve i bought haves 5 holes for lines to go in. but i only have 4 lines to plug into it. i pulled this picture from the faqs ive been reading to answer my problem and noticed this small piece on top that i dont have. any help on this? thanks
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Re: proportioning valve question for disk conv
on some of the aftermarket prop valves (talking CPP part# PV-1), you will have 2 line connections for the front. you will only use 1 of those. you will need to plug the one you are pointing to in the picture above.
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Re: proportioning valve question for disk conv
thank you sir, that was my first tought but wanted to make sure, will i be fine if i only run the proportioning valve w/o the adjustable one for the rear brakes?
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Re: proportioning valve question for disk conv
I don't have an adjustable valve on my rears. I never had a problem, but many people will tell you it makes the system much better.
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Re: proportioning valve question for disk conv
right on ill get these installed tomorrow and get the beast back on the road, thanks
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Re: proportioning valve question for disk conv
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This is my set up on my '72 3/4 ton.....
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Re: proportioning valve question for disk conv
This is my 71 1/2 ton. The only time I have ever had a issue with the backs locking up is in a emergancy stop in the rain. On dry pavement they have never been a problem.
http://67-72chevytrucks.com/gallery/...0/DSC01760.JPG |
Re: proportioning valve question for disk conv
Bleeder.
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Re: proportioning valve question for disk conv
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one more question, on the bottom of the proportioning valve the line for the front brakes the fitting that goes in there is 1/8 and i can only fit a 1/8" line all the other lines are 1/4" is this the same on yall?
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Re: proportioning valve question for disk conv
That line is 3/16" and the thing in your first pic is a bleeder screw.;)
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Re: proportioning valve question for disk conv
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Re: proportioning valve question for disk conv
I also have a question on this subject my truck came with 4 wheel drums . I changed it to 4 wheel disc will the orignal proportioning valve work.
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Re: proportioning valve question for disk conv
4wheel drums to 4wheel discs you need to change both the master cyl and the prop valve for proper operation
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Re: proportioning valve question for disk conv
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no. you should go with a front disc/rear drum prop valve with an adjustable valve governing the rear. I don't think a specifc disc/disc valve is offered. |
Re: proportioning valve question for disk conv
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I got mine at the local ACE Hardware store. They are specialty fittings. (Inverted flare adapters) |
Re: proportioning valve question for disk conv
all silverados made in the past 6-7years have 4wheel disc master cyl and proportioning valves thats what i'd be looking at to use for 4wheel disc brakes on a chevy truck
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Re: proportioning valve question for disk conv
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Thanks for your help |
Re: proportioning valve question for disk conv
Corvettes of the era offered a disc/disc master, I believe. I don't know what was used in the JL8 Camaros, but I assume the same unit. Parts-store cheap, either way.
Don't forget that on 3/4T the front is the rear line and vice versa, at least as I recall it was backwards from that 1/2 tons. |
[QUOTE=davepl;7439153]Corvettes of the era offered a disc/disc master, I believe. I don't know what was used in the JL8 Camaros, but I assume the same unit. Parts-store cheap, either way.
Don't forget that on 3/4T the front is the rear line and vice versa, at least as I recall it was backwards from that 1/2 tons.[/QUOTE It is a corvette style master cylinder with a pol proportion valve. Just want to make sure I have everything I need when I go to hook it up. Thanks. Posted via Mobile Device |
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