VWDiesel.net The IDI, TDI, and mTDI source.

General Information => Upgrades (non engine related ) => Topic started by: jtanguay on May 04, 2009, 06:12:34 pm

Title: Adjustable brake proportioning valve???
Post by: jtanguay on May 04, 2009, 06:12:34 pm
i found this (http://www.vwparts.net/mm5/merchant.mvc?Screen=PROD&Product_Code=MB16-3157&Category_Code=BRAKE_LINES_AND_HOSES&Store_Code=VWP) while searching for a cheap brake proportioning valve for my car.  i suspect that since its caked with rust, that it won't last, or is already gone.  now a new one costs about  $104.92+tax.  so why not get an adjustable one at a cheaper price?  now with shipping and duty etc, it will probably still cost me about $60, but thats way cheaper.

any thoughts? this could also help anyone switching to rear disc and trying to find the right proportion of braking...
Title: Adjustable brake proportioning valve???
Post by: Vincent Waldon on May 04, 2009, 06:47:35 pm
Just my opinion:  apples and oranges. :wink:

That's a brake bias valve that lets you statically set the balance between the front and rear braking system... useful for race cars, off-road vehicles, sand rails, etc.

The OEM VW proportioning valve does the same thing but dynamically... responding to the vehicle load, speed, aggressiveness of braking etc at that moment to adjust the pressure as needed.

The other "gotcha" with the device you've linked to is that it appears to only have a single in and out port.  Installation would therefore require you to  tie the rear brakes together, defeating the dual diagnal safety braking system your car has (dual brake circuits, one front and one rear brake on each circuit).
Title: Adjustable brake proportioning valve???
Post by: jtanguay on May 04, 2009, 06:52:49 pm
ah good to know.  thanks Vince.  i just really don't want to sink more money into this car.   :(

are there cheaper alternatives out there?  or is the $100 part the only way?

thanks
Title: Adjustable brake proportioning valve???
Post by: jasonsansfleece on May 05, 2009, 10:01:34 pm
I found this today whilst searching for brakes, $69.99 shipped
http://www.mjmautohaus.com/catalog/product_info.php?cPath=2_6_14_38_76_789&info=ATE_357612151_Proportioning_Valve_OEM&products_id=1506
Guy
Title: Adjustable brake proportioning valve???
Post by: jtanguay on May 05, 2009, 10:12:56 pm
Quote from: "jasonsansfleece"
I found this today whilst searching for brakes, $69.99 shipped
http://www.mjmautohaus.com/catalog/product_info.php?cPath=2_6_14_38_76_789&info=ATE_357612151_Proportioning_Valve_OEM&products_id=1506
Guy


thanks man, but after customs charges, shipping, and the conversion to my CDN dollars, it will probably equal out the same :(
Title: Adjustable brake proportioning valve???
Post by: Vincent Waldon on May 05, 2009, 10:33:09 pm
Yeah, I think this is one of those times when you just need to close your eyes, pay the piper, and realize that the life you save may be your own. :wink:

Anything at the wreckers is gonna be suspect, at best.
Title: Adjustable brake proportioning valve???
Post by: jtanguay on May 05, 2009, 10:35:28 pm
Quote from: "Vincent Waldon"
Yeah, I think this is one of those times when you just need to close your eyes, pay the piper, and realize that the life you save may be your own. :wink:

Anything at the wreckers is gonna be suspect, at best.


exactly why i need to go new  :)

i'm kicking myself a bit though because for some reason the autoparts sites were listing a proportioning valve for around $70 or so.  then again, maybe i forgot to add .ca to the URL  :lol:
Title: Re: Adjustable brake proportioning valve???
Post by: smutts on May 22, 2009, 04:52:19 pm
Yeah, I think this is one of those times when you just need to close your eyes, pay the piper, and realize that the life you save may be your own.

Many years ago with my Renault and a bias valve I had just fitted I did some research. Wet tree lined brow of a hill, fortunately I span between all those trees. I didn't enjoy being a passenger whilst my arse was chewing a hole in the seat. :P

Er- How does one do quotes?
Title: Re: Adjustable brake proportioning valve???
Post by: Pat Dolan on June 15, 2009, 09:42:51 am
ah good to know.  thanks Vince.  i just really don't want to sink more money into this car.   :(

are there cheaper alternatives out there?  or is the $100 part the only way?

thanks
Geez, I pay $140 at JOBBER for a Ate regulator in Canada.  What/where are you getting for $105???

BTW:  what are you trying to accomplish with the new regulator?  There are some ways to manipulate it if brake balance is your need.
Title: Re: Adjustable brake proportioning valve???
Post by: jtanguay on June 16, 2009, 11:18:01 pm
check out www.autopartsonlinecanada.com

the reason i need a new one is mine is completely rusted.  it might be okay, but my wheel cylinders are in real bad shape, and i doubt the rear proportioning valve is healthy.

http://parts.autopartsonlinecanada.com/parts/apocanada/wizard.jsp?year=1992&make=VW&model=JET-D-001&category=N&part=Brake+Proportioning+Valv

thats the link for it.