Date: Mon, 10 Dec 2007 23:26:13 -0800
Reply-To: neil N <musomuso@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: neil N <musomuso@GMAIL.COM>
Subject: Re: badly rusted mystery part
In-Reply-To: <023101c83bbd$eb5fc900$6401a8c0@TOSHIBALAP>
Content-Type: text/plain; charset=ISO-8859-1
Thanks Scott.
The Vanagon I wrote of is almost completely parted out, so no brake testing
needed. Thanks for pointers though. And interesting re: the pressure
regulator. Good to know the one on the parts van is likely good.
I remember my old 71' Volvo 145S. It had one regulator per rear wheel IIRC.
Those cars had some pretty advanced designs. Especially considering the
year.
Neil.
On Dec 10, 2007 10:20 PM, Scott Daniel - Shazam <scottdaniel@turbovans.com>
wrote:
> Hi,
> there is a test for them, i think it involves putting a break pressure
> gauge on a rear line.
> No one has one that i know of, it would have to read up to 2,000 psi.
> Perhaps a very, very few special or racing shops.
> I've never seen a bad one on any vanagon.
> I did mess around with that function a lot though.
> I put a rear disc brake kit on a syncro vanagon.
> i never liked how the brakes felt and worked. I tried bypassing that valve
> as suggested, that didn't help. I even put on an adjustable racing one, and
> that didn't help.
> So I always work on *everything else* for poor brake performance, MC,
> booster, how well the pads 'bite' on the discs, hoses, calipers, etc.
> I've worked on a number of 4 wheel disc older Volvos when the real problem
> was just how well the pads grabbed on the discs.
> Had that on a Honda once too.
> but you have to be sure everything is right hydraulically first.
> and a bad booster is rare, but can occur.
> it's fairly easy to have an older MC not work right in both circuits.
> take the van out and use the brakes fairly hard a number of times, then
> compare front and rear, and left /right, brake temps.
> if you get any huge differences, like quite hot in front, and barely warm
> in the rear.........that tells you something .
> I just had an 85 weekender with high firm brake pedal, but lousy slowing
> down. The rears were hardly working. A good used MC that i had around
> fixed it just fine - my own personal van of course.
> scott
> turbovans
>
>
> -----Original Message-----
> *From:* neil N [mailto:musomuso@gmail.com]
> *Sent:* Monday, December 10, 2007 9:36 PM
> *To:* Scott Daniel - Shazam
> *Cc:* vanagon@gerry.vanagon.com
> *Subject:* Re: badly rusted mystery part
>
> Scott.
> During my journey into parting out my 85, I did a quick visual of the
> pressure limiting valve.
> Can this part can be tested?
>
> The brakes were iffy on this van when I test drove it, (MC and/or rears)
> so I wasn't about to "ham" on the brakes to see how well the regulator
> worked!
>
> Just curious.
>
> Thanks,
>
> Neil.
>
>
>
> On Dec 10, 2007 8:41 PM, Scott Daniel - Shazam < scottdaniel@turbovans.com>
> wrote:
>
> > You got the right idea.
> > I'd call that the 'pressure limiting valve' for the rear brakes.
> > Evidently they got no rust-prevention treatment, and are bare cast iron.
> > I'd scrub it with a metal wire brush to get it to bare metal, then treat
> > is
> > with a rust treatment that turns it to premiered metal, then paint it.
> > In situ if possible.
> > Scott
> > www.turbovans.com
> >
> > -----Original Message-----
> > From: Vanagon Mailing List [mailto: vanagon@gerry.vanagon.com] On Behalf
> > Of
> > Allan Streib
> > Sent: Monday, December 10, 2007 8:13 PM
> > To: vanagon@GERRY.VANAGON.COM
> > Subject: badly rusted mystery part
> >
> > Looking around under the front end of my '91 Vanagon GL, I noticed a
> > very rusted part, evidently part of the brake system, since it has
> > two steel brake lines connected to it. This mystery part is mounted
> > on the right frame rail near the sway bar. Is this the "pressure
> > regulator" that I see on a couple of the parts web sites? The rust
> > is just falling off it in chunks unusual because there is not really
> > much rust anywhere else under the front. Do they normally rust so
> > badly?
> >
> > Allan
> >
>
>
>
> --
> Neil Nicholson. 1981 Air Cooled Westfalia -
> "Jaco" (Bustorius) http://web.mac.com/tubaneil
>
> Engine swap beginings: http://tubaneil.googlepages.com/
>
>
--
Neil Nicholson. 1981 Air Cooled Westfalia -
"Jaco" (Bustorius) http://web.mac.com/tubaneil
Engine swap beginings: http://tubaneil.googlepages.com/
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