[TR] TR4 Brake line restrictor valve

[Lee&John Howard]

I found it! Knew I would once I brought the list into the hunt.

Thanks Michael and Randall for setting me straight on the valve's function.
Of course.

I think I'll leave it out, as you suggest, and see how it goes.

Thanks for your help.

John



On Fri, May 9, 2008 at 5:11 PM, Randall <tr3driver at ca.rr.com> wrote:

> > I lost the tiny valve that sits inside the 4-way connection
> > that, I assume,
> > keeps the front brakes sound if the rear ones spring a leak.
>
> Nope, not what it does.  Look carefully, it's between the MC and all the
> brakes.
>
> What it does do, in theory, is hold a small amount of pressure in the
> brakes
> all the time.  This in turn keeps the caliper pistons extended so the pads
> touch the rotor, even if the rotor wobbles a little due to spindle flex,
> bearing play, etc.  Otherwise, you get a low brake pedal after hard
> cornering.
>
> > No listing, naturally, for a replacement at the usual places.
> > Anyone have a
> > spare valve lying around?
>
> Happens I do.  Write me off-list if you're interested.
>
> > I think the system will work fine without the valve, minus the safety
> > feature, correct?
>
> Yup.  I deliberately removed the guts of my RPV many years ago (since it
> also makes the front brakes drag a bit all the time) and I've never
> regretted it.  Takes some really spirited driving to cause the low pedal
> and
> then a single pump brings it up where it belongs; so it's not a been
> problem
> for me.
>
> And I'm anticipating that Uncle Jack's improved spindles and spacers will
> eliminate the low pedal (but haven't tried it yet).
>
> > For those of you who want the original mild steel,
>
> No thanks.  I already lost one car due to rotted steel lines, so this time
> around I'm going with the Cunifer lines.
>
> Randall
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