[s-cars] Rear brake saga - The Questions have Ended!

[Theodore Chen]

--- Eric Phillips <gcmschemist at gmail.com> wrote:
> 
> So, I take that tool from their hands, and swallow the fact that even
> though you or I could make lines just as good (or better) than
> StopTech, I'm not going to take the chance.  CYA.

a valid consideration.  this goes to the issue of whether you use
pre-made DOT lines or assemble your own.  the original issue that
started this thread is whether to use banjos or 1/8 NPT, and that's
separate from the DOT/liability issue.

> > > I've been talking with Matt at StopTech, and I think that he can help
> > > me out no matter which way I go - banjo or NPT.  One of the advantages
> > > of banjo is that you avoid line-twist issues that can arise from
> > > having to spin the whole line (as with NPT) as opposed to just using a
> > > bolt.
> >
> > the fittings i use are earl's swivel-seal.  line-twist isn't a problem.
> > you don't need both ends to be swivel-seal.  just one.
> 
> Ooo, I like it.  And, if you install the line on the caliper first,
> then scew the hardline fitting into it's end, there is no twist issue
> either, swivel or no.  The only issue left is routing.  You say it's
> no problem.  Good enough for me.  :)

it's possible that your 993TT calipers place the fitting in a different
location from my 996 calipers, in such a way as to create routing problems
when using the straight male fitting.  but i'd be a little surprised if 
there were a significant difference.

> > i think people from BIRA have also gotten lines from paragon.  they
> > should already know the correct hose lengths and fittings to use.
> 
> I haven't heard back from them yet.  Which is a little strange.

you haven't heard back from BIRA people or paragon?

did you check the BIRA files in the birabrakes file storage on 
yahoogroups.com?

http://www.paragonperformance.com/

> > > Hmmm - an NPT fitting would have essentially zero fluid flow
> > > restrictions, however...

by the way, the correct fitting is 10x1mm male, not 1/8 NPT.  i
was thinking of wilwood calipers, not brembo (which of course uses
metric).  sorry about that.

igor posted the fitting sizes and line lengths to this list several
years ago.  i think it's OK to quote his post here:

"Do yourself a huge favour and order the lines 1" longer than the OEM
rubber ones. THe rubber ones do stretch at the extremes of the
suspension travel; the SS ones don't - they break instead. 
Many years ago I barely caught my RR line: half of the braids were
broken. Since then I had never ordered a "kit for my car" from an
aftermarket vendor (and the one who sold it to me is very well known on
the list). Since then I trust no one but myself with my brakes. I always
measure the actual lines and order them individually per my own spec.

I have just received the Earl's kit for my UrS6 (at ~$15/line, ~$60
total):
FR: 63071018	18" overall, 10x1mm male x 10x1mm female
RR: 63071010	10" overall, 10x1mm male x 10x1mm female

Also buy two small rubberised steel electrical clamps at Sears or Lowes
(Home Depot does not have them) and secure the lines to the strut
housing. If you don't the SS lines _WILL_ cut thru pretty much
everything around self like a round file."

> > i wouldn't worry about that.  there isn't much fluid flow in a
> > properly bled brake system, which is why you can use skinny little
> > -3 hose.
> 
> Good to know.  Even with a four-piston caliper, huh?  It's not intuitive.

brake fluid is essentially incompressible, and there isn't much movement
of the pistons because the brake pads basically float on the rotor.
with braided steel hoses, there won't be much expansion of the hoses,
and the brembo calipers are stiff so there won't be much flex either.

-teddy


__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com