On Wed, 11 Mar 2015 17:01:45 -0500, Tim Wescott
wrote:

On Wed, 11 Mar 2015 17:19:07 -0400, clare wrote:

On Wed, 11 Mar 2015 15:05:22 -0500, Tim Wescott
wrote:

On Wed, 11 Mar 2015 12:40:30 -0400, Jim Wilkins wrote:

A 3/16" (0.191") brake line on my Honda rusted through from the
outside and the dealer wants $1200 to take the front and rear apart
enough to thread a one-piece new one in.

What should I watch for when I splice in a repair section with
double-lap flare fittings? Advice on the Net is contradictory and not
too helpful.

TIA -JSW

I wouldn't splice into the existing brake line, on the general principle
that if it broke once, it'll break again. If you can replace the whole
thing in sections, with all new pieces, yourself, without major
disassembly, then that's to be contemplated.

brakes = safety item safety item = don't mess around
On Hondas and Toyotas it is not uncommon to see a perfectly solid
line rot out under a retaining clip (holds line to body) and the rest of
the line is perfect.. In this case, installing a short section can be
effective and perfectly acceptable. Just make sure the line IS solid,
and make sure you do a good jog ov double flaring the line, and
supporting the repaired section when you are done. Generally a good idea
to replace the entire run that is clipped to the floor - but you can
sometimes avoid having to do the twisties on the firewall and around the
rear suspension - or at least the twisties up on the firewall/inner
fender behind the engine.

I suppose that if there's some clearly obvious section that is rotted out
for some clearly obvious reason, that would make sense. I'd inspect those
remaining bits of line damned carefully, though.
I've seen LOPTS of cases where only a section, or several sections ,
less than an inch in length are corroded. I have many times replaced
only the section of line with corroded spots, saving a LOT of work.
Very common, for instance, on 3rd gen Tercels, which have a plastic
cover clipped over the lines and salt accumulates around the brake
line clips, rotting them through right at the clip.