I'm sure we'll hear a number of thoughts on this one Glen....
Copper lines are "rolled"; thus they have a seam. Which is a weak spot in them
and making them much less capable to withstand hydraulic pressure.
Glen Byrns wrote:
> I tried the archives last night and this morning, but they seem to be
> unavailable to me.
>
> What are the acceptable materials for brake lines for a Sprite (or in this
> case, Morris)? The replacement line I got from MM for the master cylinder
> to rear splitter was copper. The steel lines I get from the local auto
> parts store for a couple of bucks are so hard that they destroyed the
> fitting for the double flare tool before they could form a flare. The
> originals are not copper and seem to be as hard as the American made steel
> lines I was trying to use. Is copper OK? Are there different grades of
> copper available in this size? I don't know how much pressure is generated
> in a brake line, but I have a hard time picturing the copper balooning up as
> a result of it.
>
> The instructions on the flare tool box says it is to be used on copper,
> aluminum, and THIN steel lines. This implies to me that these materials are
> used for brake lines since the double flares it is intended to create are
> used primarily for braking systems. What gives, or more appropriately, what
> won't give?
> If copper is totally unacceptable, what tool is capable of making a double
> flare on steel tubing. The NAPA one sure isn't.
>
> Regards,
> Glen Byrns
> '59 bugeye
> '59 Morris Traveller (Winifred)
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