[Diy_efi] Brake pad spacers (sorry off topic but in need of help)

[Avery Nisbet]

Is this on a race car?  Or a show truck?

On a race car use plates less likely to fail and they move heat better.
For that matter don't use the pucks or dohnuts you want to make on anything.

Thermal expansion could cause them to grow faster than the pistons and
crack them.
If they don't grow as fast as the pistons then they could get loose
and work their way out.  Possible causing a brake lockup, something
you don't want the rears todo.


-Avery

On Fri, Oct 22, 2010 at 9:58 PM, Dan <dzorde at yahoo.com> wrote:
> Hi all,
>
> Sorry to be off topic, but I know the members of this list hold a wealth of
> information on general automotive ideas.
> Anyway, problem is my rear?calipers (4 piston fixed mount) are made for thicker
> disks than I'm using (like 8mm thicker). So I want to space the pads to take out
> some of the gap.
> Sooo, has anyone ever just made a spacer that extends the piston length
> (machined with a collar to sit in the end of it), rather than use a solid plate
> spacer ?
> In my case it is much faster to just turn up? 8x piston bungs instead of 4x
> spacer plates.
> The plan was to not have them solid on the end, but more like a very thick piece
> of ally pipe (these are 1.75" pistons).
> So any pros / cons for this ?
> Expansion issues of the ally bungs in the piston, I could machine them slightly
> smaller than the piston insides and hold them in place with an o-ring so they
> don't rattle,
>
> Cheers
>
> Dan
>
>
>
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