[DeTomaso] Stock brake calibers & other musings

[eb0711 at kolumbus.fi]

Have been driving around with the rebuilt stock brakes with Porterfield 
pads. I appreciate this may not be greatest news, but I've got to admit 
I'm surprised how well it brakes. Not sure how good thin, stock style, 
rotors are for track use, but I really like what I got with small 
investment and elbow grease.

-Janne

4/30/2013 1:12 PM, eb0711 at kolumbus.fi kirjoitti:
> I rebuilt my stock front brake calibers recently and took them fully
> apart while on that. I'm sure many know, but thought I'd share for the
> benefit of other newbies:
>
> - Calibers seem like a decently nice design with big and little pistons,
> with some oddities in fluid distribution by strange tubing arrangement.
> - Outer pistons are individually at a dead end, meaning the fluid will
> not change there, when you bleed them just for changing the fluid. Would
> really need to squeeze the outer pistons to the bottom to get most of
> the old fluid out from there.
> - Changing rotors it's important to have the rotor and hub mounting
> surfaces very clean and make sure the rotor is perfectly seated against
> the hub. Otherwise the rotor will wobble and grab the pads at some point
> of rotation. Easy to be sloppy here. :)
> - Only way to use thicker ventilated rotors with stock calibers would be
> to build a spacer to fit between caliber halves and use longer bolts. I
> wonder if someone already makes them?
> - Noticed also that the Porterfield pads have 1mm thicker (~20%) steel
> backing plates than stock pads. So it's not just the compound, but
> stiffness and (maybe?) heat handling improvement.
>
> -Janne
>
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