[DeTomaso] Stock brake calibers & other musings

dave londry davel at emspace.com
Wed May 15 18:48:45 EDT 2013


This was my LPI invoice Freddy
PORT AP 63 (R4S) Porterfield R4S Performance Street Pads,
              DeTomaso Pantera, Front 1 118.00 118.00T
PORT GD535 (R4S) 1 Porterfield R4S Performance Street pad Rear 68.00 68.00T
dave

On 15/05/2013 3:03 PM, Freddy Henningsen wrote:
> Does anyone have the correct part numbers for Porterfield brake pads to the
> original modified calipers? and where you buy them?
>
> Freddy
> 7207
>
>
> ----- Original Message -----
> From: <eb0711 at kolumbus.fi>
> To: <detomaso at poca.com>
> Sent: Tuesday, May 14, 2013 9:36 AM
> Subject: Re: [DeTomaso] Stock brake calibers & other musings
>
>
>> 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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