[DeTomaso] Replaced rear brake pads, was Re: Porterfield rear brake pads

[Asa Jay Laughton]

I'm guessing they re-lined them like that in order to allow you to 
trim-to-fit.

Asa  Jay

Asa Jay Laughton - W7TSC, MSgt, USAFR, Retired
&  Shelley Marie
Spokane, WA
******************************
http://www.racingagainstautism.com
http://www.teampanteraracing.com
http://facebook.com/racingagainstautism


On 12/1/2015 5:08 PM, Guido deTomaso wrote:
>     That's kinda interesting.
>     What I discovered today was, the friction material on my re-lined
>     Porterfield pads was too long.  Not too thick in the wear direction,
>     but too long in the disc circumference direction.  So on the inboard
>     pad, they got wedged in to the caliper body very tight.  Took hammer
>     blows to install, I had to admit to myself those pads would likely
>     stick.
>     So took them out, very difficult since they were wedged in so tight,
>     sanded the ends down, avoiding sanding the metal backing plates, tried
>     to only sand the friction material.  Once sanded, they dropped in
>     easily.
>     The stock pads, the friction material is slightly shorter than the
>     metal backing plate ... something to be learned there.
>     GD
>       __________________________________________________________________
>
>     From: Garth Rodericks<garth_rodericks at yahoo.com>
>     To: "guido_detomaso at prodigy.net"<guido_detomaso at prodigy.net>; DeTomaso
>     Mail List<detomaso at poca.com>
>     Sent: Monday, November 30, 2015 11:02 AM
>     Subject: Replaced rear brake pads, was Re: Porterfield rear brake pads
>     The problem I had after installing my new Porterfield pads years ago
>     was the caliper pistons on the rear right wheel got stuck in their
>     bores because of all the gunk/varnish that built up in there there over
>     the years - it had been a long time since the pistons were pushed that
>     far back into their bores. Calipers released after a few good whacks
>     with the handle of a screwdriver as well as letting things cool down -
>     don't know which really solved the problem, but they haven't stuck
>     since.
>     --- Original Message ---
> Well, yesterday I replaced the rear pads on one side, ran out of daylight before
>   I could do the other side.
> Wasn't too difficult, had never tampered with that aspect of the car before, I s
> uspect no one else had either.
> Didn't realize / had forgotten that a piston pokes out both sides of the caliper
>   cylinder ... wasn't too difficult to turn the slotted piston 45 deg., but wasn'
> t easy either.  Wound up cutting the blade off a Craftsman square-shank screwdri
> ver to make a "special tool".  Piston retracted easily once turned 45 and with t
> he bleeder open.
> The metal frame however, that pushes the outboard pad into the disc, was difficu
> lt to slide outboard to accommodate the new, much thicker pad.  Took infinity of
>   dead-blow hammer strikes.
> Old pads pretty thin at 75K miles,  I suppose the p-valve is working or did work
>   at one time.
> Wondering now how often the seals fail after a pad change, from all the turning
> and sliding of the piston.  Are rebuild seals and parts still available?
> Thanks,
> GD
>
>
>
> _______________________________________________
>
> Detomaso Forum Managed by POCA
> Posted emails must not exceed 1.5 Megabytes
> DeTomaso mailing list
> DeTomaso at poca.com
> http://poca.com/mailman/listinfo/detomaso_poca.com
>
> To manage your subscription (change email address, unsubscribe, etc.) use the links above.
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2016.0.7227 / Virus Database: 4477/11099 - Release Date: 12/01/15