Scott,
Engineer Tim mentioned the 240Z connection. This leads me to believe the
pads were designed for a Japanese knock off of the original 16P like so
many other parts of the car. Likely built to a metric size that leads to a
slightly undersized retaining pin hole.
I am amazed that apparently no one has ever mentioned it to Porterfield...
Thanks,
Brad
*Brad Eells*
*Chino CA*
*#35 DP 1962 Triumph TR4*
*#76 FP 1969 Triumph Spitfire Mk3*
*1965 Triumph TR4A IRS...for the road!*
On Wed, Mar 7, 2018 at 5:55 PM, Scott Janzen <sjanzen at me.com> wrote:
> I run 16Ps on my GT6 and have used Hawk, Porterfield and my current
> favorite - something that Ted sells, can?t remember the name. In most
> cases in the past few years, I?ve had to egg out the holes for the 1/4?
> pins with a drill.
> Mine typically look like the photo of the new one you have on the right.
> I think the pads are ?shared? with the Datsun 240z and they probably fit
> fine on that car.
>
> On Mar 7, 2018, at 7:21 PM, Brad Eells via Fot <fot at autox.team.net> wrote:
>
> Hello Amici,
>
> Porterfield brake pads in the R4-1 compound were recommended to me. I
> dutifully ordered a set for my Spitfire.
>
> I should mention the car has been upgraded to GT6 brake calipers, the
> venerable Girling 16P. My TR4 and 4A also use the 16P. I have been buying
> brake pads for these cars for over 35 years.
>
> I have had my calipers rebuilt and purchased new retaining pins as well.
> The Porterfield pads arrived. I found 2 issues. The pad compound shape was
> not the same as every pad I have previously purchased or what is shown on
> Porterfield's website. I also found the retaining pin holes in the puck to
> be too small. The puck itself is the same general dimension as my original
> Girling Competition pad and does fit in the caliper but I cannot put the
> pins through the holes.
>
> I simply assumed they had sent pads for the later GT6, the Girling 16PB or
> M16PB that use 3/16" retaining pins.
>
> 8 Emails with manager, Wendy and 1 phone call with engineer Tim and we
> still have a disagreement. I was told they had sold that exact pad "for 25
> years" for my application and no one had ever had a problem or complained.
> When I asked why I couldn't simply have what was shown on their website as
> the pad for the 16P, I was told that was just a general illustration and
> not correct for any specific application.
>
> They have offered to drill out the retaining pin holes to fit my pins. I
> am honestly disappointed that I simply can't have what fits out of the box
> and to have to argue the point back and forth through multiple Emails and a
> terse phone call.
>
> So, my questions to those of you running a 16P (late TR3 through early TR6
> and GT6 1968-72 along with many other British applications) are:
>
> 1. Are you using Porterfield pads in your calipers?
>
> 2. Have you found them to fit the standard 1/4" retaining pin?
>
> 3. If you have found them to not fit the pins, are you drilling them out
> yourself?
>
> 4. Does the difference in pad shape concern you at all (photo attached)?
>
> 5. If not Porterfield, then what are you using? Without divulging any
> speed secrets, of course...
>
> I'm close enough to their facility that I can appear there with my pins,
> pads and calipers to prove what they disbelieve...it just shouldn't have to
> come to that with a reputable company from my view...
>
> Your thoughts and experience are appreciated.
>
> <ap1142008_03_24_10_51_45.jpg>
>
> <IMG_2858.jpg>
> ??
>
> Thanks!
>
>
> *Brad Eells*
> *Chino CA*
> *#35 DP 1962 Triumph TR4*
> *#76 FP 1969 Triumph Spitfire Mk3*
> *1965 Triumph TR4A IRS...for the road!*
>
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>
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