I can?t think of a pad I?ve put into any of my British cars that I didn?t have
to modify?either a little or a lot. Generally grinding some part of the backing
plate to make the pad fit or engage the disk properly. Probably Porterfield
doesn?t know this can occasionally be a problem because no one bothered to tell
them over the last 25 years?they just did what was necessary to make the pads
work.
> On Mar 7, 2018, at 2:21 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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>
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