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Andrew,
I presume they are sticking closed, not open?
I've seen some where the brass seat has a sharp edge that grabs the viton,
locking it shut.
I take a small center drill and break the sharp edge by hand. That seems
to help.
3 to 4 psi is plenty high enough. I run closer to 2 psi on mine.
Jason
On Sat, May 25, 2024, 9:59=E2=80=AFAM Andrew Devenish via Fot <fot@autox.te=
am.net>
wrote:
> Hi All, am having a little trouble with the needle/seat in my SU HS4 usin=
g
> the AM viton tipped parts from Moss. Using pressure 3-4 PSI (running) the=
y
> have a quickly (< 1 hour use, but a lot of assembly/disassembly) shown a
> visible line, and are now sticking. Is there a recommended source for the=
se
> parts ? I see 070 and 096 bore parts offered - which is considered best
> for HS4 on a race 1300 ?
> Should I be running higher fuel pressure ?
>
> Thank you,
> Andrew Devenish
>
> Sent from my iPad
>
> > On May 23, 2024, at 5:34=E2=80=AFPM, Barr, Scott via Fot <fot@autox.tea=
m.net>
> wrote:
> >
> > =EF=BB=BFI loved the Carbotech pads when I was using them on my GT6 for=
track
> days. I never had the odd wear problems that have been described. I
> always used the Hawk Blues on my Spitfire racer and liked those as well,
> though they didn't have to deal with the same heat as was generated by my
> GT6 brakes at Blackhawk. The Hawk Blues I use on my Spec Racer Ford also
> work really well and stand up to enough heat to turn the rotors blue. If
> you're unhappy with the Carbotech pads, the Hawk Blues are a good option,
> in my opinion.
> >
> > Scott (B.)
> >
> >
> > -----Original Message-----
> > From: Fot <fot-bounces@autox.team.net> On Behalf Of Scott Janzen via Fo=
t
> > Sent: Thursday, May 23, 2024 4:02 PM
> > To: finishing Touch <fintouch@ptd.net>
> > Cc: Mark Cook via Fot <fot@autox.team.net>
> > Subject: Re: [Fot] TR6 Porterfield R-4 Rear Brake Shoes - Carbotech
> relining
> >
> > I agree. I get the pre-heated ones too. Carbotech stops as well or
> better, and last longer than any other pads I=E2=80=99ve tried, and I=E2=
=80=99ve tried
> quite a few.
> > Sent from my iPhone
> >
> >> On May 23, 2024, at 4:10=E2=80=AFPM, finishing Touch via Fot <
> fot@autox.team.net> wrote:
> >>
> >> =EF=BB=BFI'm on my 3rd set of Carbotech front pads for my TR6 race car=
and
> never had any issues....I do spend the extra $ and have them pre-bedded.
> >>
> >> Mike Kurtz
> >> #51 TR6
> >>
> >>
> >>
> >> _______________________________________________
> >> fot@autox.team.net
> >>
> >> http://www.fot-racing.com/
> >>
> >> Donate: http://www.team.net/donate.html
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> http://www.team.net/pipermail/fot
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> >>
> >>
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> > fot@autox.team.net
> >
> > http://www.fot-racing.com/
> >
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> >
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> >
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> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
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>
>
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<div dir=3D"auto"><div>Andrew,<div dir=3D"auto"><br></div><div dir=3D"auto"=
>I presume they are sticking closed, not open?</div><div dir=3D"auto"><br><=
/div><div dir=3D"auto">I've seen some where the brass seat has a sharp =
edge that grabs the viton, locking it shut.=C2=A0</div><div dir=3D"auto"><b=
r></div><div dir=3D"auto">I take a small center drill and break the sharp e=
dge by hand.=C2=A0 =C2=A0That seems to help.=C2=A0</div><div dir=3D"auto"><=
br></div><div dir=3D"auto">3 to 4 psi is plenty high enough.=C2=A0 =C2=A0I =
run closer to 2 psi on mine.=C2=A0</div><div dir=3D"auto"><br></div><div di=
r=3D"auto">Jason=C2=A0</div><br><br><div class=3D"gmail_quote"><div dir=3D"=
ltr" class=3D"gmail_attr">On Sat, May 25, 2024, 9:59=E2=80=AFAM Andrew Deve=
nish via Fot <<a href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</=
a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 =
0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi All, am having a l=
ittle trouble with the needle/seat in my SU HS4 using the AM viton tipped p=
arts from Moss. Using pressure 3-4 PSI (running) they have a quickly (< =
1 hour use, but a lot of assembly/disassembly) shown a visible line, and ar=
e now sticking. Is there a recommended source for these parts ?=C2=A0 =C2=
=A0I see 070 and 096 bore parts offered - which is considered best for HS4 =
on a race 1300 ?<br>
Should I be running higher fuel pressure ?<br>
<br>
Thank you,<br>
=C2=A0 =C2=A0 =C2=A0 Andrew Devenish<br>
<br>
Sent from my iPad<br>
<br>
> On May 23, 2024, at 5:34=E2=80=AFPM, Barr, Scott via Fot <<a href=
=3D"mailto:fot@autox.team.net"; target=3D"_blank" rel=3D"noreferrer">fot@aut=
ox.team.net</a>> wrote:<br>
><br>
> =EF=BB=BFI loved the Carbotech pads when I was using them on my GT6 fo=
r track days.=C2=A0 I never had the odd wear problems that have been descri=
bed.=C2=A0 I always used the Hawk Blues on my Spitfire racer and liked thos=
e as well, though they didn't have to deal with the same heat as was ge=
nerated by my GT6 brakes at Blackhawk.=C2=A0 The Hawk Blues I use on my Spe=
c Racer Ford also work really well and stand up to enough heat to turn the =
rotors blue.=C2=A0 If you're unhappy with the Carbotech pads, the Hawk =
Blues are a good option, in my opinion.<br>
><br>
> Scott (B.)<br>
><br>
><br>
> -----Original Message-----<br>
> From: Fot <<a href=3D"mailto:fot-bounces@autox.team.net"; target=3D"=
_blank" rel=3D"noreferrer">fot-bounces@autox.team.net</a>> On Behalf Of =
Scott Janzen via Fot<br>
> Sent: Thursday, May 23, 2024 4:02 PM<br>
> To: finishing Touch <<a href=3D"mailto:fintouch@ptd.net"; target=3D"=
_blank" rel=3D"noreferrer">fintouch@ptd.net</a>><br>
> Cc: Mark Cook via Fot <<a href=3D"mailto:fot@autox.team.net"; target=
=3D"_blank" rel=3D"noreferrer">fot@autox.team.net</a>><br>
> Subject: Re: [Fot] TR6 Porterfield R-4 Rear Brake Shoes - Carbotech re=
lining<br>
><br>
> I agree. I get the pre-heated ones too. Carbotech stops as well or bet=
ter, and last longer than any other pads I=E2=80=99ve tried, and I=E2=80=99=
ve tried quite a few.<br>
> Sent from my iPhone<br>
><br>
>> On May 23, 2024, at 4:10=E2=80=AFPM, finishing Touch via Fot <<=
a href=3D"mailto:fot@autox.team.net"; target=3D"_blank" rel=3D"noreferrer">f=
ot@autox.team.net</a>> wrote:<br>
>><br>
>> =EF=BB=BFI'm on my 3rd set of Carbotech front pads for my TR6 =
race car and never had any issues....I do spend the extra $ and have them p=
re-bedded.<br>
>><br>
>> Mike Kurtz<br>
>> #51 TR6<br>
>><br>
>><br>
>><br>
>> _______________________________________________<br>
>> <a href=3D"mailto:fot@autox.team.net"; target=3D"_blank" rel=3D"nor=
eferrer">fot@autox.team.net</a><br>
>><br>
>> <a href=3D"http://www.fot-racing.com/"; rel=3D"noreferrer noreferre=
r" target=3D"_blank">http://www.fot-racing.com/</a><br>
>><br>
>> Donate: <a href=3D"http://www.team.net/donate.html"; rel=3D"norefer=
rer noreferrer" target=3D"_blank">http://www.team.net/donate.html</a><br>
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</blockquote></div></div></div>
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