--===============1460569017807292048==
--00000000000085645f05e20f2458
Content-Transfer-Encoding: quoted-printable
i have many decades of race experience and specifically with the Toyota T50
and W57-58 gearboxes since the late 80's
Both gearboxes were fragile from new, and the syncros were barely large
enough to handle the gear mass . Lots of wear on operating forks and syncro
outer hubs. The W series was absurdly heavy for anything buy a large car
when the T50 was built with great care and attention to detail, they would
handle up to about 200hp engines, provided full power rpm was under about
9000. above that, the bearing sizes etc all showed the weaknesses. above
about 175 HP, the bolt-together cases, started to deflect and we had to
introduce reinforcing straps
thru all this we experimented with various oils, and did not find a
'standout", BUT, in all cases , the various synthetic oils all handled the
temperatures best with the least degradation of the oil
more broadly, we have learned that selecting an oil requires FACTS about
operating temperatures. The T50 in race applications can easily get to
130-150C and in nearly all cases, conventional 80 or 90 weight gear oils
are starting to fall apart (lab testing needed to prove this). The more
modern synthetic oils can generally handle the higher temps better. Once
you have FACTS about temperatures, then start looking at the kinematic
viscosity of the oils at the temps you are finding.
in some cases, its a compromise between high temperature stability and cold
temperature shifting. it may not be sold in USA, but ELF supply a race
specific gear oil that is well and truly proven to solve this.
in some race categories we were permitted to use a transmission oil pump
and cooler, and this expanded the choice of oils and grades, albeit at the
expense of extra weight and complications. in a few cases we deliberately
built cars below homologated race weight so we could add diff and trans oil
coolers and bring the weight back up to minimum. perhaps an overkill for
race TR's??
in contrast, i have nothing good to say at all about the various Redline
"shockproof" oils and intending users should research them carefully
Terry
Australia
On Thu, Jun 23, 2022 at 5:51 AM Philip Gott via Fot <fot@autox.team.net>
wrote:
> Ditto on the MT90 in my W-58.
>
> Sent from my iPhone
>
> > On Jun 21, 2022, at 11:26 PM, DAVE HOGYE via Fot <fot@autox.team.net>
> wrote:
> >
> > =EF=BB=BFSame as Brad.
> > Dave H.
> >> On 06/21/2022 7:00 PM Brad Eells via Fot <fot@autox.team.net> wrote:
> >>
> >>
> >> Redline MT-90 GL-4 for the gearbox.
> >>
> >> Redline Lightweight Shockproof for the diff.
> >>
> >> Brad Eells
> >> Sent from my iPhone
> >>
> >>>> On Jun 21, 2022, at 6:56 PM, McKearn McKearn via Fot <
> fot@autox.team.net> wrote:
> >>>
> >>> =EF=BB=BF
> >>> Hi Friends.
> >>> I am looking for recommendations as to which synthetic gear lube to
> use in my GT6? Transmission is Toyota T50, rear end is GT6 ,would like t=
o
> convert both to synthetic.
> >>> Thanks. P.J.
> >>> _______________________________________________
> >>> fot@autox.team.net
> >>>
> >>> http://www.fot-racing.com
> >>>
> >>> Donate: http://www.team.net/donate.html
> >>> Archive: http://autox.team.net/archive
> http://www.team.net/pipermail/fot
> >>> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/fot/tr4abrad@gmail.com
> >>>
> >>>
> >> _______________________________________________
> >> fot@autox.team.net
> >>
> >> http://www.fot-racing.com
> >>
> >> Donate: http://www.team.net/donate.html
> >> Archive: http://autox.team.net/archive
> http://www.team.net/pipermail/fot
> >> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/fot/dlhogye@comcast.net
> > _______________________________________________
> > fot@autox.team.net
> >
> > http://www.fot-racing.com
> >
> > Donate: http://www.team.net/donate.html
> > Archive: http://autox.team.net/archive http://www.team.net/pipermail/fo=
t
> > Unsubscribe/Manage:
> http://autox.team.net/mailman/options/fot/vfracing@aol.com
> >
> >
>
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage <http://www.team.net/pipermail/fotUnsubscribe/Manage>:
> http://autox.team.net/mailman/options/fot/enquiries@roadandtrack.net.au
>
>
>
--00000000000085645f05e20f2458
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">i have many decades of race experience and specifically wi=
th the Toyota T50 and W57-58 gearboxes since the late 80's<div><br></di=
v><div>Both gearboxes were fragile from new, and the syncros were barely la=
rge enough to handle the gear mass . Lots of wear on operating forks and sy=
ncro outer hubs. The W series was absurdly heavy for anything buy a large c=
ar</div><div><br></div><div>when=C2=A0the=C2=A0T50 was built with great car=
e and attention to detail, they would handle=C2=A0up to about 200hp=C2=A0en=
gines, provided full power rpm was under about 9000. above that, the bearin=
g sizes etc all showed the weaknesses.=C2=A0 above about 175 HP, the bolt-t=
ogether cases, started to deflect and we had to introduce=C2=A0reinforcing =
straps</div><div><br></div><div>thru all this we experimented with various =
oils, and did not find a 'standout", BUT, in all cases , the vario=
us synthetic oils all handled the temperatures=C2=A0best with the least deg=
radation of the oil=C2=A0</div><div><br></div><div>more broadly, we have le=
arned that selecting an oil requires=C2=A0FACTS about operating temperature=
s. The T50 in race applications can easily get to 130-150C and in nearly=C2=
=A0all cases, conventional 80 or 90 weight gear oils are starting to fall a=
part=C2=A0 (lab testing needed to prove this). The more modern synthetic oi=
ls can generally=C2=A0handle the higher temps better. Once you have FACTS a=
bout temperatures, then start looking at the kinematic viscosity=C2=A0of th=
e oils at the temps you are finding.=C2=A0</div><div><br></div><div>in some=
cases, its a compromise between high temperature stability and cold temper=
ature shifting. it may not be sold=C2=A0in USA, but ELF supply a race speci=
fic gear oil that is well and truly proven to solve this.=C2=A0</div><div><=
br></div><div>in some race categories we were permitted to use a transmissi=
on oil pump and cooler, and this expanded the choice of oils and grades, al=
beit at the expense of extra weight and complications. in a few cases we de=
liberately built cars below homologated race weight so we could add diff an=
d trans oil coolers and bring the weight back up to minimum. perhaps an ove=
rkill for race TR's??</div><div><br></div><div>in contrast, i have noth=
ing=C2=A0good to say at all about the various Redline "shockproof"=
; oils and intending users should research them carefully</div><div><br></d=
iv><div>Terry</div><div>Australia</div><div><div><div dir=3D"ltr" class=3D"=
gmail_signature" data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"l=
tr"><div><br></div></div></div></div></div></div></div></div></div><br></di=
v></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr=
">On Thu, Jun 23, 2022 at 5:51 AM Philip Gott 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:0px 0px 0px 0.8ex;border-left:1px so=
lid rgb(204,204,204);padding-left:1ex">Ditto on the MT90 in my W-58.<br>
<br>
Sent from my iPhone<br>
<br>
> On Jun 21, 2022, at 11:26 PM, DAVE HOGYE via Fot <<a href=3D"mailto=
:fot@autox.team.net" target=3D"_blank">fot@autox.team.net</a>> wrote:<br=
>
> <br>
> =EF=BB=BFSame as Brad.<br>
> Dave H.<br>
>> On 06/21/2022 7:00 PM Brad Eells via Fot <<a href=3D"mailto:fot=
@autox.team.net" target=3D"_blank">fot@autox.team.net</a>> wrote:<br>
>> <br>
>> <br>
>> Redline MT-90 GL-4 for the gearbox. <br>
>> <br>
>> Redline Lightweight Shockproof for the diff.<br>
>> <br>
>> Brad Eells<br>
>> Sent from my iPhone<br>
>> <br>
>>>> On Jun 21, 2022, at 6:56 PM, McKearn McKearn via Fot <<=
a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">fot@autox.team.net</=
a>> wrote:<br>
>>> <br>
>>> =EF=BB=BF<br>
>>> Hi Friends.<br>
>>>=C2=A0 I am looking for recommendations as to which synthetic g=
ear lube to use in my GT6?=C2=A0 Transmission is Toyota T50, rear end is GT=
6 ,would like to convert both to synthetic.=C2=A0 <br>
>>> Thanks. P.J.<br>
>>> _______________________________________________<br>
>>> <a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">fot@au=
tox.team.net</a><br>
>>> <br>
>>> <a href=3D"http://www.fot-racing.com"; rel=3D"noreferrer" targe=
t=3D"_blank">http://www.fot-racing.com</a><br>
>>> <br>
>>> Donate: <a href=3D"http://www.team.net/donate.html"; rel=3D"nor=
eferrer" target=3D"_blank">http://www.team.net/donate.html</a><br>
>>> Archive: <a href=3D"http://autox.team.net/archive"; rel=3D"nore=
ferrer" target=3D"_blank">http://autox.team.net/archive</a> <a href=3D"http=
://www.team.net/pipermail/fot" rel=3D"noreferrer" target=3D"_blank">http://=
www.team.net/pipermail/fot</a><br>
>>> Unsubscribe/Manage: <a href=3D"http://autox.team.net/mailman/o=
ptions/fot/tr4abrad@gmail.com" rel=3D"noreferrer" target=3D"_blank">http://=
autox.team.net/mailman/options/fot/tr4abrad@gmail.com</a><br>
>>> <br>
>>> <br>
>> _______________________________________________<br>
>> <a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">fot@autox.=
team.net</a><br>
>> <br>
>> <a href=3D"http://www.fot-racing.com"; rel=3D"noreferrer" 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" target=3D"_blank">http://www.team.net/donate.html</a><br>
>> Archive: <a href=3D"http://autox.team.net/archive"; rel=3D"noreferr=
er" target=3D"_blank">http://autox.team.net/archive</a> <a href=3D"http://w=
ww.team.net/pipermail/fot" rel=3D"noreferrer" target=3D"_blank">http://www.=
team.net/pipermail/fot</a><br>
>> Unsubscribe/Manage: <a href=3D"http://autox.team.net/mailman/optio=
ns/fot/dlhogye@comcast.net" rel=3D"noreferrer" target=3D"_blank">http://aut=
ox.team.net/mailman/options/fot/dlhogye@comcast.net</a><br>
> _______________________________________________<br>
> <a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">fot@autox.team=
.net</a><br>
> <br>
> <a href=3D"http://www.fot-racing.com"; rel=3D"noreferrer" target=3D"_bl=
ank">http://www.fot-racing.com</a><br>
> <br>
> Donate: <a href=3D"http://www.team.net/donate.html"; rel=3D"noreferrer"=
target=3D"_blank">http://www.team.net/donate.html</a><br>
> Archive: <a href=3D"http://autox.team.net/archive"; rel=3D"noreferrer" =
target=3D"_blank">http://autox.team.net/archive</a> <a href=3D"http://www.t=
eam.net/pipermail/fot" rel=3D"noreferrer" target=3D"_blank">http://www.team=
.net/pipermail/fot</a><br>
> Unsubscribe/Manage: <a href=3D"http://autox.team.net/mailman/options/f=
ot/vfracing@aol.com" rel=3D"noreferrer" target=3D"_blank">http://autox.team=
.net/mailman/options/fot/vfracing@aol.com</a><br>
> <br>
> <br>
<br>
_______________________________________________<br>
<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">fot@autox.team.net<=
/a><br>
<br>
<a href=3D"http://www.fot-racing.com"; rel=3D"noreferrer" target=3D"_blank">=
http://www.fot-racing.com</a><br>
<br>
et=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://autox.team.net/archive"; rel=3D"noreferrer" targe=
t=3D"_blank">http://autox.team.net/archive</a> <a href=3D"http://www.team.n=
et/pipermail/fotUnsubscribe/Manage" rel=3D"noreferrer" target=3D"_blank">ht=
tp://www.team.net/pipermail/fot<br>
t/enquiries@roadandtrack.net.au" rel=3D"noreferrer" target=3D"_blank">http:=
//autox.team.net/mailman/options/fot/enquiries@roadandtrack.net.au</a><br>
<br>
<br>
</blockquote></div>
--00000000000085645f05e20f2458--
--===============1460569017807292048==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
--===============1460569017807292048==--
|