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Putting a car on and off a trailer is what winches are made for. =
That=E2=80=99s the stuff that buggers clutches also.=20
Russ
=20
From: Fot [mailto:fot-bounces@autox.team.net] On Behalf Of McKearn =
McKearn
Sent: Saturday, October 31, 2015 6:45 PM
To: Duncan Charlton
Cc: Mike Piggot (new); FOT list
Subject: Re: [Fot] Six cylinder cams
=20
I can tell you that I already have a GT6 with a good flexible power band =
and good reliability. It lacks quickness however, due in part to the TR6 =
engine which is not highly tuned and I'm sure the gearing could be =
better (3.27 rearend-Toyota T50 trans.)( Good for the highway.) My old =
car is pretty much to the point where I don't want to do anything more =
to it so I want to move on to another project. This time I want to =
build a car that snorts . I do however need to put it on and off the =
trailer and I'm not thrilled about breaking parts with max. RPMs so I =
can't afford to go all out. I'm looking for quickness through the gears =
and good handling.=20
P.J.=20
=20
On Sat, Oct 31, 2015 at 3:43 PM, Duncan Charlton =
<duncan.charlton54@gmail.com> wrote:
Larry=E2=80=99s comments make me wonder the precise intended purpose of =
the engine mentioned by the original poster. =E2=80=9CTrack =
days=E2=80=9D might mean different things to different people. Does P. =
J. want a good flexible power band, or does he need an ultimate dyno =
horsepower figure? Does the motor have the gear set to be able to take =
advantage of an engine with very little low-end torque? How high among =
his priorities is the ability to be able to drive the car back on the =
trailer at the end of every track weekend? Lack of sponsorship and cash =
prizes mean that I must find the setup that maximizes the fun/cost =
ratio.
Duncan
> On Oct 31, 2015, at 1:34 PM, Larry Young <cartravel@pobox.com> wrote:
>
> That is an interesting article, but only speaks to one side of the =
issue. I always say that you want to pick an intake duration for an RPM =
range that you're willing and able to turn. We all know what happens to =
a stock TR4 crank which sees >6,000 on a regular basis. Some guys want =
a cam good beyond 7,000, but they are just not willing to push it that =
far. Nowadays I'm more of a street car guy, but still like to have =
power. I don't believe the choices should be to do nothing or go all =
the way to race specs. From 1968 on Triumphs were severely detuned to =
pass emissions. Compression ratio and duration and hence cam overlap at =
TDC were reduced. For example, the early TR250/6 had 193 degrees =
duration (measured at 0.050), while the TR4 was about 215 and the early =
PI TR5/6 was 226. It seems crazy to rebuild a street car of this era to =
the original specs. Bumping the compression ratio by a point and =
increasing the duration to something like 210-215 will make the engine =
the way it would have been without emission restrictions. I would not =
feel guilty about polluting the planet, since most of these cars see few =
miles annually and most of the other pollution controls (e.g. ignition =
retard) probably quit working years ago.
> - Larry
>
> On 10/29/2015 7:25 AM, Duncan Charlton wrote:
>> Cam specs and static CR are interactive. This will give you a =
rundown if you are not already knowledgeable about this subject:
>>
>> =
http://www.crankshaftcoalition.com/wiki/Cam_and_compression_ratio_compati=
bility
>>
>> Duncan
>> (Texas)
>>
>>
>
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/duncan.charlton54@gmail.com
>
>
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
http://autox.team.net/mailman/options/fot/mckearn2@gmail.com
=20
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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Putting a car on and off a trailer is what winches are made for. =
That=E2=80=99s the stuff that buggers clutches also. =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Russ<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
Fot [mailto:fot-bounces@autox.team.net] <b>On Behalf Of </b>McKearn =
McKearn<br><b>Sent:</b> Saturday, October 31, 2015 6:45 PM<br><b>To:</b> =
Duncan Charlton<br><b>Cc:</b> Mike Piggot (new); FOT =
list<br><b>Subject:</b> Re: [Fot] Six cylinder =
cams<o:p></o:p></span></p></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p class=3DMsoNormal>I =
can tell you that I already have a GT6 with a good flexible power band =
and good reliability. It lacks quickness however, due in part =
to the TR6 engine which is not highly tuned and I'm sure =
the gearing could be better (3.27 rearend-Toyota T50 trans.)( Good for =
the highway.) My old car is pretty much to the point where I =
don't want to do anything more to it so I want to move on to =
another project. This time I want to build a car that =
snorts . I do however need to put it on and off the trailer and I'm not =
thrilled about breaking parts with max. RPMs so I can't afford to go all =
out. I'm looking for quickness through the gears and good =
handling. <o:p></o:p></p></div><div><p =
class=3DMsoNormal> &=
nbsp; &n=
bsp; &nb=
sp; &nbs=
p; =
P.J. <o:p></o:p></p></div></div><div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>On Sat, =
Oct 31, 2015 at 3:43 PM, Duncan Charlton <<a =
href=3D"mailto:duncan.charlton54@gmail.com"; =
target=3D"_blank">duncan.charlton54@gmail.com</a>> =
wrote:<o:p></o:p></p><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>Larry=E2=80=99s comments make me wonder =
the precise intended purpose of the engine mentioned by the original =
poster. =E2=80=9CTrack days=E2=80=9D might mean different things =
to different people. Does P. J. want a good flexible power band, =
or does he need an ultimate dyno horsepower figure? Does the motor =
have the gear set to be able to take advantage of an engine with very =
little low-end torque? How high among his priorities is the ability to =
be able to drive the car back on the trailer at the end of every track =
weekend? Lack of sponsorship and cash prizes mean that I must find =
the setup that maximizes the fun/cost =
ratio.<br><br>Duncan<br><br><br>> On Oct 31, 2015, at 1:34 PM, Larry =
Young <<a =
href=3D"mailto:cartravel@pobox.com";>cartravel@pobox.com</a>> =
wrote:<br>><br>> That is an interesting article, but only speaks =
to one side of the issue. I always say that you want to pick an =
intake duration for an RPM range that you're willing and able to turn. =
We all know what happens to a stock TR4 crank which sees >6,000 on a =
regular basis. Some guys want a cam good beyond 7,000, but they =
are just not willing to push it that far. Nowadays I'm more of a street =
car guy, but still like to have power. I don't believe the choices =
should be to do nothing or go all the way to race specs. From 1968 =
on Triumphs were severely detuned to pass emissions. Compression =
ratio and duration and hence cam overlap at TDC were reduced. For =
example, the early TR250/6 had 193 degrees duration (measured at 0.050), =
while the TR4 was about 215 and the early PI TR5/6 was 226. It seems =
crazy to rebuild a street car of this era to the original specs. =
Bumping the compression ratio by a point and increasing the duration to =
something like 210-215 will make the engine the way it would have been =
without emission restrictions. I would not feel guilty about =
polluting the planet, since most of these cars see few miles annually =
and most of the other pollution controls (e.g. ignition retard) probably =
quit working years ago.<br>> - Larry<br>><br>> On 10/29/2015 =
7:25 AM, Duncan Charlton wrote:<br>>> Cam specs and static CR are =
interactive. This will give you a rundown if you are not already =
knowledgeable about this subject:<br>>><br>>> <a =
href=3D"http://www.crankshaftcoalition.com/wiki/Cam_and_compression_ratio=
_compatibility" =
target=3D"_blank">http://www.crankshaftcoalition.com/wiki/Cam_and_compres=
sion_ratio_compatibility</a><br>>><br>>> Duncan<br>>> =
(Texas)<br>>><br>>><br>><br>> =
_______________________________________________<br>> <a =
href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a><br>><br>>=
<a href=3D"http://www.fot-racing.com"; =
target=3D"_blank">http://www.fot-racing.com</a><br>><br>> Donate: =
<a href=3D"http://www.team.net/donate.html"; =
target=3D"_blank">http://www.team.net/donate.html</a><br>> Archive: =
<a href=3D"http://www.team.net/archive"; =
target=3D"_blank">http://www.team.net/archive</a><br>> Forums: <a =
href=3D"http://www.team.net/forums"; =
target=3D"_blank">http://www.team.net/forums</a><br>> =
href=3D"http://autox.team.net/mailman/options/fot/duncan.charlton54@gmail=
.com" =
target=3D"_blank">http://autox.team.net/mailman/options/fot/duncan.charlt=
on54@gmail.com</a><br>><br>><br><br>_______________________________=
________________<br><a =
href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a><br><br><a =
href=3D"http://www.fot-racing.com"; =
target=3D"_blank">http://www.fot-racing.com</a><br><br>Donate: <a =
href=3D"http://www.team.net/donate.html"; =
target=3D"_blank">http://www.team.net/donate.html</a><br>Archive: <a =
href=3D"http://www.team.net/archive"; =
target=3D"_blank">http://www.team.net/archive</a><br>Forums: <a =
href=3D"http://www.team.net/forums"; =
target=3D"_blank">http://www.team.net/forums</a><br>Unsubscribe/Manage: =
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l.com</a><br><br><o:p></o:p></p></div><p =
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Archive: http://www.team.net/archive
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