--===============3465911854966888106==
boundary="----=_Part_777952_1267476867.1573923159524"
------=_Part_777952_1267476867.1573923159524
Content-Transfer-Encoding: quoted-printable
Easy enough to use the linked speed-in-gear RPM calculator to both answer t=
he original questions and model out different scenarios.=C2=A0
https://spicerparts.com/calculators/transmission-ratio-rpm-calculator
-----Original Message-----
From: Theo Smit via Tigers <tigers@autox.team.net>
To: Gary <garywinblad@comcast.net>
Cc: Joel Martin <jmartiniii@yahoo.com>; tigers <tigers@autox.team.net>
Sent: Sat, Nov 16, 2019 8:49 am
Subject: Re: [Tigers] Tiger Differential
Didn't the axle spline count change at some point? So you can do the conver=
sion but there are a few extra tweaks necessary, possibly up to and includi=
ng the installation of new axles.
IIRC most of the period posi conversions were done using a Jaguar different=
ial assembly. Then there is something that sticks in my mind where the orig=
inal ring gear bolts are smaller than what is being used now. So if you're =
using a modern posi unit then you have to use stepped ring gear bolts.
My Tiger has the 3.31 gears (and a Torsen LSD) and it spins at about 3000 R=
PM at 60 MPH, in fourth. The five speed makes it livable but first gear is =
really short. Still need to change it over to the Z ratios.
-Theo
From: "tigers" <tigers@autox.team.net>
To: "Joel Martin" <jmartiniii@yahoo.com>, "tigers" <tigers@autox.team.net>
Sent: Saturday, November 16, 2019 9:16:34 AM
Subject: Re: [Tigers] Tiger Differential
Stock rear end is NOT posi.=C2=A0 It is now called Dana44, same diff as a l=
ot of 4x4 front as well as others.
A normal rear end shop can put posi in if someone didn't do yours before.
Axles, bearings, hubs are unique Tiger.
Stock is about 2450RPM at 60, way too fast unless you have a big cam IMHO.
Big carb, hopped up 289, you probably get 14mpg highway?=C2=A0 Ouch.
I have a stock 5.0L/T-5 wide ratio..=C2=A0 maybe 220HP, 14in wheels =3D195=
0RPM at 70.. NICE.=C2=A0 Like a modern car
MPG > 20 but=C2=A0 not sure..
Good luck,
Gary
=20
=20
On 11/16/2019 8:02 AM, Joel Martin via Tigers wrote:
=20
=20
The manual shows that Tiger rear ends are:=C2=A0 Salisbury hypoid =E2=80=98=
4.HA=E2=80=99 with a 2.88 to 1 ratio.=C2=A0 What does the 4.HA stand for?
=20
My understanding is these are posi traction meaning both wheels are applyin=
g power.
=20
Those of you with 2.88 rear ratio gears, wide ratio 4 speed top loader tran=
smissions, what is your RPM=E2=80=99s in fourth at 50, 60,70 & 80 MPH?=C2=
=A0=20
=20
Those of you running other rear end rations, other factors the same, what a=
re your RPM=E2=80=99s at the same speed and what ratio?
=20
I like to drive my cars and just got back from a 1,263 mile 6 day trip in m=
y original owner 1973 MGB with 229,000 miles on the car.=C2=A0=20
=20
Things to consider:=C2=A0 1966 MK1A with 289 HiPo motor with about 300 HP a=
nd estimated 9.4.1 compression
=20
600 cfm 4 barrel Holley carburetor
=20
Headers with 2.25=E2=80=9D exhaust
=20
15=E2=80=9D wheels running 205\50 x 15 tires
=20
Wide ratio top loader 4 speed transmission
=20
Believe Salisbury posi rear end=20
=20
Closed, open, locked, posi, ratios =E2=80=93 the list is endless.=C2=A0 Wha=
t I am looking for is a very streetable around town and on the highway posi=
rear end ratio that will work well with a good balance between acceleratio=
n for fun and highway cruising.=C2=A0 I am not there yet.=C2=A0 I have the =
acceleration for fun part in place but not the highway cruising (of course =
- avoid highways\interstate).
=20
=20
Data means a lot regarding RPM=E2=80=99s at speeds between 50 to 80 mph.=C2=
=A0 Those of you who have switched ratios, please share your pros and cons.
=20
Thank you for your input.
=20
Regards
=20
Joel Martin
=20
=20
_______________________________________________
tigers@autox.team.net
Archive: http://www.team.net/pipermail/tigers http://autox.team.net/archive
Unsubscribe: http://autox.team.net/mailman/options/tigers/garywinblad@comca=
st.net
=20
=20
=20
_______________________________________________
tigers@autox.team.net
Archive: http://www.team.net/pipermail/tigers http://autox.team.net/archive
Unsubscribe: http://autox.team.net/mailman/options/tigers/tsmit@shaw.ca
_______________________________________________
tigers@autox.team.net
Archive: http://www.team.net/pipermail/tigers http://autox.team.net/archive
Unsubscribe: http://autox.team.net/mailman/options/tigers/mwood24020@aol.co=
m
------=_Part_777952_1267476867.1573923159524
Content-Transfer-Encoding: quoted-printable
<div style=3D"font-size:10pt;font-family:arial,helvetica,sans-serif;color:b=
lack;"><div style=3D"font-family:arial,helvetica,sans-serif;font-size:10pt;=
color:black;">Easy enough to use the linked speed-in-gear RPM calculator to=
both answer the original questions and model out different scenarios. =
;<br><br>https://spicerparts.com/calculators/transmission-ratio-rpm-calcula=
tor<br><br><br><br><br>-----Original Message-----<br>From: Theo Smit via Ti=
gers <tigers@autox.team.net><br>To: Gary <garywinblad@comcast.net&=
gt;<br>Cc: Joel Martin <jmartiniii@yahoo.com>; tigers <tigers@auto=
x.team.net><br>Sent: Sat, Nov 16, 2019 8:49 am<br>Subject: Re: [Tigers] =
Tiger Differential<br><br></div><div id=3D"yiv2561994377"><div><div style=
=3D"font-family:arial, helvetica, sans-serif;font-size:10pt;color:#000000;"=
><div>Didn't the axle spline count change at some point? So you can do the =
conversion but there are a few extra tweaks necessary, possibly up to and i=
ncluding the installation of new axles.</div><div><br clear=3D"none"></div>=
<div>IIRC most of the period posi conversions were done using a Jaguar diff=
erential assembly. Then there is something that sticks in my mind where the=
original ring gear bolts are smaller than what is being used now. So if yo=
u're using a modern posi unit then you have to use stepped ring gear bolts.=
</div><div><br clear=3D"none"></div><div>My Tiger has the 3.31 gears (and a=
Torsen LSD) and it spins at about 3000 RPM at 60 MPH, in fourth. The five =
speed makes it livable but first gear is really short. Still need to change=
it over to the Z ratios.</div><div><br clear=3D"none"></div><div>-Theo</di=
v><div><br clear=3D"none"></div><div><br clear=3D"none"></div><div><br clea=
r=3D"none"></div><div><br clear=3D"none"></div><hr id=3D"yiv2561994377zwchr=
"><div class=3D"yiv2561994377yqt2373198592" id=3D"yiv2561994377yqtfd29402">=
<div><b>From: </b>"tigers" <tigers@autox.team.net><br clear=3D"none">=
<b>To: </b>"Joel Martin" <jmartiniii@yahoo.com>, "tigers" <tigers@=
autox.team.net><br clear=3D"none"><b>Sent: </b>Saturday, November 16, 20=
19 9:16:34 AM<br clear=3D"none"><b>Subject: </b>Re: [Tigers] Tiger Differen=
tial<br clear=3D"none"></div><div><br clear=3D"none"></div></div><div><div =
class=3D"yiv2561994377yqt2373198592" id=3D"yiv2561994377yqtfd86064">Stock r=
ear end is NOT posi. It is now called Dana44, same diff as a
lot of 4x4 front as well as others.<br clear=3D"none">
A normal rear end shop can put posi in if someone didn't do yours
before.<br clear=3D"none">
Axles, bearings, hubs are unique Tiger.<br clear=3D"none">
Stock is about 2450RPM at 60, way too fast unless you have a big cam
IMHO.<br clear=3D"none">
Big carb, hopped up 289, you probably get 14mpg highway? Ouch.<br=
clear=3D"none">
I have a stock 5.0L/T-5 wide ratio.. maybe 220HP, 14in wheels
=3D1950RPM at 70.. NICE. Like a modern car<br clear=3D"none">
MPG > 20 but not sure..<br clear=3D"none">
Good luck,<br clear=3D"none">
Gary<br clear=3D"none">
<br clear=3D"none">
<br clear=3D"none">
<div class=3D"yiv2561994377moz-cite-prefix">On 11/16/2019 8:02 AM, Joel=
Martin via
Tigers wrote:<br clear=3D"none">
</div>
<blockquote>
=20
<div class=3D"yiv2561994377yahoo-style-wrap" style=3D"font-family:gar=
amond, new york, times, serif;font-size:16px;">
<div>
<div>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">The manual shows=
that Tiger
rear ends are:<span> </span>Salisbury hypoid =E2=80=984=
.HA=E2=80=99 with
a 2.88 to 1
ratio.<span> </span>What does the 4.HA stand for?</p>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">My understanding=
is these
are posi traction meaning both
wheels are applying power.</p>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">Those of you wit=
h 2.88 rear
ratio gears, wide ratio 4 speed
top loader transmissions, what is your RPM=E2=80=99s in fourt=
h at
50, 60,70 & 80
MPH?
</p>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">Those of you run=
ning other
rear end rations, other factors
the same, what are your RPM=E2=80=99s at the same speed and w=
hat
ratio?</p>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">I like to drive =
my cars and
just got back from a 1,263 mile
6 day trip in my original owner 1973 MGB with 229,000
miles on the car.
</p>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">Things to consid=
er:<span>
</span>1966 MK1A with 289 HiPo motor with about 300 HP and
estimated 9.4.1 compression</p>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">600 cfm 4 barrel=
Holley
carburetor</p>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">Headers with 2.2=
5=E2=80=9D exhaust</p>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">15=E2=80=9D whee=
ls running 205\50 x
15 tires</p>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">Wide ratio top l=
oader 4
speed transmission</p>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">Believe Salisbur=
y posi rear
end </p>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">Closed, open, lo=
cked, posi,
ratios =E2=80=93 the list is
endless.<span> </span>What I am looking for is a
very streetable around town and on the highway posi rear
end ratio that will
work well with a good balance between acceleration for fun
and highway
cruising.<span> </span>I am not there yet. I have=
the
acceleration for fun part in place but not the highway
cruising (of course - avoid highways\interstate).<br clear=3D=
"none">
</p>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">Data means a lot=
regarding
RPM=E2=80=99s at speeds between 50 to 80
mph.<span> </span>Those of you who have switched
ratios, please share your pros and cons.</p>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">Thank you for yo=
ur input.</p>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">Regards</p>
<p class=3D"yiv2561994377ydpe3a33268MsoNormal">Joel Martin</p>
</div>
<br clear=3D"none">
</div>
</div>
<br clear=3D"none">
<fieldset class=3D"yiv2561994377mimeAttachmentHeader"></fieldset>
<pre class=3D"yiv2561994377moz-quote-pre">___________________________=
____________________
<a class=3D"yiv2561994377moz-txt-link-abbreviated" href=3D"mailto:tigers@au=
tox.team.net" target=3D"_blank" rel=3D"noopener noreferrer" shape=3D"rect" =
ymailto=3D"mailto:tigers@autox.team.net";>tigers@autox.team.net</a>
team.net/donate.html" target=3D"_blank" rel=3D"noopener noreferrer" shape=
=3D"rect">http://www.team.net/donate.html</a>
Archive: <a class=3D"yiv2561994377moz-txt-link-freetext" href=3D"http://www=
.team.net/pipermail/tigers" target=3D"_blank" rel=3D"noopener noreferrer" s=
hape=3D"rect">http://www.team.net/pipermail/tigers</a> <a class=3D"yiv25619=
94377moz-txt-link-freetext" href=3D"http://autox.team.net/archive"; target=
=3D"_blank" rel=3D"noopener noreferrer" shape=3D"rect">http://autox.team.ne=
t/archive</a>
Unsubscribe: <a class=3D"yiv2561994377moz-txt-link-freetext" href=3D"http:/=
/autox.team.net/mailman/options/tigers/garywinblad@comcast.net" target=3D"_=
blank" rel=3D"noopener noreferrer" shape=3D"rect">http://autox.team.net/mai=
lman/options/tigers/garywinblad@comcast.net</a>
</pre>
</blockquote>
<br clear=3D"none">
=20
<br clear=3D"none">_______________________________________________<br clear=
=3D"none"><br clear=3D"none">tigers@autox.team.net<br clear=3D"none"><br cl=
ear=3D"none">Donate: http://www.team.net/donate.html<br clear=3D"none">Arch=
ive: http://www.team.net/pipermail/tigers http://autox.team.net/archive</di=
v><br clear=3D"none"><br clear=3D"none">Unsubscribe: http://autox.team.net/=
mailman/options/tigers/tsmit@shaw.ca<div class=3D"yiv2561994377yqt237319859=
2" id=3D"yiv2561994377yqtfd29169"><br clear=3D"none"></div></div></div></di=
v></div><div class=3D"yqt2373198592" id=3D"yqtfd60437">____________________=
___________________________<br clear=3D"none"><br clear=3D"none"><a href=3D=
"mailto:tigers@autox.team.net"; rel=3D"noopener noreferrer" shape=3D"rect" y=
mailto=3D"mailto:tigers@autox.team.net";>tigers@autox.team.net</a><br clear=
=3D"none"><br clear=3D"none">Donate: <a href=3D"http://www.team.net/donate.=
html" target=3D"_blank" rel=3D"noopener noreferrer" shape=3D"rect">http://w=
ww.team.net/donate.html</a><br clear=3D"none">Archive: <a href=3D"http://ww=
w.team.net/pipermail/tigers" target=3D"_blank" rel=3D"noopener noreferrer" =
shape=3D"rect">http://www.team.net/pipermail/tigers </a><a href=3D"http://a=
utox.team.net/archive" target=3D"_blank" rel=3D"noopener noreferrer" shape=
=3D"rect">http://autox.team.net/archive</a><br clear=3D"none"><br clear=3D"=
none">Unsubscribe: <a href=3D"http://autox.team.net/mailman/options/tigers/=
mwood24020@aol.com" target=3D"_blank" rel=3D"noopener noreferrer" shape=3D"=
rect">http://autox.team.net/mailman/options/tigers/mwood24020@aol.com</a><b=
r clear=3D"none"><br clear=3D"none"><br clear=3D"none"></div></div>
------=_Part_777952_1267476867.1573923159524--
--===============3465911854966888106==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
tigers@autox.team.net
Archive: http://www.team.net/pipermail/tigers http://autox.team.net/archive
Unsubscribe: http://autox.team.net/mailman/options/tigers/mharc@autox.team.net
--===============3465911854966888106==--
|