--===============8790616360992620251==
--00000000000006a0260597175c48
Content-Transfer-Encoding: quoted-printable
The '78 dash has an "Accessory Switch" that can be added. I have a factory
blanking plate over that switch right now. If I go with the dash switch,
that is where it will go. I would like a light as well, but I prefer the
correct look.
I will probably pull the lever off of my non-O/D and use it, at least
initially. I will need to run the wires. If the wiring wasn't already a
mess on this car from the PO, I would be more concerned about it being
correct and using the shifter switch
(That and it is a CBB '78, so I am not that concerned apparently)
--
Andrew
On Mon, Nov 11, 2019 at 12:06 PM Max Heim via Mgs <mgs@autox.team.net>
wrote:
> It just occurred to me that this may not be as easy on a later car. A
> metal-dash car already has the hole in the dash for the toggle switch.
> There is probably not a handy hole in the 78 dash, and the =E2=80=9Cvinta=
ge-style=E2=80=9D
> chrome-bezel toggle switch would look out of place.
>
> For a while I had a Radio Shack =E2=80=9Cglowing blue=E2=80=9D toggle swi=
tch installed (to
> remind me to switch off the OD), which might look more in keeping with th=
e
> plastic dash. I was a little dubious about it handling the load, but it
> held up fine. The solenoid doesn=E2=80=99t draw much. I don=E2=80=99t rea=
lly think there is
> any reason to run a relay, or the vacuum switch =E2=80=94 a simple ON/OFF=
in series
> with the lock-out switch on the transmission works fine.
>
> I don=E2=80=99t understand how a momentary push button switch (Bert=E2=80=
=99s suggestion)
> would even work...
>
>
> --
> Max Heim
> '66 MGB
>
>
>
> On Nov 11, 2019, at 9:32 AM, Max Heim via Mgs <mgs@autox.team.net> wrote:
>
> Exactly. I have a 1977 vintage blue label OD transmission in my 66. I hav=
e
> a dash-mounted switch to the left of the steering column. The wiring
> couldn=E2=80=99t be simpler. No weird expensive parts. The straight (as o=
pposed to
> crookneck) dash OD switch is cheap.
>
> You might not think the dash switch is as convenient as the gear lever
> switch, but it is really pretty ergonomic. You can flick it with the side
> of your hand while it is still in contact with the wheel =E2=80=94 you do=
n't have
> to go groping for it.
>
> --
> Max Heim
> '66 MGB
>
> On Nov 11, 2019, at 8:08 AM, Charley Robinson via Mgs <mgs@autox.team.net=
>
> wrote:
>
> I've swapped OD gearboxes into two CBBs. In both cases I used the gear
> levers from the original non-OD transmissions. I don't see any reason th=
at
> you can't use the gear lever you already have for the OD box.
>
> As to the OD switch, I'd put it on the dash if I had an open spot for it
> that was handy to my right hand. In the CB cars the wiring and switch ar=
e
> already installed but there's no reason you can't find the white circuit
> that Paul mentioned and run a wire from it to your switch and from the
> switch to the lockout switch on the OD box. Looks like there are a coupl=
e
> of switches in the Moss catalog that would look OK on the dash. The swit=
ch
> is just a SPST that can handle the solenoid current.
>
> My $ .02,
>
> CR
>
> On 11/11/2019 7:35 AM, Andrew Lundgren via Mgs wrote:
>
> I have a '78. The transmission is a blue label, but the seller doesn't
> have the shift lever.
>
> A lever for a '78 is not a cheap thing, and my son who is driving it a lo=
t
> right now likes the Walnut MG logo shifter it has. So I'm looking at
> options for how to install the O/D switch.
>
> From the moss catalog, it looks like the '76 switch won't work with the
> '78. So I might have to buy the parts to put together the shifter switch =
or
> put it in the blank accessory switch above the fan on the dash.
>
>
>
> On Mon, Nov 11, 2019, 1:45 AM PaulHunt73 <paulhunt73@virginmedia.com>
> wrote:
>
>> None of that is to do with the OD itself.
>>
>> Which gears it operated on is a function of the linkages on top of the
>> gearbox, and you can have it on 3 and 4 or 4 only as you wish. When the
>> TCSA was introduced in late 76 to control 'surging' a third switch was
>> added to the top of the gearbox that operated in 2nd and 4th, and this w=
as
>> wired in series with the OD switch operating in 3rd and 4th to produce a
>> 4th gear only output controlling the TCSA and vacuum advance. I suspect
>> that was not very reliable as it was an external micro-switch so it was
>> deleted and the gearbox components changed so the switch operated in 4th
>> only, as done to the V8 several years previously. The gearbox switch no=
w
>> controlled both OD and TCSA.
>>
>> The gear lever itself changed for the 77 model year to incorporate the O=
D
>> manual switch, but that can also be fitted to any year, or the 77 conver=
ted
>> back to some other switch, as you wish.
>>
>> The wiring prior to 77 was from the manual switch on the dash or the
>> column, to the gearbox switch on a yellow and a yellow red, then from th=
ere
>> to the solenoid. For 77 on it was from the ignition supply on a white t=
o
>> the gearbox switch, then from there to the manual switch on the gear lev=
er,
>> and from there to the solenoid.
>>
>> Black label or blue label determines which speedo is compatible - black
>> label was used on CB cars and used a 1280tpm speedo. Blue label was use=
d
>> on RB cars and used a 1000tpm speedo. But speedos can be recalibrated i=
f
>> you end up with the wrong combination.
>>
>> So as a 78 it should have a blue label OD and the manual switch on the
>> gear lever, as the column switch - which together with the plastic dash =
was
>> new for the 77 model year - won't have that function. But if the car ha=
s
>> the earlier RB dash and column switches you don't need the gear lever
>> switch, which is prone to shorting out and causing harness damage.
>>
>> PaulH.
>>
>>
>> ----- Original Message -----
>> Not so much. It will be a a bit still until the transmission arrives.
>> (Freight from NY to UT) I'm just trying to figure out which shifter it
>> should have had as well as which gears it should work on.
>>
>> I'm going to be putting it into a 78, but the current owner is still
>> trying to track down the shifter from his friend, the previous owner. He
>> doesn't know if it was a late shifter or an early one.
>>
>> I'm trying to determine how to wire it in.
>>
>>
> _______________________________________________
> Mgs@autox.team.net
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>
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>
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--00000000000006a0260597175c48
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">The '78 dash has an "Accessory=C2=A0Switch" =
that can be added.=C2=A0 I have a factory blanking plate over that switch r=
ight now. If I go with the dash switch, that is where it will go. I would l=
ike a light as well, but I prefer=C2=A0the correct look.=C2=A0<div><br></di=
v><div>I will probably pull the lever off of my non-O/D and use it, at leas=
t initially.=C2=A0 I will need to run the wires. If the wiring wasn't a=
lready a mess on this car from the PO, I would be more concerned about it b=
eing correct and using the shifter switch</div><div><br></div><div>(That an=
d it is a CBB '78, so I am not that concerned apparently)<div><br></div=
><div>--</div><div>Andrew</div></div></div><br><div class=3D"gmail_quote"><=
div dir=3D"ltr" class=3D"gmail_attr">On Mon, Nov 11, 2019 at 12:06 PM Max H=
eim via Mgs <<a href=3D"mailto:mgs@autox.team.net";>mgs@autox.team.net</a=
>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px=
0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><di=
v style=3D"overflow-wrap: break-word;">It just occurred to me that this may=
not be as easy on a later car. A metal-dash car already has the hole in th=
e dash for the toggle switch. There is probably not a handy hole in the 78 =
dash, and the =E2=80=9Cvintage-style=E2=80=9D chrome-bezel toggle switch wo=
uld look out of place.<div><br></div><div>For a while I had a Radio Shack =
=E2=80=9Cglowing blue=E2=80=9D toggle switch installed (to remind me to swi=
tch off the OD), which might look more in keeping with the plastic dash. I =
was a little dubious about it handling the load, but it held up fine. The s=
olenoid doesn=E2=80=99t draw much. I don=E2=80=99t really think there is an=
y reason to run a relay, or the vacuum switch =E2=80=94 a simple ON/OFF in =
series with the lock-out switch on the transmission works fine.</div><div><=
br></div><div>I don=E2=80=99t understand how a momentary push button switch=
(Bert=E2=80=99s suggestion) would even work...</div><div><br></div><div><b=
r><div>
<div style=3D"color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-=
indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><div st=
yle=3D"color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:=
0px;text-transform:none;white-space:normal;word-spacing:0px"><div style=3D"=
margin:0px;font-size:13px">--</div><div style=3D"margin:0px;font-size:13px;=
min-height:16px">Max Heim</div><div style=3D"margin:0px;font-size:13px">=
9;66 MGB</div></div></div>
</div><div><br></div><div><br></div>
<br><div><blockquote type=3D"cite"><div>On Nov 11, 2019, at 9:32 AM, Max He=
im via Mgs <<a href=3D"mailto:mgs@autox.team.net"; target=3D"_blank">mgs@=
autox.team.net</a>> wrote:</div><br><div><div style=3D"overflow-wrap: br=
eak-word;">Exactly. I have a 1977 vintage blue label OD transmission in my =
66. I have a dash-mounted switch to the left of the steering column. The wi=
ring couldn=E2=80=99t be simpler. No weird expensive parts. The straight (a=
s opposed to crookneck) dash OD switch is cheap.<div><br></div><div>You mig=
ht not think the dash switch is as convenient as the gear lever switch, but=
it is really pretty ergonomic. You can flick it with the side of your hand=
while it is still in contact with the wheel =E2=80=94 you don't have t=
o go groping for it.</div><div><br><div>
<div style=3D"letter-spacing:normal;text-align:start;text-indent:0px;text-t=
ransform:none;white-space:normal;word-spacing:0px"><div style=3D"letter-spa=
cing:normal;text-align:start;text-indent:0px;text-transform:none;white-spac=
e:normal;word-spacing:0px"><div style=3D"margin:0px;font-size:13px">--</div=
><div style=3D"margin:0px;font-size:13px;min-height:16px">Max Heim</div><di=
v style=3D"margin:0px;font-size:13px">'66 MGB</div></div></div>
</div>
<br><div><blockquote type=3D"cite"><div>On Nov 11, 2019, at 8:08 AM, Charle=
y Robinson via Mgs <<a href=3D"mailto:mgs@autox.team.net"; target=3D"_bla=
nk">mgs@autox.team.net</a>> wrote:</div><br><div>
=20
=20
=20
<div bgcolor=3D"#FFFFFF">
I've swapped OD gearboxes into two CBBs.=C2=A0 In both cases I used=
the
gear levers from the original non-OD transmissions.=C2=A0 I don't s=
ee any
reason that you can't use the gear lever you already have for the O=
D
box.=C2=A0 <br>
<br>
As to the OD switch, I'd put it on the dash if I had an open spot
for it that was handy to my right hand.=C2=A0 In the CB cars the wiring
and switch are already installed but there's no reason you can'=
t
find the white circuit that Paul mentioned and run a wire from it to
your switch and from the switch to the lockout switch on the OD
box.=C2=A0 Looks like there are a couple of switches in the Moss catalo=
g
that would look OK on the dash.=C2=A0 The switch is just a SPST that ca=
n
handle the solenoid current.<br>
<br>
My $ .02,<br>
<br>
CR<br>
<br>
<div>On 11/11/2019 7:35 AM, Andrew Lundgren
via Mgs wrote:<br>
</div>
<blockquote type=3D"cite">
=20
<div dir=3D"auto">I have a '78. The transmission is a blue label,
but the seller doesn't have the shift lever.
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto">A lever for a '78 is not a cheap thing, and m=
y
son who is driving it a lot right now likes the Walnut MG logo
shifter it has.=C2=A0 So I'm looking at options for how to in=
stall
the O/D switch.=C2=A0</div>
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto">From the moss catalog, it looks like the '76
switch won't work with the '78. So I might have to buy th=
e
parts to put together the shifter switch or put it in the
blank accessory switch above the fan on the dash.=C2=A0=C2=A0</di=
v>
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto"><br>
</div>
</div>
<br>
<div class=3D"gmail_quote">
<div dir=3D"ltr" class=3D"gmail_attr">On Mon, Nov 11, 2019, 1:45 AM
PaulHunt73 <<a href=3D"mailto:paulhunt73@virginmedia.com"; targ=
et=3D"_blank">paulhunt73@virginmedia.com</a>>
wrote:<br>
</div>
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex=
;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor=3D"#ffffff">
<div><font size=3D"2">None of that is=C2=A0to do with the OD
itself.</font></div>
<div>=C2=A0</div>
<div><font size=3D"2">Which gears it operated on is a function
of the linkages on top of the gearbox, and you can have
it on 3 and 4 or 4 only as you wish.=C2=A0 When the TCSA=C2=
=A0was
introduced in late 76 to control 'surging'=C2=A0a t=
hird
switch was added to the top of the gearbox that operated
in 2nd and 4th, and this was wired in series with the OD
switch operating in 3rd and 4th to produce a 4th gear
only output controlling the TCSA and vacuum advance.=C2=A0 =
I
suspect that was not very reliable as it was an external
micro-switch so it was deleted and the gearbox
components changed so the switch operated=C2=A0in 4th
only,=C2=A0as done to the V8=C2=A0several years previously.=
=C2=A0 The
gearbox switch now controlled both OD and TCSA.=C2=A0 </fon=
t></div>
<div>=C2=A0</div>
<div><font size=3D"2">The gear=C2=A0lever itself changed for th=
e 77
model year to incorporate the OD manual switch,=C2=A0but th=
at
can also be fitted to any year, or the 77 converted back
to some other switch, as you wish.</font></div>
<div>=C2=A0</div>
<div><font size=3D"2">The wiring prior to 77 was from the
manual switch on the dash or the column, to the gearbox
switch on a yellow and a yellow red, then from there to
the solenoid.=C2=A0 For 77 on it was from the ignition supp=
ly
on a white to the gearbox switch, then from there to the
manual switch on the gear lever, and from there to the
solenoid.</font></div>
<div>=C2=A0</div>
<div><font size=3D"2">Black label or blue label determines
which speedo is compatible - black label was used on CB
cars and used a 1280tpm speedo.=C2=A0 Blue label was used o=
n
RB cars and used a 1000tpm speedo.=C2=A0 But speedos can be
recalibrated if you end up with the wrong combination.=C2=
=A0</font></div>
<div>=C2=A0</div>
<div><font size=3D"2">So as a 78 it should have a blue label
OD and the manual switch on the gear lever, as the
column switch - which together with the plastic dash was
new for the 77 model year -=C2=A0won't have that functi=
on.=C2=A0
But=C2=A0if the car has the earlier RB dash and column
switches you don't need the gear lever switch, which is
prone to shorting out and causing harness damage.</font></d=
iv>
<div>=C2=A0</div>
<div><font size=3D"2">PaulH.</font></div>
<div>=C2=A0</div>
<blockquote style=3D"border-left:2px solid rgb(0,0,0);padding-l=
eft:5px;padding-right:0px;margin-left:5px;margin-right:0px">
<div style=3D"font:10pt arial">----- Original Message -----
</div>
<div dir=3D"auto">Not so much. It will be a a bit still
until the transmission arrives. (Freight from NY to UT)
I'm just trying to figure out which shifter it should
have had as well as which gears it should work on.=C2=A0=C2=
=A0
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto">I'm going to be putting it into a 78,
but the current owner is still trying to track down
the shifter from his friend, the previous owner. He
doesn't know if it was a late shifter or an early one=
.</div>
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto">I'm trying to determine how to wire i=
t
in.</div>
</div>
</blockquote>
</div>
</blockquote>
</div>
<br>
<fieldset></fieldset>
<pre>_______________________________________________
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</pre>
</blockquote>
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