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I haven=E2=80=99t seen anyone mention Red Line MT-90. It is specific =
for use in manual transmissions. 75W90 GL-4. I used it after reading a =
lot about these questions on the Healey list. Healeys also have a =
similar overdrive as the MGs. Works great in my BN7. Better than the =
engine oil that I first tried after a complete rebuild.
Ron=20
From: Charley Robinson via Mgs=20
Sent: Friday, January 18, 2019 12:44 PM
To: Jack Wheeler ; Osborne, Paul=20
Cc: Mglist=20
Subject: Re: [Mgs] Overdrive Diagram
Now that you have the relief valve reinstalled correctly, the only other =
variable is the oil. I suggest you drain the gearbox/OD and refill with =
the same oil you use in the engine. I've owned two MGBs with OD and =
always used engine oil. It was Castrol 20-50 until I changed to =
Valvoline racing oil of the same grade after the flat-tappet scare =
started going around. Never had any trouble with the ODs and I drove =
both cars plenty.
CR
On 1/18/2019 10:32 AM, Jack Wheeler via Mgs wrote:
Hi Paul. You are correct, I removed the low pressure valve, NOT the =
pump assembly. I was looking at the manual and the parts which came out =
appeared to be closer to those shown as the pump assembly, but neither =
was the same as mine. That's how I assumed it was the pump assembly.
So, now that I have the low pressure valve installed properly, the =
overdrive still does not engage. The other thing I changed was the gear =
oil. I always used straight 50 Wt. motor oil in my overdrives, and that =
worked fine. Based on a recent article in the Tech Issue of "MG Driver" =
magazine, I switched to EP 85/90 GL-4 gear oil. Do you think this could =
be causing the problem?
Thanks for your help.
Jack
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Mgs@autox.team.net
Archive: http://www.team.net/pipermail/mgs
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<HTML><HEAD>
<META content=3D"text/html; charset=3DUTF-8" =
http-equiv=3DContent-Type></HEAD>
<BODY dir=3Dltr text=3D#000000 bgColor=3D#ffffff>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Arial'; COLOR: #000000">
<DIV>I haven=E2=80=99t seen anyone mention Red Line MT-90. It is =
specific for use=20
in manual transmissions. 75W90 GL-4. I used it after reading =
a lot=20
about these questions on the Healey list. Healeys also have a =
similar=20
overdrive as the MGs. Works great in my BN7. Better than the =
engine=20
oil that I first tried after a complete rebuild.</DIV>
<DIV> </DIV>
<DIV>Ron </DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV style=3D"FONT: 10pt tahoma">
<DIV> </DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Dmgs@autox.team.net>Charley=20
Robinson via Mgs</A> </DIV>
<DIV><B>Sent:</B> Friday, January 18, 2019 12:44 PM</DIV>
<DIV><B>To:</B> <A title=3Djwheeler1947@yahoo.com>Jack Wheeler</A> ; <A=20
title=3Dpaul@ece.rochester.edu>Osborne, Paul</A> </DIV>
<DIV><B>Cc:</B> <A title=3Dmgs@autox.team.net>Mglist</A> </DIV>
<DIV><B>Subject:</B> Re: [Mgs] Overdrive Diagram</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>Now=20
that you have the relief valve reinstalled correctly, the only other =
variable is=20
the oil. I suggest you drain the gearbox/OD and refill with the =
same oil=20
you use in the engine. I've owned two MGBs with OD and always used =
engine=20
oil. It was Castrol 20-50 until I changed to Valvoline racing oil =
of the=20
same grade after the flat-tappet scare started going around. Never =
had any=20
trouble with the ODs and I drove both cars plenty.<BR><BR>CR<BR><BR>
<DIV class=3Dmoz-cite-prefix>On 1/18/2019 10:32 AM, Jack Wheeler via Mgs =
wrote:<BR></DIV>
<BLOCKQUOTE cite=3Dmid:2070239259.1770028.1547829159984@mail.yahoo.com=20
type=3D"cite">
<DIV class=3Dydp836d150eyahoo-style-wrap=20
style=3D"FONT-SIZE: 13px; FONT-FAMILY: helvetica neue, helvetica, =
arial, sans-serif">
<DIV>Hi Paul. You are correct, I removed the low pressure valve, =
NOT the=20
pump assembly. I was looking at the manual and the parts which =
came out=20
appeared to be closer to those shown as the pump assembly, but neither =
was the=20
same as mine. That's how I assumed it was the pump =
assembly.</DIV>
<DIV> </DIV>
<DIV>So, now that I have the low pressure valve installed properly, =
the=20
overdrive still does not engage. The other thing I changed was =
the gear=20
oil. I always used straight 50 Wt. motor oil in my overdrives, =
and that=20
worked fine. Based on a recent article in the Tech Issue of "MG =
Driver"=20
magazine, I switched to EP 85/90 GL-4 gear oil. Do you think =
this could=20
be causing the problem?</DIV>
<DIV> </DIV>
<DIV>Thanks for your help.</DIV>
<DIV> </DIV>
<DIV>Jack<BR></DIV>
<DIV> </DIV></DIV><BR></BLOCKQUOTE><BR>
<P>
<HR>
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<BR>Donate:=20
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