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Brian,=0A=0AVery interesting. =C2=A0The owner of British Motorsports, he's=
personally an MGB guy, so he may find this very interesting that you are =
having the same issue.=0A=0ARye=0A=0A=0A=0ARye=0APH: 530-FIND-RYE=0A=0AOn =
Jun 12, 2016, at 10:27 AM, Brian Induni <binduni@gmail.com> wrote:=0A=0ARy=
e, I am having the EXACT same issue with my 1963 MGB! Same symptoms and sa=
me checks all resulting the same scratching of head. Obviously a different=
gearbox and OD unit, so there must be some similarities between OD units =
or wiring or something.=0A=0AReally hoping the list has some suggestions!=0A=
=0ABrian=0A=0A=0A=C2=A0=0A=0A=0A------------------------------------------=
----------------------------=0A=0AMessage: 1=0ADate: Fri, 10 Jun 2016 15:5=
0:18 +0000 (GMT)=0AFrom: Rye Livingston <ryel@mac.com>=0ATo: triumph list =
list <triumphs@autox.team.net>, TTSCC TTSCC=0A=C2=A0 =C2=A0 =C2=A0 =C2=A0 =
<TTSCC@yahoogroups.com>=0ASubject: [TR] Overdrive issues=0AMessage-ID: <06=
d9f0a1-bc70-4a33-9f47-9150424d7930@me.com>=0AContent-Type: text/plain; cha=
rset=3D"utf-8"; Format=3D"flowed"=0A=0ATransmission update - for those rea=
ding about this for the first time, this is a 1960 TR3 with a TR4 OD trans=
mission. Yesterday they said it's basically a TR250 transmission. The whol=
e transmission and OD was rebuilt by?a British car specialist of 40+ years=
. ?His employee has also been working on British cars for years, and is a =
transmission specialist. ?They've rebuilt literally 100s of transmissions =
and ODs. ?They had 4 OD cores on their bench as they were showing me diffe=
rent parts of the system.=0A=0ASymptom -?when I'm accelerating and flip th=
e switch for OD, it doesn't go into OD until I let up. ?When in 2-3 or 4th=
gear, OD engaged, and punch it, it will downshift like an automatic trans=
mission while I accelerate, then shift back into OD when I let up.=0A=0AI'=
m not technical enough to know how to describe all what they told me, but =
I'll try. ?First off, I forwarded the comments when I posted this issue a =
couple of weeks?ago, and keep in mind it's not the easy/obvious things. ?T=
hey've checked all the electrical, solenoids, ground, oil type, etc. ?When=
in OD it's not slipping. ?They've tested the PSI with a gauge attached wh=
ile driving down the expressway, and jacked up with the wheels off the gro=
und. ?=0A=0AThe issue is that it's not getting high enough PSI. ?It's over=
400 PSI, but it needs to be 490 to over 500, I think they said 520. ?They=
've taken the transmission back out, taken the OD all apart, and there's n=
othing obvious. They've changed the piston in the pump. Originally it had =
a pump that would shift softer because I've got a torquey engine and the o=
ther pump, which they called a competition pump, would be hard on the diff=
erential, but they've got that one in the car now. ? They showed me a seal=
that goes around that piston and said the new seals?are?rubber and they g=
ot one like the original style that has some sort of metal reinforcement i=
n it to hopefully make a better seal. ?Not very clear I know, but hopefull=
y that?makes sense. ?They've checked the seats where a small ball bearing =
must make a perfect seal, they all look perfect. ?They said everything loo=
ks absolutely pristine. ?No scoring down passageways that might not allow =
maximum PSI, etc. ?They also showed me the linin=0A=C2=A0g on a?Sun gear t=
hey had on the beach, and said mine looked good and the rivets looked orig=
inal.?They put it all back together, went for a test drive, and that didn'=
t fix it.=0A=0AThey've spent literally 20+ hours on this transmission, plu=
s several more hours doing internet research on the problem. ?As they desc=
ribed everything and what they've checked, which seems like everything, I =
said I'd send out this email to the list. ?Not that they haven't tried eve=
rything, but I'm hoping there may be one little nugget of info they haven'=
t tried, or a test they can run, that will?lead to the solution.=0A=0AThan=
ks,=0A=0ARye Livingston=0ATriumph Travelers Sports Car Club=0AActivities C=
hairman=0A1960 TR3A=0APH: 530-FIND-RYE=0A-------------- next part --------=
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_____________________________________=0A=0ATriumphs mailing list=0ATriumph=
s@autox.team.net=0Ahttp://autox.team.net/mailman/listinfo/triumphs=0A=0A=0A=
------------------------------=0A=0AEnd of Triumphs Digest, Vol 9, Issue 1=
36=0A****************************************=0A=0A=0A** triumphs@autox.te=
am.net **=0A=0ADonate: http://www.team.net/donate.html=0AArchive: http://w=
ww.team.net/archive=0AForums: http://www.team.net/forums=0AUnsubscribe/Man=
age: http://autox.team.net/mailman/options/triumphs/ryel@mac.com=0A=
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<html><body><div>Brian,</div><div><br data-mce-bogus=3D"1"></div><div>Very
interesting=
. The owner of British Motorsports, he's personally an MGB guy, so h=
e may find this very interesting that you are having the same issue.</div>=
<div><br data-mce-bogus=3D"1"></div><div>Rye</div><div><br data-mce-bogus=3D=
"1"></div><div><br data-mce-bogus=3D"1"></div><div><br data-mce-bogus=3D"1=
"></div><div class=3D"x-apple-signature"><pre style=3D"font-family: 'SFNST=
ext','Helvetica Neue', Helvetica, sans-serif; font-size: 15px; white-space=
: pre-wrap; word-wrap: break-word;" data-mce-style=3D"font-family: 'SFNSTe=
xt','Helvetica Neue', Helvetica, sans-serif; font-size: 15px; white-space:=
pre-wrap; word-wrap: break-word;">Rye=0APH: 530-FIND-RYE</pre></div><div>=
<br>On Jun 12, 2016, at 10:27 AM, Brian Induni <binduni@gmail.com> w=
rote:<br><br></div><div><blockquote type=3D"cite"><div class=3D"msg-quote"=
><div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote"><d=
iv>Rye, I am having the EXACT same issue with my 1963 MGB! Same symptoms a=
nd same checks all resulting the same scratching of head. Obviously a diff=
erent gearbox and OD unit, so there must be some similarities between OD u=
nits or wiring or something.</div><div><br></div><div>Really hoping the li=
st has some suggestions!</div><div><br></div><div>Brian</div><div><br></di=
v><div><br></div><div> </div><blockquote class=3D"gmail_quote" style=3D=
"margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-style: sol=
id; border-left-color: #cccccc; padding-left: 1ex;" data-mce-style=3D"marg=
in: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-style: solid; b=
order-left-color: #cccccc; padding-left: 1ex;"><br> <br> -----------------=
-----------------------------------------------------<br> <br> Message: 1<=
br> Date: Fri, 10 Jun 2016 15:50:18 +0000 (GMT)<br> From: Rye Livingston &=
lt;<a href=3D"mailto:ryel@mac.com"; data-mce-href=3D"mailto:ryel@mac.com";>r=
yel@mac.com</a>><br> To: triumph list list <<a href=3D"mailto:triump=
hs@autox.team.net" data-mce-href=3D"mailto:triumphs@autox.team.net";>triump=
hs@autox.team.net</a>>, TTSCC TTSCC<br> <=
;<a href=3D"mailto:TTSCC@yahoogroups.com"; data-mce-href=3D"mailto:TTSCC@ya=
hoogroups.com">TTSCC@yahoogroups.com</a>><br> Subject: [TR] Overdrive i=
ssues<br> Message-ID: <<a href=3D"mailto:06d9f0a1-bc70-4a33-9f47-915042=
4d7930@me.com" data-mce-href=3D"mailto:06d9f0a1-bc70-4a33-9f47-9150424d793=
0@me.com">06d9f0a1-bc70-4a33-9f47-9150424d7930@me.com</a>><br> Content-=
Type: text/plain; charset=3D"utf-8"; Format=3D"flowed"<br> <br> Transmissi=
on update - for those reading about this for the first time, this is a 196=
0 TR3 with a TR4 OD transmission. Yesterday they said it's basically a TR2=
50 transmission. The whole transmission and OD was rebuilt by?a British ca=
r specialist of 40+ years. ?His employee has also been working on British =
cars for years, and is a transmission specialist. ?They've rebuilt literal=
ly 100s of transmissions and ODs. ?They had 4 OD cores on their bench as t=
hey were showing me different parts of the system.<br> <br> Symptom -?when=
I'm accelerating and flip the switch for OD, it doesn't go into OD until =
I let up. ?When in 2-3 or 4th gear, OD engaged, and punch it, it will down=
shift like an automatic transmission while I accelerate, then shift back i=
nto OD when I let up.<br> <br> I'm not technical enough to know how to des=
cribe all what they told me, but I'll try. ?First off, I forwarded the com=
ments when I posted this issue a couple of weeks?ago, and keep in mind it'=
s not the easy/obvious things. ?They've checked all the electrical, soleno=
ids, ground, oil type, etc. ?When in OD it's not slipping. ?They've tested=
the PSI with a gauge attached while driving down the expressway, and jack=
ed up with the wheels off the ground. ?<br> <br> The issue is that it's no=
t getting high enough PSI. ?It's over 400 PSI, but it needs to be 490 to o=
ver 500, I think they said 520. ?They've taken the transmission back out, =
taken the OD all apart, and there's nothing obvious. They've changed the p=
iston in the pump. Originally it had a pump that would shift softer becaus=
e I've got a torquey engine and the other pump, which they called a compet=
ition pump, would be hard on the differential, but they've got that one in=
the car now. ? They showed me a seal that goes around that piston and sai=
d the new seals?are?rubber and they got one like the original style that h=
as some sort of metal reinforcement in it to hopefully make a better seal.=
?Not very clear I know, but hopefully that?makes sense. ?They've checked =
the seats where a small ball bearing must make a perfect seal, they all lo=
ok perfect. ?They said everything looks absolutely pristine. ?No scoring d=
own passageways that might not allow maximum PSI, etc. ?They also showed m=
e the linin<br> g on a?Sun gear they had on the beach, and said mine=
looked good and the rivets looked original.?They put it all back together=
, went for a test drive, and that didn't fix it.<br> <br> They've spent li=
terally 20+ hours on this transmission, plus several more hours doing inte=
rnet research on the problem. ?As they described everything and what they'=
ve checked, which seems like everything, I said I'd send out this email to=
the list. ?Not that they haven't tried everything, but I'm hoping there m=
ay be one little nugget of info they haven't tried, or a test they can run=
, that will?lead to the solution.<br> <br> Thanks,<br> <br> Rye Livingston=
<br> Triumph Travelers Sports Car Club<br> Activities Chairman<br> 1960 TR=
3A<br> PH: 530-FIND-RYE<br> -------------- next part --------------<br> An=
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