[Saloon-lovers] Borg Warner DG 250 gearbox

I have had my gearbox rebuilt; prior to the rebuild it was
leaking(surprise). After 2 attempts by 2 separate
rebuilders it is still leaking at various points. Has
anybody had the same experience and what did they do?–
JA Steggles
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In reply to a message from Elephant sent Thu 29 Jan 2015:

Leaking Transmission, 1967 MKII/340, Mine always leaks, it
is just marking it territory. No hope in stopping it.–
Richard Oliphant
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In reply to a message from RAOPAO sent Thu 29 Jan 2015:

Well, I’ve just paid �2802 for a rebuild, so it had better
not effin leak!–
John & Tigger (3.4 Mk 2 Auto 1966)
Neston, Cheshire., United Kingdom
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In reply to a message from Elephant sent Thu 29 Jan 2015:

not with a DG250, but in particular another tranny, which
was a Clark 5 speed truck gearbox & transfer case, these had
leather shaft seals and are 70+ years old.

here is the advice I received from several hugely
experienced sources the way to minimise leakage in those &
other aged transmissions was to;

A) attend to worn shafts with Speedy Sleeves
(over many years the seal wears a track in the shaft)

B) If at all possible, obtain ‘‘modern’’ seals of same size
from the bearing shop…the only was is to measure each one
and cross check. They offer superior sealing characteristics.

As many seals are a standard size, sometimes you may have an
option such as ‘‘double-lip viton’’ which cost a lot more

This is time consuming, sometimes they are available, some
not. You need shaft OD, bore ID, seal thickness

Identify the location of each leak with talcum powder or
similar.

Over the years of reading JL, leaking DG250s seems a
persistent complaint. My not yet rebuilt BW8 leaks too

For 2800, I would hopefully expect no leaks, and no excuses
either, presume the above issues would have been addressed
at that price

I only deal with tranny shops were the proprietor has grey
hair and been in business 30+ years, and is familiar with
the tranny he is to rebuild, I would ask them what they did
to prevent leaks, other than put it back together with a
‘‘seal & gasket kit’’

If a rebuilder cannot answer those sort of questions, they
should not be contracted to do the job imo–
The original message included these comments:

I have had my gearbox rebuilt; prior to the rebuild it was
leaking(surprise). After 2 attempts by 2 separate
rebuilders it is still leaking at various points. Has
anybody had the same experience and what did they do?


Tony
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In reply to a message from awg sent Fri 30 Jan 2015:

This is the second rebuild of this box by G whitehouse;
immaculate workmanship, last one was 13 years / 40000 miles
ago, but it had suffered by the car being idle for the last
three years. Picking up transmission next week to be
reunited with newly rebuilt engine, which was around �4000!
(�2700 rebuild, rebore and head work, plus �1,000 ish parts
I provided to the rebuilder.

Skint isn’t the word right now. Bodywork is having a do over
whilst engine out…–
John & Tigger (3.4 Mk 2 Auto 1966)
Neston, Cheshire., United Kingdom
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In reply to a message from Tigger sent Sat 31 Jan 2015:

You should not expect an automatic transmission to leak.
The fact that your transmission does leak is because it has
not been properly repaired. The Borg Warner 8 in my 420
does not leak. Millions of Ford FMX transmission were built
that do not leak. Old worn out seals can cause leaks but
with the exception of the front pump seal and the output
shaft seal the other seals can be serviced in the car. The
Borg Warner automatic in your car is related to the Ford
FMX and parts are not difficult to get. If it leaks then
take it back and have the mechanic fix it. Pete–
Pete55Tbird
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In reply to a message from Pete55Tbird sent Sun 1 Feb 2015:

Quite agree, Pete. We have a '68 'Stang with a C4 that just
doesn’t leak at all since being rebuilt about 15 years ago.

By the way and just hi-jacking the thread a bit, if anyone’s
interested I have (in the UK) a John’s Cars conversion kit to
fit the GM T700-R4 AOD trans to the XK engine, came out of a
scrapped XJ6. IMHO would be a better and apparently far
cheaper alternative to having the original BW rebuilt.–
Anthony Richards
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In reply to a message from Anthony Richards sent Thu 5 Feb 2015:

Apologies, someone sent me an e-mail about this, but it
seems to have sunk without trace !

Would you like to try again ?–
The original message included these comments:

By the way and just hi-jacking the thread a bit, if anyone’s
interested I have (in the UK) a John’s Cars conversion kit to
fit the GM T700-R4 AOD trans to the XK engine, came out of a
scrapped XJ6. IMHO would be a better and apparently far
cheaper alternative to having the original BW rebuilt.


Anthony Richards
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