Gearbox Temperature

I

Idris

Guest

• Jul 24, 2006

• #1

How hot should the gearbox and transfer box get? Mine is getting so hot it
is raising the cab temperature, the bulk head is getting hot. Both gearbox
and transfer box too hot to keep your hand on for more than a second. The
handbrake drum is much cooler so doubt that is the source. Its a 1989
Defender 110 V8 CSW with an LT85 box. Have checked oil levels in both boxes
and they are fine.

Gerald

 

L

Lee_D

Guest

• Jul 24, 2006

• #2

Idris <[email protected]> uttered summat worrerz funny about:
> How hot should the gearbox and transfer box get? Mine is getting so
> hot it is raising the cab temperature, the bulk head is getting hot.
> Both gearbox and transfer box too hot to keep your hand on for more
> than a second. The handbrake drum is much cooler so doubt that is the
> source. Its a 1989 Defender 110 V8 CSW with an LT85 box. Have checked
> oil levels in both boxes and they are fine.
>
> Gerald

Surprisingly hot! This is one area where 101's with hard tops and summer are
a little incompatible.

I've had allsorts of thoughts to try and introduce additional cooling but
for the milage I do it's not worth the bother.

Lee D

 

D

Derek

Guest

• Jul 24, 2006

• #3

"Lee_D" <[email protected]> wrote in message
news:[email protected]...
> Idris <[email protected]> uttered summat worrerz funny about:
>> How hot should the gearbox and transfer box get? Mine is getting so
>> hot it is raising the cab temperature, the bulk head is getting hot.
>> Both gearbox and transfer box too hot to keep your hand on for more
>> than a second. The handbrake drum is much cooler so doubt that is the
>> source. Its a 1989 Defender 110 V8 CSW with an LT85 box. Have checked
>> oil levels in both boxes and they are fine.
>>
>> Gerald
>
> Surprisingly hot! This is one area where 101's with hard tops and summer
> are a little incompatible.
>
> I've had allsorts of thoughts to try and introduce additional cooling but
> for the milage I do it's not worth the bother.
>
> Lee D
If it was an issue
http://www.agriemach.com/default.php?cPath=7&osCsid=29a22d7ae5109158232c27b08f36583e
helps I've done the manifold so I don't get the KungFu tattoos like Kaine
in the TV series.They claim that it improves the charge density - No bad
thing this weather certainly makes it a bit quieter.
Derek

 

D

Dougal

Guest

• Jul 25, 2006

• #4

Idris wrote:

> How hot should the gearbox and transfer box get? Mine is getting so hot it
> is raising the cab temperature, the bulk head is getting hot. Both gearbox
> and transfer box too hot to keep your hand on for more than a second. The
> handbrake drum is much cooler so doubt that is the source. Its a 1989
> Defender 110 V8 CSW with an LT85 box. Have checked oil levels in both boxes
> and they are fine.
>
> Gerald

You can manage one second - it's still 'cold'. The oil will withstand
temperatures considerably above the boiling point of water and your
hand will not stand that for a second!

View it as a demonstration of just how inefficent gearboxes are.

 

C

ChavScum

Guest

• Jul 25, 2006

• #5

Yep, sounds right. Get some automotive insulation material and lag the
transmission tunnel. Mine always used to draw heat through the gaps
around the plate underneath the cubby box too, and it was always drew
more hot air into the cabin when the sunroof was open.


Idris wrote:
> How hot should the gearbox and transfer box get? Mine is getting so hot it
> is raising the cab temperature, the bulk head is getting hot. Both gearbox
> and transfer box too hot to keep your hand on for more than a second. The
> handbrake drum is much cooler so doubt that is the source. Its a 1989
> Defender 110 V8 CSW with an LT85 box. Have checked oil levels in both boxes
> and they are fine.
>
> Gerald

 

F

fanie

Guest

• Jul 25, 2006

• #6

I always regarded this as a feature since it helped, albeit
marginally, to keep things a little warmer in winter when the wind was
gusting through the various body appertures.

regards
Stephen

On 24 Jul 2006 16:14:27 -0700, "ChavScum"
<[email protected]> wrote:

>Yep, sounds right. Get some automotive insulation material and lag the
>transmission tunnel. Mine always used to draw heat through the gaps
>around the plate underneath the cubby box too, and it was always drew
>more hot air into the cabin when the sunroof was open.
>
>
>Idris wrote:
>> How hot should the gearbox and transfer box get? Mine is getting so hot it
>> is raising the cab temperature, the bulk head is getting hot. Both gearbox
>> and transfer box too hot to keep your hand on for more than a second. The
>> handbrake drum is much cooler so doubt that is the source. Its a 1989
>> Defender 110 V8 CSW with an LT85 box. Have checked oil levels in both boxes
>> and they are fine.
>>
>> Gerald

 

D

David G. Bell

Guest

• Jul 25, 2006

• #7

On Tuesday, in article
<[email protected]>
DougalAThiskennel.free-online.co.uk "Dougal" wrote:

> Idris wrote:
>
> > How hot should the gearbox and transfer box get? Mine is getting so hot it
> > is raising the cab temperature, the bulk head is getting hot. Both gearbox
> > and transfer box too hot to keep your hand on for more than a second. The
> > handbrake drum is much cooler so doubt that is the source. Its a 1989
> > Defender 110 V8 CSW with an LT85 box. Have checked oil levels in both boxes
> > and they are fine.
> >
> > Gerald
>
> You can manage one second - it's still 'cold'. The oil will withstand
> temperatures considerably above the boiling point of water and your
> hand will not stand that for a second!
>
> View it as a demonstration of just how inefficent gearboxes are.

So what's the correct grade of oil?

Yes, gearboxes do get hot, and this weather isn't helping. In some
situations, I'd wonder if a build-up of muck and dusk were acting as
insulation, but the last time I has that sort of problem was with a
combine harvester.
--
David G. Bell -- SF Fan, Filker, and Punslinger.

"I am Number Two," said Penfold. "You are Number Six."

 

L

Larry

Guest

• Jul 25, 2006

• #8

That is the only thing that effectively heats my cab in winter. Ihave
experienced transmission oil overheating in automatics, it oozes past the
seals and catches fire, the solution there is to fit a transmission oil
cooler, don't know whether there is such a thing as a gearbox oil cooler.

--
Larry
Series 3 rust and holes


"Idris" <[email protected]> wrote in message
news:[email protected]...
> How hot should the gearbox and transfer box get? Mine is getting so hot it
> is raising the cab temperature, the bulk head is getting hot. Both gearbox
> and transfer box too hot to keep your hand on for more than a second. The
> handbrake drum is much cooler so doubt that is the source. Its a 1989
> Defender 110 V8 CSW with an LT85 box. Have checked oil levels in both
boxes
> and they are fine.
>
> Gerald
>
>

 

I

Idris

Guest

• Jul 25, 2006

• #9

"Larry" <[email protected]> wrote in message
news:[email protected]...
> That is the only thing that effectively heats my cab in winter. Ihave
> experienced transmission oil overheating in automatics, it oozes past the
> seals and catches fire, the solution there is to fit a transmission oil
> cooler, don't know whether there is such a thing as a gearbox oil cooler.
>
> --
> Larry
> Series 3 rust and holes
>
>
> "Idris" <[email protected]> wrote in message
> news:[email protected]...
> > How hot should the gearbox and transfer box get? Mine is getting so hot
it
> > is raising the cab temperature, the bulk head is getting hot. Both
gearbox
> > and transfer box too hot to keep your hand on for more than a second.
The
> > handbrake drum is much cooler so doubt that is the source. Its a 1989
> > Defender 110 V8 CSW with an LT85 box. Have checked oil levels in both
> boxes
> > and they are fine.
> >
> > Gerald
> >
> >
>
>
Thanks for all the replies, take it this is relatively normal then.

I note Davids reference to a combine, interesting, I have marginally more
experience of those than Land Rovers.

Correct oils as specified in both boxes.

Will concentrate my efforts on keeping the heat out of the cab rather than
worrying why its being generated.

Gerald

 

P

Peter A

Guest

• Jul 27, 2006

• #10

Idris wrote:
> How hot should the gearbox and transfer box get? Mine is getting so hot it
> is raising the cab temperature, the bulk head is getting hot.

This is correct. Landrovers are devices for converting your money into
heat, noise, and a large grin.