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geobloke

Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4410

rallysteve wrote:
I have the issue that my new heater matrix is so efficient that it just cools the TD5 engine back down again in cool weather!

Ditto to this. As soon as I slow down or stop it takes no time at all for the temperature gauge to fall back to the cold side of the range...

28th Feb 2018 3:22pm

geobloke

Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4410

GREENI wrote:
Part of the issue is the lower part of the dash is basically the whole of the piping before it gets to the piddly little vents.

Even a brand new matrix isn't great (have one on the V8 ) and they are a lot warmer running than the td5!

Maybe a diesel heater like Eberspacher?

Back in the dark ages of 200tdi defenders folks had good results from lagging the internal ducting to stop the heat from escaping the enormous bulkhead shaped plenum chamber. Might be worth looking in to.

Apart from that Eberspacher is the way forward. I did see these, thought they might be worth a punt;

https://www.ebay.co.uk/itm/5000w-Air-Diese...0505.m3226

28th Feb 2018 3:25pm

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5864

1999 Defender 110 Td5 SW Caledonian Blue

geobloke wrote:
rallysteve wrote:
I have the issue that my new heater matrix is so efficient that it just cools the TD5 engine back down again in cool weather!

Ditto to this. As soon as I slow down or stop it takes no time at all for the temperature gauge to fall back to the cold side of the range...

My gauge does not move once I stop or slow down, just the heat drops off from the blowers. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

28th Feb 2018 3:52pm

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5864

geobloke wrote:
GREENI wrote:
Part of the issue is the lower part of the dash is basically the whole of the piping before it gets to the piddly little vents.

Even a brand new matrix isn't great (have one on the V8 ) and they are a lot warmer running than the td5!

Maybe a diesel heater like Eberspacher?

Back in the dark ages of 200tdi defenders folks had good results from lagging the internal ducting to stop the heat from escaping the enormous bulkhead shaped plenum chamber. Might be worth looking in to.

Apart from that Eberspacher is the way forward. I did see these, thought they might be worth a punt;

https://www.ebay.co.uk/itm/5000w-Air-Diese...0505.m3226

I did wonder about those, but would rather have a UK seller than a Chinese one (for warranty etc) for the price though, not bad.

I did read about a flap being open that can get cold air in from the airbox side but not dug much deeper TBH.

Anyone got pics of the ducting or a diagram of the pipe work ? 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

28th Feb 2018 3:54pm

bankz5152

Member Since: 02 Feb 2017
Location: South London/North Kent
Posts: 2187

Could fit the Allisport uprated heater matrix

28th Feb 2018 4:16pm

donmacn

Member Since: 06 Nov 2017
Location: Nth Scotland
Posts: 1848

quote: "could fit the Allisport uprated heater matrix"

Yep - just done that - see here: http://www.defender2.net/forum/post689662.html#689662

As that post on the other thread will show it's not something to be taken on lightly. For me at least it was a job with a really high

content.

I will say that it definitely does its job though - a significantly increased heat output - and I didn't notice any engine cooling even in the temperatures we have at the moment. Donald

1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong
(The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html )
2000 Range Rover P38 4.0L V8

in the past..
RR classic - fitted with 200Tdi
1984 RR classic - V8 with ZF auto box
1993 Discovery 300Tdi

not to mention the minis and the Type 2 VW camper...

28th Feb 2018 4:35pm

wyvern

Member Since: 13 Dec 2009
Location: Cornwall
Posts: 2117

2012 Defender 110 Puma 2.2 XS CSW Firenze Red

May I humbly suggest a diesel powered cab heater .... this will solve your problems in one hit and have more benefits of heating the cab when parked up at night... just a thought !

Poppy - TDCI (Puma) 110XS 2.2 - Camper conversion - see the build here - https://www.defender2.net/forum/topic56530.html
Elgar -TDCI(Puma) 110XS Dormobile - now sold
Devon & Cornwall 4x4 Response - DC126

28th Feb 2018 4:41pm

Mike c

Member Since: 11 Aug 2017
Location: Maldon, Essex
Posts: 930

My td5 heater is normally fine, in fact very good, however I did notice the temperature gauge struggling whilst crawling to work in traffic early this morning in the colder temperatures/snow, my engine has no under bonnet pad, wonder if that helps things...

28th Feb 2018 4:47pm

dnorrishill

Member Since: 15 Jul 2011
Location: Hampshire
Posts: 616

2014 Defender 90 Puma 2.2 XS CSW Aintree Green

tolley wrote:
Rad muff might work

Made no difference to my old TD5...

They help keep crud out of the radiator, but as the thermostat will be closed in low temperatures (or should be!) there will be no water flowing through the radiator anyway.

28th Feb 2018 6:17pm

roel

Member Since: 08 Aug 2009
Location: Lelystad
Posts: 2039

geobloke wrote:
GREENI wrote:
The td5's heater is woeful.

Woeful? Poppycock... It is adequate when dressed correctly...

Besides, follow these simple rules for dress code and you'll make it through to Spring;

Click image to enlarge

Almost correct. But a insolated coverall helps too.

Click image to enlarge Roel

1984 90 2.5 na Diesel - RR V8 (1994-2001)
1997 Camel Trophy Discovery 300TDI (2001-2009)
2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts.
2003 90 Td5 (2009-now)

28th Feb 2018 6:55pm

miker

Member Since: 13 Sep 2015
Location: Surrey
Posts: 1764

Fitted heated seats in mine. It's glorious. Do keep looking at a diesel heater in future, but it's a long way down the list!

28th Feb 2018 7:02pm

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5864

I am planning on refurbing the seats and heater elements are going in.

Diesel heater has also been on my list.

Does anyone know the correct position for the heater flap on the matrix housing? Do you move it as far is it goes (hear it hitting the insides) then adjust cable to get max movement? 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

1st Mar 2018 12:38pm

JOW240725

Member Since: 04 May 2015
Location: Suffolk
Posts: 7907

2012 Defender 110 Puma 2.2 XS CSW Orkney Grey

I have the same issue in the 200Tdi, just need more heat! My first V8 hybrid 90 was never short of heat, I'm sure it had a heater exchange from a Range Rover Classic, but can't quite remember. Would this improve cabin heat? Easy job to fit? James
MY2012 110 2.2TDCi XS SW Orkney Grey - http://www.defender2.net/forum/topic43410.html
MY1990 110 200TDi SW beautifully faded Portofino Red - https://www.defender2.net/forum/post743641.html#743641
MY1984 90 V8 Slate Grey - https://www.defender2.net/forum/post744557.html#744557
Instagram @suffolk_rovers

1st Mar 2018 1:13pm

donmacn

Member Since: 06 Nov 2017
Location: Nth Scotland
Posts: 1848

excossack wrote:

Does anyone know the correct position for the heater flap on the matrix housing? Do you move it as far is it goes (hear it hitting the insides) then adjust cable to get max movement?

That's just what I did at the weekend. Made sure the flap is fully over to the 'heat' side (air from the duct is being directed to the matrix) and then adjusted the cable to correspond to that. Then check that, as you move the dash control, you get full range of movement of the lever on the heater box.

You can see it working anyway - bonnet up; driver's window open, and you can see the lever on the box moving as you move the dash control up and down. Donald

1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong
(The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html )
2000 Range Rover P38 4.0L V8

in the past..
RR classic - fitted with 200Tdi
1984 RR classic - V8 with ZF auto box
1993 Discovery 300Tdi

not to mention the minis and the Type 2 VW camper...

1st Mar 2018 7:24pm

voorfrank

Member Since: 06 Feb 2017
Location: Schiedam
Posts: 37

2002 Defender 110 2.5 TD SW Bonatti Grey

In my old Defender I replaced the low vents for these:

Installed 2x left and 2x right. This was a big improvement.

https://www.ebay.co.uk/itm/Pair-of-60-mm-A...1290678994

2nd Mar 2018 8:02am

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