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FBH mod - am I wasting my time?
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kevofcov
 


Member Since: 06 Nov 2007
Location: Other end of M69
Posts: 529

England 2016 Discovery 4 3.0 TDV6 Graphite LE Auto Java BlackDiscovery 4
FBH mod - am I wasting my time?

I believe that we are in for a harsh winter this year. I’ve always been disappointed with the limited performance of the FBH. It is working fine and as LR intended but 20mins run time is not enough (think it used to be 30 mins pre2012). The windscreen just about clears but the car still needs frost scraping. The cab is not cold but not warm either.

The 20mins limit is locked into the car and cannot be changed so I intend to fit a helping hand - one of these fitted to the inlet or outlet pump hose of the fuel burning heater.


Click image to enlarge



My question is this please.
Because the coolant temperature will be pre warmed a fair bit already at start up, the FBH will very quickly reach its target temperature. My worry is that if the coolant reaches its target temp will the FBH then shut done early – defeating my efforts. Or will it continue to run until some other perameter is reached e.g. cab interior temp. Or does it continue for 20mins regardless.

I intend to detail my efforts in a thread if the FBH works better (or if its a fail Whistle )
  
Post #230788517th Sep 2022 9:59 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8041

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

I don't know if you have a D3 or D4, I have a my14 D4 with factory fitted remote and I can only say it is very good, 20 minutes with the pre heater on and when the drivers door is opened the heat hits you, no exaggeration 10 times betterthan my old D3. Apparently there was a piping mod done which put more heat into the cockpit than the engine, I would be looking into that before doing any other mod.
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #230791517th Sep 2022 3:28 pm
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 12676

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

Just get an Altox !
 .


Dean
====================================

2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer Sad ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms 
 
Post #230792017th Sep 2022 4:22 pm
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riverblanche
 


Member Since: 31 Aug 2010
Location: retford'ish
Posts: 2206

England 2008 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3
Re: FBH mod - am I wasting my time?

kevofcov wrote:
- one of these fitted to the inlet or outlet pump hose of the fuel burning heater


Hi,

if its designed to fit in the heating circuit why not fit it so Question

the FBH would then work as it should independantly of that unit, so if you did not turn it on and the engine needed "Help" it would work
In cold weather the FBH can start during a journey if needed, such as a quick stop at a shop, you come back out fire up and so does the FBH.

Thumbs Up
 Transit! 2019
Gone D3 HSE 2008
Another Porsche Cayenne 2022
Gone Porsche Cayenne 2020
Gone RRS HSE Dynamic 2016
Gone RRS HSE LUX 2011
Gone RRS HSE 2006
Gone D3 SE 2.7 2008
gone D2 Td5 1999

I plan on living forever and so far so good !

Club DG Mclaren stuff
 
Post #230794517th Sep 2022 8:40 pm
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Motolab
 


Member Since: 18 Oct 2019
Location: Sleen
Posts: 1815

Netherlands 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Hardware wrote:
Just get an Altox !
[

+1 Thumbs Up

Pre heating time can be easily adjusted with an altox…

But beware, you battery needs to be topped up to the max in between BHF use, LR had a reason to limit the time on 20 mins…

Regarding the electrical pre-heater…

Imho, working with a external 230V plug, s Censored s, forget it once, when driving off in a hurry and the damage will be severely
 Best regards
Harold

Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year

Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc. Wink 
 
Post #230816320th Sep 2022 5:53 pm
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paul123
 


Member Since: 22 Mar 2020
Location: norwich
Posts: 230

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

i have one of those fitted on my range rover 200tdi . ok it warms it up but that's about it . it needs about a hour to do any good .
 2005 discovery 3 tdv6
1971 200 tdi 2 door range rover

300tdi defender 90 in bits needs lots of work 
 
Post #23101007th Oct 2022 4:37 pm
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Motolab
 


Member Since: 18 Oct 2019
Location: Sleen
Posts: 1815

Netherlands 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

All that cheap electrical stuff is copied from more decent electrical stuff, still designed for (at first mostly) scandinavian use, where current was cheap, and where users did plug in their units as soon as they parked somewere…. For hours….. maybe the whole night….. to keep things defrosted so they were always ready for use….

Not for instant heat…. Like people like now…

DEFA used to be one of the more decent brands..
https://www.defa.com/


But keep in mind…..Volume, both water/coolant and metal needs time to warm up…. 2,7T needs more heat than 1T
You can not heat up 2,7T fully in 20 or 30 mins…..

So a work around is a shortcut in the coolant system to get only the heater matrix (prim) fed and there you have interior warmth, in the later D4….


You can add such a valve in a D3 quite easily…some times.switched electronically (depending on heater software) or permanent…
 Best regards
Harold

Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year

Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc. Wink 
 
Post #23101327th Oct 2022 8:40 pm
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