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Evil Elsie

Member Since: 25 Feb 2023
Location: Cumbria
Posts: 189

Diesel Heater Supply

Hey Folks,
I'm starting to amass the gear to install my diesel heater and see that there's potentially two ways to pick up the fuel from the tank.
There's a nice (but expensive) insert that fits into the filler neck and has an internal standpipe.
Then there's the plastic T-piece doo-dah (cheap as chips) that fits in the return line to the tank - I think.

What's the pros and cons between the two..?? Ones more than ten times the cost of the other and they both look relatively easy to install - or are they..?? 😄

Cheers, Dave 2002 Land Rover 110 Td5 Utility
1990 Suzuki GSXR 1100L
1980 Yamaha RD 350LC
1976 Yamaha RD 400C

2nd Aug 2024 5:54pm

MarkBrown

Member Since: 03 Oct 2022
Location: Mid Wales
Posts: 409

1983 Defender 110 Other HT Auto Keswick Green

On my 110 I used a plastic T-piece cut into the main line as close to the pump as possible, fed through an in - line filter. I purchased a 2m length of alloy intake hose and ran it up to a better air intake under the bonnet, this all works fine, it even has a remote control. It takes around 15 minutes to heat up the space nicely on a cold day and can be used in tandem with the main heater if required.

On my sprinter van I drilled through one of the spare fuel line fittings in the fuel pump on top of the tank and ran it through a very long fuel pipe to the back of the van, where the unit it fitted. All parts used were in the kit, which again works fine. The pump is in the top of the tank, so the tank has to be removed.

I don’t know how easy it would be to fit the ‘T’ into a plastic fuel line though, mines rubber.

I also tried a couple of brass fittings, thinking they would be more durable, but couldn’t get them to seal, this was probably just the one I picked.

2nd Aug 2024 6:53pm

andy63

Member Since: 30 Jun 2023
Location: north east
Posts: 409

Not that you are likely to but for anyone that has the tank out and wants to plan for a diesel htr the pump sender unit has an existing dip tube that you can tap into by
cutting the sealed top off and fitting your tube👍

Click image to enlarge

2nd Aug 2024 9:05pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 7874

2011 Defender 110 Puma 2.4 USW Stornoway Grey

I went for the option shown above into the tank through spare fitting above pump. Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

3rd Aug 2024 7:07am

Evil Elsie

Member Since: 25 Feb 2023
Location: Cumbria
Posts: 189

Superb info/advice - thank you all..👍👍
The unused spur on the fuel tank sender would be the preferred/neatest option. I think a lot of folk have access panels cut into their tub floor to access the Sender - sadly not me though..🙄

I'll most likely go for the T-piece in the fuel line - 'cos it's cheaper..!!

As a follow up question;
Would you mind telling me where you mounted the Pump..?? I'm going to fit my heater under the Cubby box so there'll be plenty of chassis rail to go for but I don't want to drill/tap the chassis to mount the pump... 2002 Land Rover 110 Td5 Utility
1990 Suzuki GSXR 1100L
1980 Yamaha RD 350LC
1976 Yamaha RD 400C

3rd Aug 2024 10:24am

Mo Murphy

Member Since: 01 Jun 2008
Location: Letchworth Garden City, Herts
Posts: 2183

1984 Defender 90 200 Tdi HT Pennine Grey

There is no chassis under the cubby box, just transfer box under the seat box cover. Most people mounting their heater in this position use a dedicated box like those sold by Mud -
https://www.mudstuff.co.uk/products/mud-he...cUxpXAFOIp
Some people cable tie the pump in place or find an unused insert.
HTH
Mo The Land Rover 90 - Many are called, few are chosen.

3rd Aug 2024 7:50pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 7874

I fitted an insert to existing hole and bolted pump to that.

I.dont have an access panel just dropped tank to fit pickup. Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

3rd Aug 2024 9:56pm

Evil Elsie

Member Since: 25 Feb 2023
Location: Cumbria
Posts: 189

Thanks Mo and JST,
I've just checked the installation guide and the pump is to be no more than 300mm from the fuel line T-piece, so that will limit my options....

That's a good shout on using an existing hole. Hopefully there's one in the perfect place... 😜I'll use a Rivnut - 👍👍

Cheers, Dave 2002 Land Rover 110 Td5 Utility
1990 Suzuki GSXR 1100L
1980 Yamaha RD 350LC
1976 Yamaha RD 400C

4th Aug 2024 2:09pm

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5815

1999 Defender 110 Td5 SW Caledonian Blue

I put a small fuel tank under the bonnet and mounted the pump to the inner wing 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

5th Aug 2024 8:17am

MarkBrown

Member Since: 03 Oct 2022
Location: Mid Wales
Posts: 409

I mounted mine on the floor behind the front seats bulkhead. There’s a t piece to direct heat to the front, between the seat and cubby box and on to the back. The pipes go through the floor, there’s a chassis rail nearby to mount the pump, the fuel line on mine is routed across the chassis, so nearby. Exhaust exits underneath but towards the outside, fixed to the tub cross member. The breather is extended to draw air from the bulkhead under the bonnet.

5th Aug 2024 8:54am

Evil Elsie

Member Since: 25 Feb 2023
Location: Cumbria
Posts: 189

Thanks Gents - some further food for thought there...👍👍

I've bitten the bullet and ordered a Mud Stuff Heater Box. I'll fit the heater then see where everything lays and take it from there.
I was overthinking it - My spaghetti brain was just picturing my heater sat on top of a pile of spaghetti.... 😄

Thanks to all. 2002 Land Rover 110 Td5 Utility
1990 Suzuki GSXR 1100L
1980 Yamaha RD 350LC
1976 Yamaha RD 400C

6th Aug 2024 9:14am

sako243

Member Since: 08 Jul 2014
Location: Wales
Posts: 1204

1994 Defender 110 300 Tdi CSW Alpine White

An alternative which FridgeFreezer on Lr4x4 has done is install a 3l catch can on the return line (petrol though). Fuel from engine goes in top, return to tank comes out the top and the fuel heater pickup is in the bottom of the can. 3l is enough to run for about 48h on his Webasto. Doesn't have to bother with the fuel tank and to refill he just drives the vehicle. Ed
82 Hotspur Sandringham 6x6
95 Defender 110 300Tdi

7th Aug 2024 10:10pm

Evil Elsie

Member Since: 25 Feb 2023
Location: Cumbria
Posts: 189

Ooo, now that is a good idea..!!

Bloody hell - there's lots of good ideas with pros and cons for all.

Is there any love for simply fitting one of these fittings to/from the fuel tank Sender unit - or is it rubbish..??

https://www.ebay.co.uk/itm/355048999519

Cheers all 👍😁👍 2002 Land Rover 110 Td5 Utility
1990 Suzuki GSXR 1100L
1980 Yamaha RD 350LC
1976 Yamaha RD 400C

8th Aug 2024 2:44pm

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