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 What in the world are these?

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toldsimply
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toldsimply

Number of posts : 219
Home City : Maidenhead, UK
Model and year : 1993 Toyota Hiace Super GL 2.8 Litre with selectable 4WD
Registration date : 2012-05-09

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PostSubject: What in the world are these?   What in the world are these? Icon_minitimeMon Oct 29, 2018 12:32 pm

While playing under the van the other week I found a series of water pipes (?), that are seriously corroded. They run left to right a little bit behind where the driver and front passenger seats are. It also looks like they have been seeping a bit too. Does anyone know what these are called as I need to replace them.
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toldsimply
Been here a while
Been here a while
toldsimply

Number of posts : 219
Home City : Maidenhead, UK
Model and year : 1993 Toyota Hiace Super GL 2.8 Litre with selectable 4WD
Registration date : 2012-05-09

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PostSubject: Re: What in the world are these?   What in the world are these? Icon_minitimeMon Oct 29, 2018 12:35 pm

What in the world are these? 20180912What in the world are these? 20180912What in the world are these? 20180912
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toldsimply
Been here a while
Been here a while
toldsimply

Number of posts : 219
Home City : Maidenhead, UK
Model and year : 1993 Toyota Hiace Super GL 2.8 Litre with selectable 4WD
Registration date : 2012-05-09

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PostSubject: Re: What in the world are these?   What in the world are these? Icon_minitimeMon Oct 29, 2018 12:36 pm

This is the first time I've posted pictures up, and there's a few duplicates there!
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GPW
Hiace Master
Hiace Master
GPW

Number of posts : 1028
Home City : Cambridge, UK
Model and year : Model: KD-KZH100G-MRPGT
Year: 1996
Colour: 4K1
Trim: FN42

Registration date : 2016-07-16

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PostSubject: Re: What in the world are these?   What in the world are these? Icon_minitimeMon Oct 29, 2018 5:38 pm

Not sure, your 2.8 is slightly different from mine. You need to follow them!
Maybe possible by looking in from the top with a torch?

Possible candidates are:

A/C pipes
Coolant (heater) pipes
Automatic transmission coolant pipes
Oil cooler pipes

Find out what's the stuff on the ends - oil? Coolant? Careful of coolant, it's toxic.
I've got no going from side to side after the engine on mine.
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mickB
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Number of posts : 244
Age : 49
Home City : Coventry
Model and year : 1992 SC 2.4TD
Registration date : 2016-07-06

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PostSubject: Re: What in the world are these?   What in the world are these? Icon_minitimeMon Oct 29, 2018 8:06 pm

Rear heater coolant pipes, mine has them too, on the drivers side behind the big side trim panel is the rear heater blower, I assume the pipes will route through somehow for rear heating, I undershield the crap out of mine along with the underside of the floor
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djathens
Not so new now
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djathens

Number of posts : 79
Home City : Portland, Oregon, USA
Model and year : 1991 Super Custom Limited 4WD LH107W
Registration date : 2018-03-07

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PostSubject: Re: What in the world are these?   What in the world are these? Icon_minitimeTue Oct 30, 2018 2:21 am

Those look like rear heater core lines. Mine are corroded too and were leaking at the junction heading up into the rear passenger area. I bypassed the circuit to stop the leaks until my upcoming service where the hard lines will get replaced with soft lines.

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GPW
Hiace Master
Hiace Master
GPW

Number of posts : 1028
Home City : Cambridge, UK
Model and year : Model: KD-KZH100G-MRPGT
Year: 1996
Colour: 4K1
Trim: FN42

Registration date : 2016-07-16

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PostSubject: Re: What in the world are these?   What in the world are these? Icon_minitimeTue Oct 30, 2018 9:44 am

If you look in the engine bay (under the drivers seat panel!!) you can see the coolant take-off points for that entire circuit. A possible option for the energetic would be to take the side panel off completely and remove ALL the relevant piping, radiator and airbox and replace it with a diesel warm air heater that could be integrated to the existing fan switch.

This upgrade costs about £130 and a certain amount of effort but may provide a better solution.
https://www.ebay.co.uk/itm/12V-2000W-LCD-Monitor-Air-Diesel-Heater-PLANAR-2KW-for-Car-Trucks-Motor-Homes-UK/142935606385

A small 8mm brass T piece into the fuel feed hose next to the tank would provide a suitable source of fuel.
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Hiace4wd
Hiace Master
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Hiace4wd

Number of posts : 745
Home City : Netherlands
Model and year : 1994 Toyota Hiace 4x4 DIY camper
Registration date : 2016-02-01

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PostSubject: Re: What in the world are these?   What in the world are these? Icon_minitimeThu Nov 01, 2018 4:43 am

I have a Planar and like it, but only with the thermostat. It is nice for a campervan when standing still.

However in this case you may just want to fix it if you travel more often with people in the back seat.
It is just piping that can be replaced by universal stuff. You could just buy long hoses ajd replace or bypass all the metal ones, right from the T section in the engine compartment.

Our lwb hiace with sliding windows everywhere can be cold in the back while in the front seats it is fine.
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toldsimply
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toldsimply

Number of posts : 219
Home City : Maidenhead, UK
Model and year : 1993 Toyota Hiace Super GL 2.8 Litre with selectable 4WD
Registration date : 2012-05-09

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PostSubject: Re: What in the world are these?   What in the world are these? Icon_minitimeTue Nov 06, 2018 12:49 pm

Thanks guys. Haven't checked the board for a while but great explanations, thank you.

So just to confirm I'd be okay to replace the metal piping with strong rubber stuff.

Can't say I use the rear heat often, but when the kids sit in the back during the cooler months it's dead useful. Wouldn't get that in a VW (I think)!
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GPW
Hiace Master
Hiace Master
GPW

Number of posts : 1028
Home City : Cambridge, UK
Model and year : Model: KD-KZH100G-MRPGT
Year: 1996
Colour: 4K1
Trim: FN42

Registration date : 2016-07-16

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PostSubject: Re: What in the world are these?   What in the world are these? Icon_minitimeTue Nov 06, 2018 3:03 pm

toldsimply wrote:
Thanks guys. †Haven't checked the board for a while but great explanations, thank you. †

So just to confirm I'd be okay to replace the metal piping with strong rubber stuff.

Can't say I use the rear heat often, but when the kids sit in the back during the cooler months it's dead useful. Wouldn't get that in a VW (I think)!

Yes, just get quality heater hose of the right size and some clamps. Maybe use two clamps together as when you cut the metal pipe there will be no 'flare' left on it.

Some VWs have rear heating, at the camper show last month once you got into to £55k - £67k bracket they even had blown air heating, much like the bigger luxury Ducato camper class at £45k.
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toldsimply
Been here a while
Been here a while
toldsimply

Number of posts : 219
Home City : Maidenhead, UK
Model and year : 1993 Toyota Hiace Super GL 2.8 Litre with selectable 4WD
Registration date : 2012-05-09

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PostSubject: Re: What in the world are these?   What in the world are these? Icon_minitimeThu Nov 08, 2018 12:43 pm

I can't get over the price of a VW campervan compared to a motorhome. Does seem like daylight robbery by VW.
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GPW
Hiace Master
Hiace Master
GPW

Number of posts : 1028
Home City : Cambridge, UK
Model and year : Model: KD-KZH100G-MRPGT
Year: 1996
Colour: 4K1
Trim: FN42

Registration date : 2016-07-16

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PostSubject: Re: What in the world are these?   What in the world are these? Icon_minitimeThu Nov 08, 2018 2:03 pm

toldsimply wrote:
I can't get over the price of a VW campervan compared to a motorhome. Does seem like daylight robbery by VW. †

Yes, I am constantly amazed how much they are.

But I think you are paying for the heritage too, a lot of things are carried forward through the models. For instance the T6's inherit from the T5 the paint finish issues, the leaking EGR coolant into the engine and gearbox and the leaking sliding side windows.
Also the camper has the porta-loo, so much more adventurous than the bigger campers and their boring cassettes.

The T6 also has of course the Euro-6 diesel, what you get from VW however is randomly leaking inlet air systems that over-fuel the engine filling up the DFP with soot, which then needs constant 'regeneration' which kills the fuel economy even more.

All the bigger Fiat Ducato has to compete is boring reliability and much more space and load carrying for a lower price that uses about the same amount of fuel as a well sorted VW.

I guess that's why we got Toyotas, I'm driving mine around as much as possible now before the winter sets in, it's quite a fun drive and I like the high seating position!
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toldsimply
Been here a while
Been here a while
toldsimply

Number of posts : 219
Home City : Maidenhead, UK
Model and year : 1993 Toyota Hiace Super GL 2.8 Litre with selectable 4WD
Registration date : 2012-05-09

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PostSubject: Re: What in the world are these?   What in the world are these? Icon_minitimeTue Nov 13, 2018 1:44 pm

I hear you GPW!

I spent ages researching VW vans and following the herd. Must have read VW camper and Bus magazine for 3 years. It always seemed to articles about what to do WHEN you break down. Fell over the Hiace's and have never looked back. It's my daily driver and I love it. Except when there's lots of uphill's!
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GPW
Hiace Master
Hiace Master
GPW

Number of posts : 1028
Home City : Cambridge, UK
Model and year : Model: KD-KZH100G-MRPGT
Year: 1996
Colour: 4K1
Trim: FN42

Registration date : 2016-07-16

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PostSubject: Re: What in the world are these?   What in the world are these? Icon_minitimeMon Dec 03, 2018 6:44 pm

As an update to this I have now removed my rear heater and those metal tubes you have there. This is because I've removed the interior side panels and will be fitting a 2kw 'parking' diesel heater in that area as part of my camper conversion, a decision of crushing inevitability

Now I can see the jubilee clip is non-standard and yes it's seeping coolant.

I have a spare set of those metal tubes now BTW if you want them, they are rust free but the odd end is slightly oval where I got the rubber pipes off.
My advice however is this:

1. When you disconnect the pipes push up a hosepipe and flush the heater matrix, quite a bit of sediment came out of mine and that's despite recently changing the coolant.

2. Don't use metal, use decent 15mm plastic straight connectors and rubber hose, there is no reason for any metal to be down there in that area at all.

Hope that helps!
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toldsimply
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toldsimply

Number of posts : 219
Home City : Maidenhead, UK
Model and year : 1993 Toyota Hiace Super GL 2.8 Litre with selectable 4WD
Registration date : 2012-05-09

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PostSubject: Re: What in the world are these?   What in the world are these? Icon_minitimeMon Dec 10, 2018 1:36 pm

Thanks GPW. I'm tempted to buy your metal tubes, but then I could be in the same boat needing to replace them again in a few years (although as far as I know the first lot have done 24 years but a lot of that was in Japan without the salt on the road. where would be the best place to source some decent rubber hose do you think?
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GPW
Hiace Master
Hiace Master
GPW

Number of posts : 1028
Home City : Cambridge, UK
Model and year : Model: KD-KZH100G-MRPGT
Year: 1996
Colour: 4K1
Trim: FN42

Registration date : 2016-07-16

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PostSubject: Re: What in the world are these?   What in the world are these? Icon_minitimeMon Dec 10, 2018 2:49 pm

eBay has a huge selection of quality coolant hose and plastic in-line connectors so I'd use those instead of more metal, it makes no sense to me to use metal there, even the heater valve is plastic.

The pipe is 14mm so if you get that or 15mm coolant tube and some connectors if would be fine.

I think you'd only need a couple of metres of hose and 2 or 3 straight connectors and a set of appropriately sized stainless steel clips, and maybe one or two appropriately sized stainless P-clips to hold the pipe to the van.
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