Xantia Bottom radiator Hose connection diameter/hose dia?

falling-out-with-my-car · Post by **falling-out-with-my-car** » 20 Feb 2010, 17:31

Hi, is anyone likely to soon remove a Mk2 1.9TDair cooled xantia coolant radiator please?

if so can you please measure the diameter of the bottom hose connection which would normally be on the drivers side of the car.

my reason for asking is that I want to buy a thermostatic coolant heater that fits in the radiator hose.

thank you in advance Nigel.

VertVega · Post by **VertVega** » 20 Feb 2010, 17:51

Is it OK if the hose diameter is from mk2, petrol, manual and air conditioned model?
In mine the upper and lower radiator hoses have inner diameter 39 mm, at the radiator connection end.
This connection end is wider than the rest of the hose where outer diameter is 39 mm.

(A short visit to convertunits.com/from/mm/to/inches gave 39 mm = 1.535 inches )

Edit: Hose wall thickness is 4 mm.

Post by **CitroJim** » 20 Feb 2010, 18:23

Be interested in more details of the heater Nigel...

Is this to give a nice warm car on frosty mornings?

Xantidote · Post by **Xantidote** » 20 Feb 2010, 23:04

Hi Nigel,

My old radiator, removed last month, is sitting outside. It's off my S1 1.9TD which does NOT have aircon. Check it out tomorow for you. I'm unsure whether the fact that it doesn't have aircon will make any difference. I assume the internal and external diameter of the bottom outlet is what you're after? Metric or inches preferred?

Regards

falling-out-with-my-car · Post by **falling-out-with-my-car** » 21 Feb 2010, 00:32

Xantidote.

the Heaters are measured in inches thanks for asking. the us minimum connection size for the heaters are 1.5 inches.

Vertvega, Not sure to follow your measurements or not, my xantia is a 1.9 TD Mk2 with air con so not sure at the mo, but thanks anyway.
will edit the question adding vechicle details.

Jim, if your interested go to ebay and search for zerostart and you will get onto the USA ebay and it will show you a list of different coolant heaters, much cheaper than a kenlowe but many rely on convection and are not pumped systems, if it is going to run over night with its own thermostat I dont think it will need a pump.

regards Nigel.

Post by **xantia_v6** » 21 Feb 2010, 08:01

Depending on the design of the cooling system, you need to think whether the natural recirculation is going to be through the radiator of the engine, you won't see a lot of benefit from heating the radiator.

Post by **CitroJim** » 21 Feb 2010, 08:21

That's a good point Mike..

I believe these heaters are usually plumbed into the heater circuit so that warm water will both flow into the heater and the engine block...

The thermostat will effectively stop any circulation if plumbed into a radiator hose...

Post by **myglaren** » 21 Feb 2010, 09:15

The ones we used in Sweden heated the engine rather than the cooling system. I don't recall how they achieved it but have a suspicion that it was an electric element in the sump, similar to an immersion heater.

One of our Scandinavian members would surely have more and current info on this. A unit sourced in Scandinavia would also be suitable for UK voltage without needing a step-down transformer.

Xantidote · Post by **Xantidote** » 21 Feb 2010, 09:29

I think Mike & Jim make good points - for a rapid initial warm-up, you'd be better with any heater in the heater matrix circuit. Depends what you are trying to achieve (warmer weather will be here soon, we hope!)

Question (before you get very involved in lots of work)- is your thermostat doing it's job properly, and not getting at all lazy. On my TD, the temperature gauge shows the temperature coming up to about 80 degrees in about 3-4 miles.

Dimensions of bottom radiator outlet connection you asked for, off my S1 1.9TD without aircon as follows:

Internal dia = 34mm (=1 11/32")
Outer dia = 37mm (=1 15/32")
Outer dia over the bulb lip on end of connection = 38.5mm (=1 1/2")

Just a thought - would the heater you put into a hose obstruct the normal flow of coolant?

Hope this helps

Post by **myglaren** » 21 Feb 2010, 09:40

Haven't found much on the Scandinavian option but there is some reading on it here and here.

SAAB were developing a snazzy ceramic exhaust system that retained the heat of the exhaust for up to eight hours and used it to keep the engine warm. Must have been shelved when GM took over.

VertVega · Post by **VertVega** » 21 Feb 2010, 10:35

For example engine block heater information can be found here --> Defa warmup applications.
Same company also provides hose heaters and oil heaters.
You can also check manuals by clicking "Support --> User Manuals or Brochures" link on top of the same page.

Edit: Find your engine heater: On the left side of the page,
Select CITROEN and XANTIA and click SEARCH for detailed information --> Defa warmup

falling-out-with-my-car · Post by **falling-out-with-my-car** » 21 Feb 2010, 11:08

CitroJim wrote:That's a good point Mike..

I believe these heaters are usually plumbed into the heater circuit so that warm water will both flow into the heater and the engine block...

The thermostat will effectively stop any circulation if plumbed into a radiator hose...

an inline fuel heater seems to work fine with convection mounted in the fuel line (I have one) so why not a coolant heater in a bottom hose?