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Cippo



Member Since: 24 Oct 2012
Location: Florence
Posts: 19
Italy 2009 Defender 110 Puma 2.4 SW Zermatt Silver
Hot Water using EGR radiator coolant pipes in Puma Defender
Hi all, I have a project I would like to start soon: getting hot water using the coolant pipes that serve the EGR valve on Puma.

My plan is to blank the EGR (phisically and via software) then disconnect the pipes of the coolant that reach the EGR valve and attach those to an heater exchanger. In this way I assume I could warm the water from a water tank.

Has anybody already done that? Any problem in disconnecting the cooling pipes from EGR if EGR is not used anymore?

Thank you for your comments.
Post #940259 30th Jan 2022 8:40pm
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Ianh



Member Since: 17 Sep 2018
Location: Essex
Posts: 1952
United Kingdom 
I’m assuming you have the 2.2 as that has coolant pipes to/ from the EGR cooler then to and from the EGR. Where as the 2.4 has them to / from the EGR cooler but not via the EGR.

If you are looking to blank and software delete the EGR then I would contemplate completely bypassing the cooler and the EGR if it’s a 2.2 and the cooler if it’s the 2.4.

Also if a 2.2 with a DPF the DPF will need to be removed and software deleted.

As for then using to feed a heat exchanger. Plumbing wise I see no problem, however what about achieving and maintaining correct engine coolant temperature , how would this work given the draw of the heat exchanger ?
Post #940264 30th Jan 2022 9:26pm
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Penfold_6290



Member Since: 22 Sep 2021
Location: Dorset
Posts: 312
United Kingdom 2002 Defender 110 Td5 CSW Epsom Green
My understanding was that DPF removal resulted in an MOT fail?
Post #940280 30th Jan 2022 11:37pm
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Ianh



Member Since: 17 Sep 2018
Location: Essex
Posts: 1952
United Kingdom 
^^^^^^^^^

Op is not in uk, but yes dpf or egr deletion or removal is an mot fail in uk.
Post #940281 31st Jan 2022 12:14am
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Penfold_6290



Member Since: 22 Sep 2021
Location: Dorset
Posts: 312
United Kingdom 2002 Defender 110 Td5 CSW Epsom Green
Ah, yes…his nationality had completely escaped my notice…valid point!
Post #940284 31st Jan 2022 12:31am
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Cippo



Member Since: 24 Oct 2012
Location: Florence
Posts: 19
Italy 2009 Defender 110 Puma 2.4 SW Zermatt Silver
Hi Ianh the engine is in fact 2.4.
Regarding achieving and maintaining correct engine coolant temperature this shouldn't be a problem as if the water for the shower will not circulate into the heat exchanger during driving the heat should not dissipate too much from the cooling system so to have any relevant effect on regular engine operation.
Post #940293 31st Jan 2022 9:28am
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