Originally Posted by Judo
Reply With QuoteI reckon you can do better than a Defender heater for a county that does not have one. Worth noting that in forums there are lots of complaints about them not working very well, ie not putting out much heat. Have plastic heater tank and aluminium core, on which the fins and pipes seem too thin. Is in a big bulky box which takes up a lot of space. Removed mine with idea of doing some repairs and mods to it but instead made one using copper./ brass element from XA Falcon which is small by comparison but works at least as well. Aim was partly to leave room to make top of footwell level so air conditioner evaporator can be raised to give more passenger footroom before I put on new condenser - which goes in front of radiator only (NOT intercooler)
Am not familiar with plumbing arrangement on Isuzu motors for heaters. Seems to me that on 300Tdi this should be considered an integral part of the cooling system. There is no tap to turn water off and appears one would be undesirable. Heater circuit takes water from rear of motor and it goes back to water pump. Seems that reported head damage from overheating is usually around No 4. Probably this is less likely while water continues to circulate past it and through the heater. Inside the bulky heater housing, there are passages and baffles to allow air to pass through without going through heater element. Also I reckon the Defender heater air intake - through wing vent on top of left guard is an abomination. Takes up a lot of space and readily fills up with rainwater.
Probably for financial outlay and ease of installation a Series heater should be best for a County.
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