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Old 09-23-2013, 09:45 PM   #21 (permalink)
Blue Angel
EcoModding Apprentice
 
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Join Date: Feb 2013
Location: Ottawa, ON, Canada
Posts: 190

Previous Car - '12 Chevrolet Cruze Eco MT
Team Chevy
90 day: 44.29 mpg (US)

535d XDrive - '16 BMW 535d M-Sport
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Quote:
Originally Posted by oil pan 4 View Post
You don't need forced circulation for 1000w.
Waste of time + money.
I disagree. Any heater, regardless of output, will certainly benefit from the use of a circulation pump.

Quote:
Originally Posted by oil pan 4 View Post
If you still want a pump don't use a dish washer pump, that sounds like a bad idea on so many levels. Get something that can handle engine bay heat, hot coolant and cooling system pressure for years.
Agree completely, though I'm not sure the DW pump would be a complete failure... I was planning to do some testing before putting it in (my residential water supply is ~60 psi), and locating the heater so it would work properly even without the pump operational. Even at that, there would still be several long term durability questions left unanswered.

I may have an OEM auxiliary coolant pump like the one you've suggested on it's way soon. If it works out I will feel much better knowing I've got the right tool for the job installed under the hood. I will probably install ball-style shut off valves in line with this heater/pump system just in case.

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2016 BMW 535d
4100lb XDrive Eco-Yacht

Last edited by Blue Angel; 09-23-2013 at 10:17 PM..
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