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Old 01-24-2005, 01:27 PM
Coming back from burnout
Join Date: Jun 1999
Location: in the Pacific Northwest
Posts: 2,274
What is the Lifespan of a Blockheater?

How long do these things last before the Heating Element dies? I pulled one of my 85 300D only to find out it wasnt working because of Tarnish, after cleaning it I would like to put in another engine..Whats the Ohms for a resistance check?

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Old 01-24-2005, 01:43 PM
michael cole's Avatar
Registered User
Join Date: Apr 2002
Location: waterloo ontario
Posts: 730
the original blockheater in my 80 300sd is still strong.and it gets used all winter as i have a preference for fast warmup
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Old 01-24-2005, 03:30 PM
phidauex's Avatar
BioDiesel Hopeful
Join Date: Oct 2004
Location: St. Louis, MO
Posts: 806
My functional, but stock, block heater has 42 ohms of resistance, which is 342 Watts, and about 2.85 amps, which sounds about right to me.

"That f***in' biodiesel is makin' me hungry."

1982 300TD Astral Silver w/ 250k (BIO BNZ)
2001 Aprilia SR50 Corsa Red w/ 5.5k (>100 MPG)

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Old 01-24-2005, 03:32 PM
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Join Date: Dec 2002
Location: New Jersey
Posts: 218
Does anyone know how long you can keep the block heater plugged in. Days, weeks months while not using the car in cold weather?
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Old 01-24-2005, 05:04 PM
Hatterasguy's Avatar
Join Date: Nov 2002
Location: Milford, CT
Posts: 19,307
I don't see any reason why you couldn't leave it plugged in all of the time. Except that it would be a waste, 2-3 hours is all it needs to work. But the electric company will sure love you!
2020 GMC Sierra Denali
2007 Tiara 3200
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Old 01-24-2005, 06:32 PM
Posts: n/a
Mine quit three weeks ago.
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Old 01-24-2005, 06:54 PM
Registered User
Join Date: Oct 2004
Location: Geographically challenged on the S.W shores of Lake Michigan in S,E Wisconsin
Posts: 1,160
not certain

when the one in blondie quit. but it was before i got it,

reds functions well for the second week in a row.4.25 hrs work. charged 3.5. about 275$.

the zerostart in line works well in blondie when i have had it on. since the heater fan quit(the fuse was burned and shorted.) i won't drive in the cold.

[1981 300 td tdidi 165500 dark brown/palamino-Brownie-mine-3k miles of ownership
1983 240d 162+++ Anthricite grey w/ henna red interior and hella lights-wifes car-Red

the above two cars are for sale
and can be seen on the cars for sale thread here. pix also available.

240d-144+ Manilla Yellow w/ palmino interior-greasecar kit-Blondie-the college kids car

23" gt 21 speed still on original tires-still got the nubs
21" khs tandem
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