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Ford 83-94 6.9 and 7.3L General Discussion of 83-94 6.9 and 7.3 Liter Ford Diesels

Block Heater Question

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Old Mar 9, 2014 | 08:15 PM
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Default Block Heater Question
I read somewhere that block heaters on old 6.9's can cause the blocks to crack. But Im not sure about mine because it is a 1987.

Any ideas?

It will make life 10xs easier with cold starting.
 
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Old Mar 9, 2014 | 10:21 PM
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Yes, it has a risk of block failure, I believe there were preventatives you can do to lessen the likelyhood, but I do not know what they are
 
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Old Mar 10, 2014 | 11:31 AM
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In 1985 they made the casting thicker around where the block heater is to prevent the cracking problem.
 
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Old Mar 11, 2014 | 02:19 PM
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Your clear there Zak ... i bee pluggin mine in every night when its below 40* for 5 years now ... no cracks here ...( except my neighbor ... think he smokes the stuff ) ..LOL
 
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Old Mar 11, 2014 | 05:21 PM
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Haha damn crackheads. But awesome thank you. It will make life so much easier when shes cold out.
 
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Old Mar 12, 2014 | 08:04 PM
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oh yeah ... easier on batteries, starter , GP's ... etc

and it wont make all that dang noise
 
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Old Mar 13, 2014 | 03:41 PM
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What style do you recommend?
 
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Old Mar 13, 2014 | 09:17 PM
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What do you mean styles?
 
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Old Mar 13, 2014 | 09:27 PM
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Theres like the oil drain plug, magnetic kind that sticks on the side, coolant type, just the probe type?
 
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Old Mar 13, 2014 | 09:37 PM
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The coolant type possibly
 
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