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Old 09-12-2017, 09:41 PM   #1
B757captain
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Default ICM Installation

I'm going to replace the ICM on my 93 LT-1 and the instructions say to use thermal grease. Question: Will dielectric grease work, is it the same thing, or do I need to find actual thermal grease? If so, brand?

I looked through all the posts looking for an answer, no luck.

Thanks!
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Old 09-12-2017, 10:36 PM   #2
Kevova
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Dielectric grease or silicone paste will work
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Old 09-13-2017, 02:10 AM   #3
MatthewMiller
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Thermal grease is a different thing than dielectric grease. It is intended specifically to transfer heat efficiently to the sink. Dielectric grease is for electrical insulation: it is built to resist the conductance of electricity without regard to its conductance of heat. It may improve the transfer of heat, but thermal grease will be better at it. I was able to find some at Best Buy in their computer parts section.
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Old 09-13-2017, 09:50 AM   #4
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Here are more options than you can shake a heat sink at.
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Old 09-13-2017, 11:39 AM   #5
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Quote:
Originally Posted by MatthewMiller View Post
Thermal grease is a different thing than dielectric grease. It is intended specifically to transfer heat efficiently to the sink. Dielectric grease is for electrical insulation: it is built to resist the conductance of electricity without regard to its conductance of heat. It may improve the transfer of heat, but thermal grease will be better at it. I was able to find some at Best Buy in their computer parts section.
Use the right stuff.
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Old 09-13-2017, 09:51 PM   #6
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I found some heat sink paste. Thanks guys!
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Old 09-15-2017, 04:47 PM   #7
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Auto zone sells the right stuff. Dielectric grease doesn't conduct heat. Heat sink paste typically doesn't hold up in the environment it will be in. You want automotive thermal paste. It's a 2 pack from auto zone for like 5 bucks. Lifetime warranty too, lol.
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Old 09-15-2017, 05:25 PM   #8
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Auto zone sells the right stuff. Dielectric grease doesn't conduct heat. Heat sink paste typically doesn't hold up in the environment it will be in. You want automotive thermal paste. It's a 2 pack from auto zone for like 5 bucks. Lifetime warranty too, lol.
That's what and where I found it.

I applied the paste between the ICM and aluminum heat sink, the heat sink and the bracket, then added some washers to create a stand-off from the cylinder head. Hope that is enough, based on all the threads here concerning the ICM!

Good news, she runs! I will add some pics and info in a new thread soon.
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