changing dis module

[DEMONICSHO]

so im gonna change the icm, ive read somewhere to use heat sink grease where it attaches to the manifold, however in my all data account it says to use dialectric grease. are these not two different things? what did you guys use?

 

[SHOZ123]

The Ford CD says to use dielectric grease.

 

[DEMONICSHO]

thank you

 

[Eric VerValin]

Just make sure there is grease around where the holes are at and you should be good. Its a 'pressure-type' connection, and that is where you would get your best ground from. I sanded mine down good, esp in the corners, and on the intake side. But here is also a thought.. I know what ford says, and I know people have DIS ground issues too. My thought on this is ... when I hook up switch gear at work, on a 4000Amp / 480 Volt service using aluminum cable, I have to use 'noalox' on it. Keeps out oxygen, eats thru alum-oxide, and is an anti seize lubricant to boot. If there is something better than this for that application, I'd surely love to know. I will fail an inspection if my wire isnt drenched in this stuff. Without it it corrodes, and after time the connection starts to go to crap, and all aluminum conductors as feeds, come loose after time, requiring maintenance re torquing. Big P.I.T.A.

http://www.idealindustries.com/IDEAL-EZ/products.nsf/ItemMasterLookup/p30-024?OpenDocument

 

[SHOZ123]

The two bottom screw holes are the ground points....

 

[SHObill]

Just run a ground wire from the rear lower DIS mount to the firewall where the other grounds attach on the pass side. Make sure those are all clean & tight! I run a permanent ground wire there. That way you do not have to rely on the ground path from different materials of the cast aluminium tanks,steel brkts & bolts! Esp if you have powercoating/painted parts! I keep my DIS module spaced away from the hot manifold as it produces less heat than the manifold does. There is no need for that dielectric grease. Its actually a silly place to mount it esp on an MTX!

 

[pjtoledo]

Dielectric grease is an insulator, it has nothing to do with getting a good ground. What it does do, is to conduct heat, and to a lesser extent prevent corrosion. Its there to get a good transfer of heat from the ICM to the manifold, and to prevent oxidation between the two which would prevent heat transfer and result in the ICM possibly overheating.

 

[SHObill]

The problem is that the intake crossover its mounted to gets much hotter from heat soak than the DIS its self will ever produce. So your are conducting heat towards the DIS which is bad for any electronic device.

 

[dpsutphin]

You can actually use either one. They both do the same thing, conducting heat away from the DIS. I use heat sink paste, and have never had a problem. I don't know all the technical details, but the heat sink paste seems to be a bit better at keeping the heat away from the DIS.

 

[SHObill]

I repeat-design intent is wrong on our SHO application-

The problem is that the intake crossover its mounted to gets much hotter from heat soak than the DIS its self will ever produce. So your are conducting heat towards the DIS which is bad for any electronic device.

 

[aryanramsey]

where would you find the heat sink grease or paste and where do i apply it when i change the dis?

 

[LOUDSHO92]

Any computer store will have it, I do not run it as you need a very thin film of it. In fact poeple who have too much run into problems. It does on the Back of the DIS.

 

[doclees]

I have issue with heat sink paste. If in computer application we use heat sink paste between the CPU and heat sink fan to improve conducting heat away from the CPU why would we want to use this principle with the DIS/intake contact? If the intake is producing heat that is harmful to the DIS then heat sink paste would allow a greater flow of heat to the DIS. Is it possible the DIS is producing more heat than the intake? Sounds like an experiment. I miss my SHO!

http://k0swi.microlnk.com/REVIEW/BATTERY/BOAT/DIELECTRIC GREASE.htm
This shows some impressive use of dielectric grease. I think I will redo connections using this method.