I copied Mance's design:

<img src="http://pictureposter.audiworld.com/81050/dscf0076.jpg">

Here is the blank.



<img src="http://pictureposter.audiworld.com/81050/dscf0078.jpg">

Milled.



<img src="http://pictureposter.audiworld.com/81050/dscf0080.jpg">

View 1.


<img src="http://pictureposter.audiworld.com/81050/dscf0081.jpg">

View 2.

I am always surprised by how hot the strut bar is when I open the hood, lean in &amp; try to brace myself by putting my hand on it.

the photo server must off been down for a little bit

A heat sink such as he's made has been shown to keep that module almost 100*F cooler! That module fries and you're dead in the water where the car sits!

that has cool/cold air constantly moving across it's base surface under the airbox lid and stays MUCH cooler than the Pre-B5 modules.

what about putting the pos on a old PC CPU heat-sink??

It is close to the dimensions of the POS.

What about mounting the POS on or under a PC CPU Heat sink??
by "on or under" I mean "under" the sink as in your and 4AudiQ set up or "ON" as in ot top of the POS (closer to front of car)

Also, waht about some Thermal Paste...the stuff in between PC CPU's and Heat sinks ??

Took about 12 seconds....


Now I am just wondering if I should use thermal paste or not??

I'm gonna see what I can dig up.<ul><li><a href="http://forums.audiworld.com/12v/msgs/60513.phtml">This is a very old issue thats been known &amp; addressed in Europe for well over a decade using CPU sinks in DIY applications.</a></li></ul>

<ul><li><a href="http://forums.audiworld.com/12v/msgs/60182.phtml">Copper heat-transfer paste</a></li></ul>

Only because I already have a tube that I use for CPU's. (I'm a computers/electronics geek) ;]<ul><li><a href="http://www.arcticsilver.com/as5.htm">http://www.arcticsilver.com/as5.htm</a</li></ul>

I have to wait for my drill to charge so I can drill out some holes in the heat sinks for mounting to the firewall..

<a href="http://s4.photobucket.com/albums/y145/pharoah007/?action=view&current=DSC03647.jpg" target="_blank"><img src="http://i4.photobucket.com/albums/y145/pharoah007/DSC03647.jpg" border="0" alt="Photobucket"></a>
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The silver heat sink is a "press fit" nice and tight, I filed down the heat sink to fit with a hand file.

The fan will prob not go on right away as I have to figure out a circuit to use as a trigger for a relay to power the fan. I might just end up using the headlights as I have a terminal still available on one of the existing headlight relays (H.I.D.)

I wanted something that was permanent, heavy-bodied and wouldn't require periodic or bi-annual inspection/replacement. My CPU stuff is fretfully light-bodied and runs like water off a ducks back if water is poured over it. The copper stuff stays put even when sprayed directly with high pressure water at a car wash.

<center><img src="http://pictureposter.audiworld.com/711/posheatsink5.jpg"></center><p>
as the sinks are approximately the same "foot-print" as the module. In order to cool the module efficiently heat needs to be drawn "out and away" from the module so it has a chance to dissipate heat via sink surface area and distance from the heat source. Same way a MAF module is allowed to cool when bolted to the alloy MAF housing. The key to any good heatsink is surface area and distance away from the heat source as well as airflow over the sink surface area around heat source. If the sink is approx same size as the module it's cooling then the module blocks the sink from airflow and migratory heat dissipation. Then you've "boxed-in" your sink. Think motorcylcle heads/cylinders here, ie; draw the heat "away" from the source FIRST then dissipate it over a LARGER surface area.

AS5 is far superior to standard "white" CPU paste, and much, much, thicker. So thick (at room temp) that it's hard to squeeze out of the container.

I think I'll give it a try simply because I have it around if you think the temp rating is sufficient...

and hovers just below 200F (198F) when the car is moving forward. Your product is good to 356F. Just make sure it's not water soluble and you should be fine. Put a small dab of it on your index finger and see if you can rinse or rub it off by rubbing your thumb &amp; index finger together while holding under hot running tap water.

Hottest my POS gets since the heat sink is 95F when sitting still with hood closed and closer to 82F when car is rolling.

seems things are so tight back there due to my 90 Degree silicone elbows that i can net even get a ratchet head Phillips tin there to get the POS unmounted :(



I guess this will have to wait until spring when I swap my P&amp;P'd I.M. on to the car.