Heatsinks for HEI ignition module??

[Anonymous]

OK, I'm a newbie. I've purchased the DurasparkII dizzy, a GM HEI control module and the TFI coil. My question/concern is the heatsink for the HEI module.

Having never done such a project, what is an acceptable heatsink. I want to make sure that I don't fry it on the first day. Some say mounting to the fender is sufficient?? Is this true? Should I get some aluminum? If so, how much is enough?? I don't want to use trial and error...

Thanks in advance for the help. Just trying to make sure that I don't screw this up...

 

[Stubby]

Mounting it to aluminum would be best. Nount the whole thing so air can circulate around the aluminum.

How thick? A half inch should be plenty. If you could find a small heatsink it would be even better. There is some paste to help also.

 

[powerband]

I don't have a pic handy but I'm fabbing the GM HEI setup also.

For the heat sink I pulled an old PC power supply out of the garbage (PLENTY bad/useless ones around) and tore it open. I removed the main transistors from the finned heat sink and fastened the GM module to it with the included conductive goo. I then used a small angle bracket to make a mount to bolt it to the inner shock tower bolt. It will be out in the air stream and very accessible to DS wiring.

From another thread :
I tested a GM type HEI module with Clifford re-curved DS distrib. out of the engine and it works spinning distrib shaft with my fingers -(ZZap - yow)

http://fordsix.com/forum/viewtopic.php?t=34418

Powerband 8)

 

[Anonymous]

I used the heatsink from an old computer processor I can try to get ia pic of it tomorrow, turned out pretty nice

 

[Anonymous]

Thanks, it appears that the CPU heatsink is the best route. I would really appreciate any pictures that you guys have..

 

[rbohm]

8) when i do my hei module conversion i will use a heat sink from a computer processor. might even set it up with a fan as well.

 

[MustangSix]

The original application was inside the distributor, screwed to the bottom of the body. A big heatsink isn't really necessary. simply screwing it to the fenderwell will be sufficient, but a nice alluminum heatsink might extend the reliability. I have mine just screwed to a aluminum sheetmetal and attached to the frame.

 

[rbohm]

8) just remember to use the dielectric grease they supply with the module when you install it. otherwise the module will burn up.

 

[inline300]

If you have an OE radio laying around, you'll probably find the perfect size heat sink inside.


I took my hei conversion off my truck, anyone wanna buy a tfi coil, gm module? Was on the truck less than six month, this vehicle was driven a couple times a month.

 

[kspageddie]

I just mounted mine to small 1/4 plate of aluminum attached to the shock tower facing the front of the car.