Spal Fan Wiring Question

[samiam3356]

I am putting an m30 in my E30 no viscous fan and the AC intact and using the Spal as a pusher. What's a good way to mount the fan in this scenario?

Use Massive's brackets. They are awesome and very sturdy.

[Bearmw]

Thanks

[b*saint]

Hey man where you at in Western Mass? I live in westfield.

[Bearmw]

Agawam

[b*saint]

No way. What's your car?

[Bearmw]

right now 89 vert midnight blau with blue top,tons of mods(when will it ever end), and a fairly stout NA B35 going in this spring

[Frog]

I am putting an m30 in my E30 no viscous fan and the AC intact and using the Spal as a pusher. What's a good way to mount the fan in this scenario?

I used SPAL metal fan brackets, they worked great! Very very sturdy and neat! They slide into the fan's holding slits.

Link

Pretty simple, I only used 3 of the 4 brackets, and I just drilled a hole into the top flat vertical metal part of the radiator. I then just cut the extra length.

[immajackuup]

I used SPAL metal fan brackets, they worked great! Very very sturdy and neat! They slide into the fan's holding slits.

Link

Pretty simple, I only used 3 of the 4 brackets, and I just drilled a hole into the top flat vertical metal part of the radiator. I then just cut the extra length.

can you show pictures of your custom electric fan conversion?

[Frog]

^ sure thing. I really can't emphasize how sturdy these are. I am really happy with how it turned out:

[Jaxx_]

I used the factory AC fan bracket and I'm using the OEM fan switched via a toggle inside the car(eventually I'll use my megasquirt to handle this) to close to high speed blk/green, in place of a thermo switch.

There's some space between the fan and the radiator, of course, but it works well enough to cool it down to close the thermostat even idling in traffic. Granted, I don't drive the car on the street much, but it is nice there as a safety.


Maybe that explains things a bit better.

[CincinnatiKid]

Bumping this thread because I'm doing this, but my question is can I just run the power to both the high and low side of the radiator fan switch, then ground the fan or would it overload the aux wires?

[jlevie]

If the load didn't burn out the wires, I suspect it would burn out the thermo switch. You need to use a 30a relay (and fuse) to control the fan power.

[Bearmw]

Thanks for the pics and what not but I'm interested in mounting a Spal with the intact (functioning) AC system and E28 radiator. Who's done that? Any pics?

[CorvallisBMW]

Just mount the fan on the A/C condenser, where the old stock unit was located. Easy.

[sarcasmkillsme]

If you use the stock aux switch, which isn't a good idea. You must tie the low and high switch wires together. If you use just the low temp switch, if the temperature rises high enough to activate the high temp switch, the low switch opens. That would turn off the fan when it is most needed. If you tie the wires together, there might be a problem with the aux fan control. I've not looked at the wiring diagrams to see.

The standard aux fan operates at 91C & 99C. The low side is really too high and you should use a switch that operates a few degrees above the thermostat rating. For the stock 80C thermostat a thermo switch rated for 82-83C is what you want. BavAuto and other places have that thermo switch.

To add a manual control you'd run a wire from #85 above to a toggle switch and from the switch to ground.

Based on this diagram, why would the low switch open once the high temp closes? Why wouldn't they just be open at the same time. I'm getting conflicting information about this.