Larger Condenser fan

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aeronotix

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Hi,
I have searched for AC upgrade.
There are quite some info available on compressors & refrigerant discussions but I could not find any info on condenser fan upgrade.
The fan seems very small and it seems that space is available for a larger one.
Any input?
Stephane.
 

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I use the 2-speed condenser fan from a 90's BMW as my main cooling fan. It fits right in that space on some custom brackets I made.
 
I have yet to look into this, but I installed a Spal fan in my e39 sedan. They make several sizes, including double fans side by side that I plan to explore.
 
Just a thought, but how much air do you want to block to the radiator (with a larger fan(s) footprint) when this is not running?
 
I used a single Spal fan in my recent upgrade. It is very noisy, it sounds like a gas turbine, definitely not the way to attract stares for your coupe. I am looking to replace it, anyone got a part number for an aftermarket fan they are happy with?
 
Yes, it is noisy. Sounds like a propeller airplane taxiing around on the tarmac.
 
Boneyards have plenty of the 1980's 5,6,7 series aux fans.
Easy to install. Add a e12 fan shroud and a bav auto 82 degree sensor
and you are done.
 
sfdon said:
Boneyards have plenty of the 1980's 5,6,7 series aux fans.
Easy to install. Add a e12 fan shroud and a bav auto 82 degree sensor
and you are done.
Click to expand...

Don are you saying that you switch the fan to run any time the coolant temp hits 82 degrees? I thought the existing fan is switched to go on when the a/c is switched on (although I don't have a wiring diagram).
 
I have it both ways-

ac on turns on aux fan controlled by relay

Too hot turns on aux fan controlled by same relay

Use a diode from temp sensor to compressor so the temp sensor doesn't back feed the ac compressor and turn it on at the wrong time.

Tiny current on this circuit- only energizing the relay.
 
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