S50 electric PUSHER fan option

[e30s50dan]

looking for options on a good pusher fan for my S50 swap.no evap,no ac..this is a street but will be at the track and dont want the overheating BS..did a search..looking at the 16 in SPAL/and Summit 16in...any ideas..

[e30_325es]

I run an ebay 16" fan on it's own circuit and switch with a stock e30 thermostat, mishimoto rad, upgraded water pump. no issues with s50 with cams and pistons and autocrossing.

[e30s50dan]

didnt you trust the factory wiring or the fan pull allot of amps?!

[surebimmer]

I run the stock aux fan with a lower temp switch 80/88C with no condenser mounted with stock euro brackets in front of the radiator. Also have aftermarket Alum rad from ireland with 80C T-Stat. Ran the car at a Thunderhill track 3 weeks ago temp was 80* outside and have no overheating issues.

[sharky]

I bought the Mishimoto 16" pusher off ebay, half the price of Spal and is damn good. That with a Mishi radiator, BMW coolant /water wetter low thermo and switch and have it wired just like the aux fan. Not one problem and even after beating on it, getting stuck in traffic at 100 degrees out it barely goes over half but goes right down as soon as I am rolling. Highly reccomended setup.

[Nick325is]

I'm running a Spal pusher on my m52 swap. I've got it wired to turn on once the temp gauge gets over midway on the gauge. I've been running just that fan with a lower temp thermostat and stewart racing water pump with no issues at all.

[dude8383]

If you're not too worried about noise, I have a spal fan for you that'll work.

[e30s50dan]

whats the depth of these fans...is there an issue hitting the bumper.Seen some fans that are 4in depth.no sure if there is room

[sharky]

I have mine infront of the AC condensor and there is enough room, there is still enough room to squeeze a oil cooler infront for the AA SC

[nmlss2006]

You can run a SPAL high performance, the 88mm variety, in front of the AC condenser, so if you don't have that, you'll be fine. As to the wiring, look at the SPAL spec sheets: none of these pull more than 20-22A at the most, so you'll be fine AND you get to keep the 2 speed functionality: I have the SPAL 3300 m^3 and while it's true that my engine will NEVER overheat, it's also true that the noise is significantly higher than that of the engine at 2000RPM.
Edit: if you use this as your main fan, replace the normal 2 temp switch with the Z3 1.9 unit that kicks low in @80C and high in @88C.

[e30s50dan]

thx nmlss2006...thats a big help.!!!...now where did i put that spal wiring diagram.. hmmm

[dude8383]

thx nmlss2006...thats a big help.!!!...now where did i put that spal wiring diagram.. hmmm

you can probably find it on their website.

[psyber_0ptix]

so you'll be fine AND you get to keep the 2 speed functionality: I have the SPAL 3300 m^3 and while it's true that my engine will NEVER overheat, it's also true that the noise is significantly higher than that of the engine at 2000RPM.
Edit: if you use this as your main fan, replace the normal 2 temp switch with the Z3 1.9 unit that kicks low in @80C and high in @88C.

Sorry to dig up a thread, but instead of starting another, i just seek clarification using information already present.

How exactly do you wire these fans then to accommodate the dual speed?
Just attach both positive fan wires (black/blue + black/green) to positive on fan, and ground to brown?

Is there any need for a diode or will the relay on low speed shut of when it kicks the high speed relay on?

I'm finishing up an s50 swap and my stock aux fan is very much stuck...and ironically my radiator endtank cracked. I have a spal coming in but wasn't sure which wire to hook it up to after upgrading to the lower temp e36 m42 switch.

[e30s50dan]

Well I just installed one from Jeg's... 16in 2200 cfms 9 amps..So far so good!

[psyber_0ptix]

wiring? both positives on the harness side to the single on the fan?