mark 8 fan switch

[4.6rx7]

installed a mark 8 fan and was wondering if 198 on /189 off would be ok for a 180 degree thermostat or should i use a 180 on 171 off

 

[HISSIN50]

The first one is just right.

If you ran the second one, the fan would never shut off once the t-stat opened.

 

[86T-Top]

Where are you going to get the 198 / 189 switch from?


Thanks

 

[LiquidGT]

Where are you going to get the 198 / 189 switch from?


Thanks

The 198/189 switch comes from a late 70s VW, it uses a M22 thread so you'll need to get a 3/4 drill bit and a M22-1.5 tap.

I've been running a 200-185 GM style switch on a Taurus fan for two weeks now and I'm very pleased with the set up. It uses an easier to find 3/8 npt thread tap. Mine always activates at 195-188 everytime.

I bought the switch from Mid America Motorworks the switch and the harness is only $20. 1981-91 Low Temperature Electric Cooling Fan Switch - Mid America Motorworks

 

[4.6rx7]

would this switch work turbo GN buick has a 203 on 187 off what is the normal operating temp for a 180 t-stat

 

[LiquidGT]

I have a 180 thermostat BTW; the switch I have listed and the GN switch (if its really a 203-187 ?) is made for a 180 thermo.

I also found a place where you can get a GM style 210-200 switch for a 195 thermostat.

 

[Mustang5L5]

180 degree tstats don't mean the car always runs at 180 degrees.


My car runs consistent 188 degrees with the 180 tstat.