Technical Tips > Radiators - Cooling
thermo fans
demonx:
I've been thinking about upgrading the original fan set up to a twin thermo fan setup.
Anyone have any input or comments/opinions?
Has anyone else here done anything similar?
77CVT:
ICE fans flow as well as Davies Craig and drag a LOT less amps. For a C3 I still think you will need a shroud unless you have a big alum radiator.
2 x 10in will fit (just). You may get away with a 10in primary and a larger secondary.
It wouldn't be hard to make one if you are handy with fibreglass. Just make a template of the rad from 3mm mdf and build the rest from there. A '75 rad is a different shape to a '77 FYI.
MADLT1:
i have the standard fan on mine ,but i allso have twin thermos at front of radiator,they come on at about 160 and work fine,in summer i will run at 180 on a long drive,it ran better befor with a 7 blade at the front of engine.
Chromie:
Hi demonx;42
I do not recommend thermo fans at all on C3's or earlier.;38
Use a 160 degree F thermostat with factory fan blade and fan clutch with factory fan shroud.;27
While thermofans may keep your engine under the boiling point. They will not keep it as cool as the factory design.;50
To put it simply it will feel like you are driving your Corvette with the heater on all the time.
;37;37
Hope this helps:25
MADLT1:
i disagree,i dont think the factory desighn works for the australian climate,there are more c3s out there bioling there heads off with factory setup then there is cool ones with factory setup,just my experience with them.;40
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