Electric Radiator Fans
- Thread starter Oneball
- Start date
Daytona Vette
Well-known user
Twin Spal wired to a temp sender in the head - also good to have a separate switch to bring on if sender fails etc
Oneball
CCCUK Member
Thanks. Have you got a control unit that goes with the temp sender to switch it on and off?
Daytona Vette
Well-known user
No I am thinking just the twin fans, relays and the sender, mine is wired so also comes on when the AC is switched on. but thinking you will not be running AC somehow
Oneball
CCCUK Member
Cheers. Yep no AC but you might be surprised to know most modern closed race cars do run AC. They’re almost all power limited and ballasted anyway so there’s no real disadvantage. Your average historic race Corvette is probably 50 to 150 bhp (300 in some cases) up on a C7 GTE car and about 100kg lighter.
The Greenwood cars were 40mph faster down the Mulsanne straight in 1976 than the C7s were in 2019.
sublimemike
Well-known user
You probably know there are retro fit controllers that run fan(s) at variable speeds according to conditions like modern cars. Always good to fit separate toggle switch inside if you think your temp guage is showing too warm
Oneball
CCCUK Member
Didn’t know. Thanks. Will look at those.
Roscobbc
Moderator
Some of the 'privateers' were timed at 200 mph+ on the Mulsanne straight during the early 70's
sublimemike
Well-known user
I'm sure I saw them in Summit...not cheap. I had issues keeping my 440 built mopar cool. Looked at everything timing, fan shroud , water pump flow, fan spacers , ally rads etc etc. In the end I got a Champion 3 or 4 core and a used merc fan and shroud from a scrappers. The fan draws 50amp max on start up so needed a big alternator as well. The controller you program up yourself and has 3 lights to show the speed its running. Does the job. Let me know if you need me to dig out a link though its kinda made for Mopars with 26 inch rads
Oneball
CCCUK Member
Just going to run a single electric fan, the only reason to not run the standard is that’s it’s not needed almost all the time on a race car as airflow is sufficient without a fan.
Daytona Vette
Well-known user
Doesn't an engine driven fan sap power?
Oneball
CCCUK Member
Yes to some extent but you have got a clutch on a C3 so it only uses it when necessary, electrical power has to come from the engine too but because electric fans turn off completely they’re more efficient.
Daytona Vette
Well-known user
Thank you
Daytona Vette
Well-known user
Tim have you decided on brakes and wheels?
Oneball
CCCUK Member
Brakes will be the standard items. It had recon callipers all round when I bought it.
Wheels I’m thinking of Torq Thrusts.
sublimemike
Well-known user
One thing I'm not happy about on C3's ... brakes or maybe lack of them... maybe its just me..
Roscobbc
Moderator
Not just you Mike - me too - brakes earn the description 'brakes' (like they kinda slow the car down.......kinda) its just that they don't really make the grade compared with most current vehicles......