HI everybody. I am a new member and have just bought an 2000cc pinto S7 with my son and we are having some shakedown issuesadd with overheating. The previous owner was a builder of BRM racecars and seems to have done a great job with the exception of cooling issue. Basically we heat up to 90norm in minutes and starts to overheat after more than a few mins in traffic. Even when running at 50mph on a cool day (14c ambient) - it never really shed the head and sits between 100-110c
Shortly before selling, previous owner fitted a new twin core aluminium radiator, and a small electric fan on an isolated switch, which we always leave turned on.
Hypothesis is as follows:
- Looks like the electric fan (see photos ) is far too small. It's only 6" diameter can't be much use. How big should this be?
- What happens if polarity is reversed and the fan isn't pulling air through (haven't checked this yet)
- There is no expansion tank that I can find. This surely must limit the thermal capacity of the coolant
Installing a larger fan seems problematic as there is 1.25" clearance to the front of the crank pulley. Any advice on fault-finding on a workable solution would be very much appreciated