Show whole topic May 28, 2018 9:12 am
Colin M34 Offline
Member
Registered since: Dec 01, 2007
Location: Suffolk, UK


Subject: Re: Advice needed
HI Hugo,

Just to explain thermostats a little more. The 2 Litre radiator consists of two parts. The centre core does the cooling and the sides work as a by-pass. So the thermostat is a change-over valve. When cold the water runs down the sides and when hot, down the core - or rather that's the idea. As Dick says, many cars work without a thermostat because the coolant quite happily goes down both.

However if the core is blocked - perhaps with limescale - the radiator gets hot but the core is not doing much cooling, in which case the car will run warm. Perhaps that is why someone fitted an electric fan, which is not really needed.

The 2 Litre radiator generally works so well that I also blank off my lower half. I have a heater and the women folk like warm legs when I run with the top down.

Cheers M34