Race Car Cooling Ideas......
Posted: Thu Jan 31, 2019 10:11 am
Hi All,
Having a re-think of the cooling system for one of my MGB V8 race cars.
This particular car is soon to be fitted with one of our 4.0ltr FPC engines, which produce just north of 400bhp and see constant high RPMs. The general tradition in our series is to fit an aftermarket aluminium radiator (not the cheap chinese stuff!) along with a DC electric water pump. The temps are always marginal, and realistically on a hot day, they run too hot.
From recent reading it appears that the DC water pumps are not really up to the job and flow significantly less than the stock pump, so I am toying with running the stock pump, although I suspect that cavitation may occur at high revs, and if i play with the pulley sizes then there will not be enough flow at idle. So the option on the pump front is to run the biggest 12v pump I can find, like the Stewart Components inline pump (55gpm) or to run the standard pump slower, with an electric booster pump for idle.
I also think I can get another 2" of length on the radiator, which due to the restricted width of the body of the car is a bit undersized.
I welcome everyone's thoughts and experiences on this?
Having a re-think of the cooling system for one of my MGB V8 race cars.
This particular car is soon to be fitted with one of our 4.0ltr FPC engines, which produce just north of 400bhp and see constant high RPMs. The general tradition in our series is to fit an aftermarket aluminium radiator (not the cheap chinese stuff!) along with a DC electric water pump. The temps are always marginal, and realistically on a hot day, they run too hot.
From recent reading it appears that the DC water pumps are not really up to the job and flow significantly less than the stock pump, so I am toying with running the stock pump, although I suspect that cavitation may occur at high revs, and if i play with the pulley sizes then there will not be enough flow at idle. So the option on the pump front is to run the biggest 12v pump I can find, like the Stewart Components inline pump (55gpm) or to run the standard pump slower, with an electric booster pump for idle.
I also think I can get another 2" of length on the radiator, which due to the restricted width of the body of the car is a bit undersized.
I welcome everyone's thoughts and experiences on this?