Inner Wing Air Deflectors

[haasad]

As a component of my cooling system improvements I have made and fitted a pair of deflectors to minimise air loss through the front wheel arches.
I already replaced the horizontal divider and the vertical section behind the grill and fitted inlet ducts for the cold air box and fresh air.
Next up is a proper motor side fan shround.

 

[WHT]

Hi Haasad,

Its always interesting to see how people address engine cooling.

If you don't mind, what is your strategy for removing hot air from the engine compartment? I looked at your earlier posts and didn't see any other cooling information.

Looking at engine compartment ventilation forums, for example boats and ships, the first priority is always to improve the engine compartment's ability to exhaust hot air efficiently. And then, start increasing airflow into and through the engine compartment to the point you begin to increase engine compartment pressure (the limit of your ability to remove hot air efficiently).

Most of us don't have wind tunnels, but there are several videos on YouTube showing the passenger in a moving car measuring air leaving the engine compartment as they drive the car (essentially using a pressure/flow meter on the end of a stick).

Regards, Bill.

 

[haasad]

Hi, the defectors are intended to reduce lost air into the arches. Regarding allowing the air to escape from the engine space I have a louvered bonnet (hood) and tend to pop the bonnet (hood) when things get too much.
At present I’m working on a 4 piece fan shroud since I have no overheat issues when the car is moving at normal pace it’s all to do with cooling it in very slow traffic and when stationary.
My tuned motor makes more heat than a stock one I suspect as the cooling system itself is in A1 condition.
You may have seen pictures on the AH FB page but I closed my account there recently in favour of more focussed forums.

 

[WHT]

Sounds like you have a good plan.

I would think a well tuned radiator shroud would really help in slow traffic (tuned for fan-radiator spacing, fan diameter and correct air spill).

I was advised not to completely seal off the front of the car with air baffles/plates intended to close off all but the radiator because the engine needs cooler air flow around it to lower temperatures. Heated radiator air alone is not sufficient. They build Austin-Healeys for wealthy customers living in hot climates.

A number of high-end car manufacturers equip their engine compartments with temperature controlled exhaust fans to also pull cooler air downward around the engine when stopped. I'm considering installing a toggle operated automotive exhaust fan on the driver's side of the engine if possible (headers).

Regards, Bill

 

[haasad]

Good to think there may be options beyond my current plan. Temps in the UK are now typically falling so I have time to implement the approach I’ve adopted. Let’s see how it goes