My mid engined build has a very low nose and to get the header tank in, there's not much height left for the radiator, which is already very small. How much can I lean it forwards without it not getting enough air?

Angle is not really the issue it is airflow. Can you angle it then just duct the air to ensure it flows through it?

Steve

No probs just make sure the air can get out.

you should be able to get loads of pics on google images of single seater side rads just rotate them through 90 degrees and its relevant to your situation

An angle of abput 20-30 degrees is said to improve cooling - that's what I did and the Polo rad keeps my V6 nice and cool

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Originally posted by RazMan
An angle of abput 20-30 degrees is said to improve cooling - that's what I did and the Polo rad keeps my V6 nice and cool

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"relative to airflow"

Absolutely but what is the airflow and where is it going? Even F1 are getting airflow wrong so to be blunt we don't stand a chance.

Best to copy summat that works ( get confirmation that it really works first). loads of info on existing stuff out there.

Long live plagiarism as the academic said!

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Originally posted by Steve Hignett
Surely that's only relative to airflow???

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I bit of searching shows the Elise to have a horizontal radiator but with a sack full of ducting. I don't need to go that far but an air catcher can only help.

Getting the air out is more important than getting it in

You can run a rad horizontal if you wish but you must duct the air through it.
Also as heat rises there is an advantage if the rad is vertical or near vertical

i have run several V mount systems in rx7s with the rad and intercooler at prety extreme anles and they work fine, as said above, just make sure the air can get out and its ducted in the way in so all air has to through the rad.

If you can have vents in the panel behind the rad (like the lotus and some TVRs it draws the air out as the car is moving.