Quote Originally Posted by Jason F View Post
Barrel cooler looks expensive and you have to cart lots of water around.

Back in the seventies, we had water injection into the carbi. It converted the water to steam and gave lots of ommmph.
The down side was that water eventually got past the pistons in to the engine oil and stuffed everything, as I recall.
This was because people got greedy and poured vast quantities down the carbi using their windscreen wiper pump.

However we know that on wet humid days we tend to get more oommmph. I assume this is because the air is cooler, therefore more oxygen and some water vapour is converted to steam?

I wonder if anyone has tried a high pressure pump and a fine atomiser nozzel and simply added moisture to the air as it enters the inlet manifold on a hot day or hill climb etc.

Whether it can cool the air to any noticable amount, I don't know.
It cannot do any harm as its the same as natural moisture in the air.
The air to water above is a closed system so will only require a litre or 2 .