All Things Chev

[rainsey]

Hey, back on the bonnet pressure regions over the bonnet band wagon.

I got my Manometer the other day. It does gauge and differential pressure measurements. I hooked a line to the top and the bottom of the intercooler and took some measurements, interesting results.

At 80Km/h I was getting a max differential pressure across the intercooler of 0.13 " of H20 which in my mind is a pooftenth of nothing. From my understanding this almost indicates that the pressure on top of the intercooler is near the same as that underneath that thus indicates that stuff all air flow would be going through my intercooler core.

So I remove the input to the manometer from under neath the intercooler and leave it at ambient. The highest pressure I was getting at the top of the intercooler alone was 0.58 " of H20 so this effectively heaps underneath I was getting 0.45" of H20 underneath.

So from these measurements, the top of the intercooler is either a low pressure region due to where it is on the bonnet, or the inside of the engine bay is relative high pressure.

More playing to come.





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