Monday, January 28, 2008

turbo calculations

Since i have so many projects all at the same time it has taken me a while to get this done.

Here are stock figures
150hp at the crank redline at 5600rpm

Here they are. This is at 10lb's of boost

PR system 1.612 (This is the number on the left side of the map)
Tout actual 199 degrees F
Denstiy ratio 1.514 (at sea level)
VFR actual 201.254cfm
MFR turbo 22.213lb
Horsepower at crank 222.13hp
MFR points plotted in lb/min These are the numbers at the bottom of the compressor chart.

5600 rpm 22.024 (redline rpm I.E. shift point)
4950 rpm 18.312 (halfway point between full coost and redline)
2300 rpm 8.3000 (expected full boost)
1500 rpm 2.8800
(halfway point between idle and full boost, estimated 5lbs of boost)

To run my injectors at this horsepower at the aproriate 85% duty cycle i need
412cc injectors.

So there you guys go plot the points and let me know if you see a mistake.

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