|
Yeap its a TVS900 which Cosworth decided was the best size unit for a high revving 2.0 litre engine. A big misconception with the bigger blowers can produce far more power which is untrue as they all have a 2.4 pressure ratio celing. Proof of this in the harrop dev car. Runing a pressure ratio of 2.2bar it managed 380whp on e85 which is about 320whp on normal pump gas.
Cosworth have successfully spun the tvs900 to 28k rpms which wpuld be enough airflow for well over 400hp but within spec it should be good for about 380hp on slightly lower compression.
As far as the cooling systen is concerned. If you search the forum or check the cosworth website are plently pics but it uses two large exchangers in the manifold and a pass pass radiator mounted up infront the coolant radiator.
On track I see about +15C increase in post cooler charger temps which is among the best.
Another thing to consider is the time and effort put into the development and calibration. I've mentioned cylinder balancing in the tune which makes the engine run a bit safer as it evens out all the cylinder pressures. This requires individual cyclinder pressure sensors to make it work, ideally on a test bench.
|