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Another update: We found a cheaper possibility to check if the efforts are worthy. Instead of driving on a track we just put the car on a dyno with only a weak airfan from the front and then do some full load tests. Result: 1st try had to be abandoned after about 4 times of accelerating - engine did get hot although we mounted another radiator and an additional oil cooler. Try was stopped before the water and oil temp gauges went into the red zone. So no power data at this time.Inspection showed that the oil cooler thermostate opened too late (at about 96 C). Thermostate for the water flow is removed so we have a constant flow and that should not lead to a problem. Everything else seemed to be fine - water flow from pump, ignition timing, gaskets. Next dyno try will be on tuesday with a different oil cooler thermostate and a stronger fan behind the radiator.OTOH I'm still not convinced that a stock engine should get too hot so quickly even under this conditions - but I don't know where to search further. Any thoughts besides these already mentioned here?
Another update: We found a cheaper possibility to check if the efforts are worthy. Instead of driving on a track we just put the car on a dyno with only a weak airfan from the front and then do some full load tests. Result: 1st try had to be abandoned after about 4 times of accelerating - engine did get hot although we mounted another radiator and an additional oil cooler. Try was stopped before the water and oil temp gauges went into the red zone. So no power data at this time.
Inspection showed that the oil cooler thermostate opened too late (at about 96 C). Thermostate for the water flow is removed so we have a constant flow and that should not lead to a problem. Everything else seemed to be fine - water flow from pump, ignition timing, gaskets. Next dyno try will be on tuesday with a different oil cooler thermostate and a stronger fan behind the radiator.
OTOH I'm still not convinced that a stock engine should get too hot so quickly even under this conditions - but I don't know where to search further. Any thoughts besides these already mentioned here?
