Most competitive drag racers who rent motors are not even allowed to open the motor. The engine builder seals the motor and if seal is broken..all heck breaks loose
If your on a contract and reputable then you get to leave motor in car from race to race. If not and your renting race to race then motor most likely is pulled at end of qualifing or on Sunday if you were lucky enough to qualify.
I'm sure the competive engine builder wants to know all aspects of the pieces he is putting together for his customer. And if I were installing a cam in my car I'd definately want to know the specs.
But I understand both sides of this discussion. When money is involved things can get touchy.
Especially when its BIG money
Grump gets about $685k a year for contract customers.
Cagnazzi is being paid 1.3m by one of his customers.
Schmidt's had at least 10 people renting his motors at Indy and alot of them came back to the trailer Saturday night.
I understand this is on a bigger level but it is still the same problem. When someone is going fast or producing power they want to reap the benefits while they can before the competition catches up.
here are a few pics of motors being returned to Steve at Indy this year.