Oil cooler and oil pressure question?
I have been using a Hayabusa engine in a car application for some time now.
Pressure on the street is normal, about 10psi per 1,000rpm.
The engine always had low oil pressure at the track when hot. Usually as low as 35-40psi at 10,000rpm.
Many predicted that the engine would go boom but it hasn't. i have done about 10 track days, but I still fear it might happen.
Call it luck.
Now in an attempt to help raise the oil pressure I took a look at the system and guessed that the oil cooler might not be doing a good job. That could
be explaining the good pressure on the streets (lower temp) and low at the track (higher temp).
My question is, why does the oil cooler returns into the oil pan? I feel like if the oil coming out of the oil cooler was to go in the engine, that
might help oil pressure. Usually, that's how car oil cooler are designed.
But this is a bike and I don't know bike engines that well.
Maybe though, Suzuki has some kind of restrictor in the stock oil return line (that goes into the sump) to keep oil pressure up a bit. Does anyone
know about that?
Just trying to understand and keep my engine in one piece...
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