Hi everyone, I hope someone can help!! I just installed a BBC Mark 4 built 588 motor in my boat, first three times out no issues fourth time about 10-15 minutes of use white smoke started pouring from the valve cover breathers- more on the right than the left. Did a compression check and everything it dead on, changed the oil- no water in oil, checked carb power valves not blown. Motor runs and sounds perfect doesn’t skip a beat. I don’t think it’s water reversion because I don’t have a big cam.....what the heck am I missing??
Thank you.

Plugs are perfect. I have EMI Thunder dry exhaust. Temp is normal

Sorry to do this guys but I have to have 10 posts to
show a picture/ video so I am going to do nonsense posts

I want to run it this weekend for the last fun run i
bummed

Really had enough with this boat- bought it had to put a new transom, transom assembly, motor, drive, exhaust

Almost to 10 posts I am very sorry

My wife hates me because of this boat

Ok last nonsense post thanks for bearing with me