I just bought a new flame trap assembly from IPD. It is the first one I've seen with a removable flame suppresser. When I looked down into the molded casing, I was supprised to see that the diameter of the outflow tube after the supresser is reduced considerably by an intentional restriction.

Given that my brick has well over 200K on it and blowby is a natural consequence of wear, would it make sense to ream out the restriction in order to increase the crankcase ventilation flow rate?

Is this restriction designed to provide some sort of venturi effect?

I recently blew a crank seal during a 500 mi trip that saw some milage whiz by at 90+. (cafine induced throttle management...she hummed like a sewing machine). I'd like to avoid that job again although I'm getting good at it.

Thanks guys