eastcoastitalian
Contributing Member
I have a bb140 that someone set up with 1 single downdraft carb and intake.so i just got an intake with the 2 down draft carbs off an aq151 and my question is the new intake has the holes on either end for coolant to pass through, but the head on my engine has a brass plug in the furthest hole towards the front of the engine, so should i just remove this plug, or is the coolant passing through the intake not required? All the schematics i've seen show this plug used on all the 4cyls.