Originally Posted by delawarebill
he did call and mentioned he put new covers on with baffles and 1 filter and 1 pcv.. said its much better but not cured..
from his statement to me this tells me alot.. some of this i didn't know... no baffles???? not good... guess i'll need to go up there and see for myself what he's doing... as far as the rings, the motor was pro built about 8 yrs ago.. he finished the car last yr so its been sitting way too long for me...
Yeah that's a long time to leave an engine sit, especially if your not in the desert southwest and the engine is sealed in that dry environment to keep sand and critters out. Metals trade electrons especially given a little moisture in the air. Some years ago (OK, really decades) the Navy did a study to find why spares pulled from storage had almost the same failure rate as equipment in use across the same time span. Most stuff being full of dissimilar metals which like to trade electrons, it was found that in storage especially where the humidity was not kept extremely low, that unused parts and equipment corroded at close to the same rate as in-service parts and equipment over the same time period. So one can take this to an engine where aluminum is in contact with cast iron and steels of various types. Toss in a little humidity and you've got corrosion taking place which changes the chemical composition of the machined surfaces leaving pits where material is eroded out and that eroded material forms grit that gets caught between moving parts sanding the interface. Next thing you know super smooth surfaces are being randomly reshaped by this process and for an engine this means oil and compression gets around the rings. Also seals harden with time, so valve stem seals no longer do the job as well as they should and crank seals become weepy especially when helped by a blow-by pressurized crankcase.
Baffles are important on the vents leading out to the atmosphere or to a PCV valve. They provide a place to slow the escaping gasses which entrain a lot of oil. Slowing the velocity gives a chance for the oil to condense and fall out while the baffles provide a place for it grab and form droplets large enough to fall back into the engine rather than be carried out with the exiting air stream.