Oil in PCV Catch Can Question
#1
Oil in PCV Catch Can Question
Hey guys, I have a road race car using an LS1, MS4 cam, cheap ported heads, naturally aspirated. I have a catch can in my PCV lines and I checked it for the first time and it had about 1/8 to 1/4 a quart of oil in it. I have done several track days, auto crosses, and drag strip test runs and driven a few hundred miles on the street. It wasn't a crazy amount of oil but it did pour out of the can. The motor runs very well as it is a fresh build, compression checked out great, etc. I just wanted to know if this amount of oil in the catch can shoudl be expected. If not what would you suspect the problem to be. Thanks.
#2
That's not bad....the higher you rev the more oil you can usually expect. One of my friends that drag races his can get a pint or more in his catch can in one day of racing....that's what the can is there for....that way your not sucking all the oil back in and burning it
#3
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It's normal, especially during high rpm decellerations to puke a good amount of oil into the can. It just means the can is doing it's job. All of that would have been in your intake. Cool.
#4
Cool, I kind of figured but I just wasn't sure of the amount. Good thing we use catch cans as that would suck to have all that oil going through the motor combustion process. Thanks.