Joined: Jul 2017
Sunday July 09, 2017 05:38
Since no one is replying, I'll give you my opinion. ......THANKS
I'm no expert but I've worked on a lot of motors all my life. I'm not exactly sure I am following all the problems in your post.
You said there are "dinged outer skirt blades" only on the exhaust side of the turbo, are they 'rubbing' because the turbo bearing is bad? That could explain your oil leak too. THE DAMAGE SEEMS TO BE RESULTING FROM A FOREIGN BODY THAT WENT THROUGH THE TURBO
But if not and some type of material went through the turbo fan, then you have a serious mechanical problem(In my opinion). I UNDERSTAND THE POTENTIAL PROBLEM, BUT LESS THAN ADEQUATE HISTORY PROVIDED, THIS MAYBE VERY OLD AND THE INCITING PROBLEM MAY HAVE BEEN FIXED 10 YEARS AGO AND NO PAID ATTENTION TO THE TURBO BLADES. FOR SURE, WHEN I GOT THE BOAT AND PUT ON IT 100 HOURS SO FAR, THE OIL WAS LEAKING FROM DAY ONE, THAT MEANS THE INJURY IS OLD. NO ENGINE NOISE, NO SHAKES, AND ONLY MINIMUM WHITE/BLUS SMOKE FOR THE FIRST 5 MIN ON WAKE UP.
Are the turbo fins only damaged on the exhaust side of the turbo? YES THEY ARE ONLY ON ONE SIDE
Anyone run the motors without air cleaners? MAYBE SOMEONE DID IN THE PAST, I DON'T KNOW
You said they tested the crankcase pressures and they were high, I wonder if they do individual cylinder compression testing or "leak down testing" on that type of motor. THEY DO COMPRESSION TEST, I NEVER HAD ONE
Try to pinpoint a problem. If the crankcase pressures are high, it most likely means your cylinder/s are not sealing and that should be fixed. IS THERE ANY FIX OTHER THAN MAJOR OVERHAUL? AND THATS WHERE MY DELIMA IS: DO YOU REALLY DO MAJOR OVERHAUL FOR SUCH MINIMUM SYMPTOMS?
Is your oil consumption within the manufactures range? YES VERY LOW OIL CONSUMPTION.
You see this could have been a problem that was fixed long time ago, because if we still have a broken valve or something worse, there should be other signs? don't you think?
Thanks for your reply.