supraman508;1714490 said:
I was reading up I'm the waste gate valve and it states " If turbocharged air pressure became too high.knocking occurs.Outcome reduction of engine output is caused".Next before asking any other questions I will read up some more.I'm thinking maybe bad wastegate.
Don't confuse spark knock (detonation) with rod knock (worn out bearings) - they are
not the same thing. The knock that is referring to is detonation. You can read about that
here. Detonation on a turbo car is catastrophic and easily results in broken pistons, ringlands, rings, blown headgaskets, cracked heads, broken spark plugs and broken valves. It is caused by running too lean (not enough fuel) for the boost level, too hot of an intake charge, having overly advanced ignition timing, too low of an octane of fuel or hot spots in the combustion chamber. While it's possible that is what caused your blown head gasket, you've got much bigger problems at this point.
hvyman;1714491 said:
Money is on bearings since you changed them the hill billy way and not properly.
I'd agree. The Toyota M-Series engines have high volume, low pressure oiling systems and very tight tolerances.
hvyman;1714491 said:
Stock oem bearings are select fit and have about 7 different sizes. So if you put standard and it need to be oversized then you will still get knocking. Also if the crank was damaged from knocking then new bearings will not help.
From what he's described I suspect he's got acid etched bearings, rods and crank. There is likely other damage as well (scored cams, etc..), not to mention the entire oiling system is likely contaminated by both coolant and bits of metal from everything that was ground up inside of it. The motor is going to need a lot of work.
hvyman;1714491 said:
IF your headgasket is blown. Replacing just the bearing isnt going to help either as if there is coolant in the oil you just ruined and wasted your time and money as water/coolant eats bearings.
Correct, that's why I referred him to that link earlier, it explains that as well.
Simply put, at this point that engine needs to be pulled, torn down, inspected, machined (if the damage is repairable), hot tanked and rebuilt. Or a used/new engine needs to be installed. Put a fork in this one, it's done.