4g63 engine problem

[microgalant]

I've a 4g64 set and tune on stock boost, but the wastegate to turbo hose broke and the car overboost badly.Getting home I saw allot of smoke commin out the breathers of the head.
When I did compresion test, 3 cylindr give me 75 and 1 -165.
Find out that it blew the cometc headgasket.
My question is puttng a new headgasket will it stops smoking out of the head?.
I've also checked, the pistons are ok, and the car doesn't smoke from the muffler.

 

[5150DSM]

Before you install a new headgasket, you need to check the head and the block deck for warpage. Lay a straight edge across the mating surface of the head and run a feeler gauge under it; standard value is 0.05mm, service limit is 0.2mm if you are 0.2mm or greater then the head needs to be resurfaced. Grinding limit is 0.2mm for both the head and block deck surfaces.

 

[allrice4g63]

sounds to me like you may have lifted your head! check ## head with a straight edge get arps and a good head gasket.

 

[microgalant]

but only blewing the gasket makes the care smoke from the head breather?

 

[Rob10_99]

Your head sounds lifted yep. The seal between the cylinder and the oil drains from the head is leaking. That would pressurize your crankcase. There's the smoke issue.

 

[BogusSVO]

is this on the new engine you just built?

 

[microgalant]

Ok,I've just bought a new headg, I've send the head to a machine shop,head is ok, put it back on, and car was running fine, but smoke was comming out the valve cover.
Well went dyno the car, still the smoke was comming out of the valvecover, but the engine was running fine.
This week, after driving for a while i saw that the engine was starting to overheat.
Went home, check all the water was in the overflow tank.
The same day I came into a great deal of a 1g head, in really good condition.
I took the head off, check for crack in the headgit was ok, i sprayed copper spray on it, bought new arp studs, put everything back on, torque it 80lbs with chromoly lube.
Went start the car, about 4 minutes running i saw the water was going again intot he overflow tank.
What do you guys think is the problem? bad radiator cap?

 

[Alex Bland]

when you got ## hood up check to see if your alt. belts still there and see if its turning. maybe waterpump? my car was overheating and i looked...no alt belt

 

[microgalant]

Alternator belt is there and waterpump is about 5 months old.
btw I've flushed the radiator also