Turbo leaking?

[heavymetal101]

Is it possible for your turbo to mix antifreeze in to your oil when its cooling? I ask because my engine started to knock, so i drained the oil and it was like a river coming out. So i checked the radiator overflow and its fine, and took off the thermo cap, and the antifreeze is green, no brown in it. So is it possible for the turbo to go bad and start mixing the two? its the only thing i can think of.

 

[phunny]

Headgasket :/

 

[heavymetal101]

i just replaced the head gasket with a new metal one. It cant be the head already. My antifreeze is still full, and still green there is no discolor when i drained the antifreeze.

 

[RadDsm]

Are you sure the oil was mixing with coolant and not fuel?

If you are mixing oil and coolant, it's the HG 99.9% of the time. Were the head and block decked for the metal HG?

 

[phunny]

Are you sure the oil was mixing with coolant and not fuel?

If you are mixing oil and coolant, it's the HG 99.9% of the time. Were the head and block decked for the metal HG?

Exactly. If you didn't have the head machined it's your headgasket.

 

[teenvette77]

The coolant chamber in a CHRA is completely separated from the bearings by the casting itself. Unless theres a crack in the cast iron the two cant mix. My moneys on HG as well

 

[heavymetal101]

guys, the head was brand new. My turbo has been leaking oil everywhere, buring on my exhaust, so i tightened the drain up, and its still leaking for the bolts around the turbine, it has to be this turbo.

 

[heavymetal101]

i will take the head off again and replace the HG once again, and have the new head machined again. and when i say new head i mean Autozone head new.

 

[heavymetal101]

Checked the turbo, its filled with cracks, and the shaft turns but its no free spinning

 

[RadDsm]

I'd like to see the cracks on the CHRA. I've never seen coolant and oil mix in a turbo.

 

[teenvette77]

yes, post a pic of the cracks. i have never seen it either. just threw out a catastrophic possibility for any possible way a turbo could mix oil and coolant.

 

[Bud92gsx]

Like stated before if your going to run the metal HG the head has to be decked..Otherwise which I learned in school and Don't know if this is actually true or not..But if its not decked and you have a large HG your actually loosing compression..

 

[heavymetal101]

Today after work i am going to check the head bolts. I was talking to a friend yesterday and he asked me if i had retourqed my head bolts since installing the new head. Of course i said no. So he is telling me that is my problem. I need to retourqe them and it should stop.

He saw the cracks in the turbo, they are in the wastegate area. I'm trying to get a good angle to show you guys

 

[teenvette77]

Today after work i am going to check the head bolts. I was talking to a friend yesterday and he asked me if i had retourqed my head bolts since installing the new head. Of course i said no. So he is telling me that is my problem. I need to retourqe them and it should stop.

He saw the cracks in the turbo, they are in the wastegate area. I'm trying to get a good angle to show you guys

If theyre in the wg area they are not in the CHRA. The only thing those will lead to, if they get big enough, is boost creep like issues. I had the same cracks.