Throttle body question

[Dustin27987]

I have a couple of question. Yesturday i took the pipe leading from the intercooler to the throttle body off and the inside of both the hose and the throttle body seemed to have a lot of oil on them. I was wandering if this is normal. I wasn't sure why there would be oil in the throttle body, but i am new with the turbo buick.
The other thing that i wanted to ask is if when i begin to do some performance upgrades on my GN is putting a bigger throttle body on the car a good move or a waste?

 

[Mad_Trbo]

Sounds like the oil seals on your turbo could be leaking.

How old is the turbo?

 

[49-blues]

If you have the hose from the pass side valve cover to the turbo hooked up- most likely this is where alot of it comes from. cap the turbo port and put a breather on the valve cover. after you clean out the intercooler you should not see any oil.

 

[Ormand]

Any tiny leak in the turbo oil seal will allow oil into the air stream, and over time, it will coat the inside of the intercooler, as well as the up pipe and the throttle body. That's one good reason for doing the "spring cleaning" every year, to get the oil before it accumulates too much. The PCV system connection, from the passenger's side valve cover, will allow even more oil into the intake, even though the flow "should" be in the other direction.

 

[2QUIK6]

So what everyone is saying, just to clear it up for you. Remove the tube from the pass side vc and cap the hole on the inlet bell and put a breather in the vc (lots of vendors sell the breathers). Remove the IC and clean it out real good ( I just use gasoline to get all of the oil out) and clean the pipes.....put it all back together and after a few hundred miles, maybe even a thousand..pull the uppipe back off...if the oil has returned then your turbo seal is leaking and it will be time to replace the turbo soon or have it rebuilt.

A bigger TB is a waste unless your running deep into the 11's IMO. Jay Jackson used to do a TB mod, where he would take your stocker, open it up some and put in a new blade for about $100....not sure if he is still doing that or someone else is...if anything, do that but no reason to buy a new bigger TB if it is still driven on the street as its street manners may deteriorate.