Just got a comp turbo t67 rebuilt and when we put it back on, it's smoking from the bottom. We took it back off the manifold and tightened the bolts some more...still smoking. Is there too much oil going to the turbo? Should there be an oil restricter?

 

Is it journal bearing Im assuming? most of these turbos are made without a need for a restrictor, its the newer precisions that are becoming notorious for this issue. Specific details on the turbo would help as well

 

It's a comp turbo ct67tripple Cerramic ball bearing turbo.
The manifold is a top mount, and when they rebuilt the turbo they gave it back turned around for a bottom mount. We just loosened it up and turned it around. The guy I bought the car from said he had the turbo on his civic right before he put it on the s2. But when he had it on his civic, he said he had a restricter on it and who ever did the install on it Didnt put the restricter back on it. Does this sound right? What else might it be?

 

With a ball bearing turbo you should use a restrictor between .030" and .050". Also make sure the drain is at least a -8 and in a good spot above oil levels, preferrably in the girdle just above the pan and away from air pressure created from the crank or it wont drain properly.

 

bingo..

i was waiting to see if there was a ball bearing involved...

usually does the trick

 

Garret and all those that use a Garrett center section use a 0.035" Restrictor like this one.

http://www.atpturbo.com/mm5/merchant.mvc?S...&Category_Code=

 

"its all ball bearings these days"-----Chevy Chase in Fletch............classic movie

 

damn.. that -4 is that small? here i am with my -3 lol

 

I use a -3AN oil inlet line with a .35 restrictor, and a -10AN return line to the pan.

 

im so glad to hear its a small issue...kinda worried for a second!!
I appreciate it!