[aceant]

What up Z owners/Racers? 1) My 81' Turbo piston rings were done, and the motor is rebuilt, but is blowing a bit of bluish white smoke. The car has all power, the turbo spools up fine, valve seals were replaced with the valve job, and the oil level is not over filled.
2) I had it smogged tested and it was extremely rich (almost 10 compared to .4). According to the smog tech. When I had the timing done the mechanic had it 10 degrees advanced for racing. Smog tech found the timing problem. He also stated to replace Air Flow Meter, Fuel Pressure Regulator, and the O2 Sensor. The test read the gas percentages flowing through these areas were failing.
I need some help on where to start so I could take my Z car out on the track to make some Honda owners believers. United Z Club

 

[JetBlack82]

It may just be oil in the exhaust system. It will do that especialy if you redon your pistons, change the manifold or any thing that exposes oil.. but if it's moist blue smoke you may have a bad head gasket.. Just a suggestion.. not a mechanic

 

[RetrofitZ]

Aceant,
Could bethe seals on your turbo bearing. Does it burn /smoke more under boost? Think about it, that bearing is fed oil from it's own oil line, one side of it builds boost and the other side of it is the exhaust. Just something to check.
Retro

 

[aceant]

RetrofitZ, I checked the oil today and I did not see ANY oil loss on the dip stick. Where are the oil seals on the turbo? Exterior or Interior. Some smoke comes out on excelleration. On idle it creeps out a little bit.

 

[RetrofitZ]

Aceant,
The seals are internal on the turbine axel. There is an oil line coming from the oil pressure sending switch (near the filter, R side) around the back of the valve cover and to a banjo fitting in the center of the turbo bearing. These, like any seal, can wear out (mine seam to be going!). Do a compression check to see if the problem is at the cylinder, if not, it could be your turbo. If so, I would recomend a T3/T4 upgrade as this will envolve new seals and increase your performance. Have a professional check it and install the turbine, this is not a do-it-yourselfer. This bearing and seals are why you should idle your engine for 2-5 minutes to cool this bearing down before shutting off your engine. If not, you can boil off/scorch the oil in the bearing.

 

[aceant]

Hey RetrofitZ,
You're pretty smart. I will check it out again. Hey, This one guy by the name of illushynZXT also helped me clear some things up. He said that if my car is a automatic, then to check the trani fluid, because in his case the vacuum modulator on the trani ruptured it's diaphram causing ATF to be sucked into the intake through the vacuum line... which produced bluish white smoke..

Does that make any sense?

United Z Club, L.A./L.B.

Sy

 

[schmaydee]

usually if your burning oil you'll get white smoke.....if the smoke is dark id say youre just running too rich....did you have your injectors changed too?...n/a injectors put out too much fuel for a turbo (the parts place slipped me "1" n/a in w/my turbo injectors once)......s

 

[aceant]

Schmaydee, Cool name... I thought turbo injectors would put out more fuel than N/A.....