Ok so its a 97 prelude sh stock internals t3/to4e 10-psi, been like this for 2 years.
Just in the past week the car has been putting out masive amounts of blue smoke (oil).
I have no oil restrictor on this turbo, so its either the turbo or could be my rings.
The car only pushes smoke out of the exhaust after I boost and let off, and only under partial throttle, so what do you guys think?

 

As a rule of thumb...

If it burns oil while accelerating, its more likely to be the piston rings.

If it burns oil while decelerating in gear or immediately after doing so, its your valve seals.

If you start the car while cold and it begins to smoke after 5 or so minutes, then it could be the seals in your turbo.

-Kris

 

Cool thanks man, do you think its too late to use a ristrictor? I need to daily drive this car for a few months untill the built motor and new turbo go in, but the way its smoking it will get taken off the road in no time.

 

From what I understand, the seals in a turbo do not blow. With excess oil flow, the oil is able to push itself past the seals.

I ran an oil line line which was a bit on the larger side on my current turbo. After it started smoking I installed a restrictor and the smoking stopped almost entirely.

Kris

 

fwi, a turbo going bad can cause smoke on decel.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dturbocivic &raquo;</TD></TR><TR><TD CLASS="quote">fwi, a turbo going bad can cause smoke on decel.</TD></TR></TABLE>

Hmm, I never knew that. How's that work?

 

dunno, but i had that problem and never thought it was the turbo... replaced the turbo and the problem stopped..

it was not a heavy smoke... it was faint smoke....

 

remove your down pipe and look for oil or your charge pipe and look for oil. do a compression test, look at your spark plugs.

 

I will, thanks. I noticed that the car smokes the worse when im on the highway, if I give the car any throttle after letting off it will poor white and blue smoke out the exhaust for a good 10 seconds.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by khmboostedeh2 &raquo;</TD></TR><TR><TD CLASS="quote">From what I understand, the seals in a turbo do not blow. With excess oil flow, the oil is able to push itself past the seals.

I ran an oil line line which was a bit on the larger side on my current turbo. After it started smoking I installed a restrictor and the smoking stopped almost entirely.

Kris</TD></TR></TABLE>

Turbo seals will blow and then the turbo needs new seals and a simples restrictor isn't going to save it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nonvtecD &raquo;</TD></TR><TR><TD CLASS="quote">Turbo seals will blow and then the turbo needs new seals and a simples restrictor isn't going to save it.</TD></TR></TABLE>

From what I have learned, the whole idea of turbo seals blowing is a myth. They do not blow, oil merely makes it way around them. According to volvoclub.org.uk , the seal on the exhaust side is usually a simple piston ring with a small ring gap. The seal on the compressor side is either the same style or a more positive carbon seal similar to an air conditioner compressor seal, or even a water pump seal.

With that said, I think its just commonly mistaken that when people write "blow out the seals" they mean oil is "blowing past the seals." (As opposed to breaking or physically changing the seal's original shape,state.)

Kris



Modified by khmboostedeh2 at 7:50 PM 3/19/2007

 

I had a restrictor on an old turbo and it smoked and smoked. I replaced the turbo seals but did nothing else with the oil flow and never had the problem again. This would agree with the fact that seals need to be replaced.