oil in plumbing (Turbo) - Toyota Nation Forum : Toyota Car and Truck Forums

numbone · 09-19-2005, 08:06 PM

i dissassembled my intercooler pipes and intake pipes to check my turbo for play and remove intercooler bracket. while doing so i notice fresh oil settled in a rubber coupling that connects my throttle body to the intercooler. and mild oil streaks throughout the other parts of the intercooler pipe (pipe from intercooler to turbo. there was mild soot by the compressor side inlet aswell. the turbo has no play whatsover \. what is the problem? anyone know

ST185 · 09-19-2005, 08:14 PM

It could come from crankcase ventilation.
Check if you can see oil in that hose.
Otherwise, your turbo seal might be bad.

93MR2Turbo · 09-20-2005, 12:00 AM

I have the same problem with mine 93 turbo too

Bills94sw20 · 09-20-2005, 12:54 PM

PCV is correct (probably, unless you have other unknown issues with the turbo, etc.). You can eliminate this problem, but all the alternatives are "off road use only" since they vent oily vapor to the air. However, if you used one of these methods you should reclaim some horsepower, as you are eliminating a heat source to your intake. It would "probably" also improve detonation efficiency. But the strength of my arguments (horsepower and improve detonation) vary from car to car and are nearly impossible to measure prior to the modification. I have a link to a very sweet method (i.e. a can reclaim with a vent) but I'll have to dig it up.

JekylandHyde · 09-20-2005, 01:01 PM

Some amount of oil in your intact tract is 100% normal ... as has been pointed out, the PCV empties right before the turbo and the turbo blows it through the system.

numbone · 09-20-2005, 08:18 PM

any links for the PCV mod. i have a miniature vent filter sitting here right now.

JekylandHyde · 09-20-2005, 08:44 PM

The simplest thing to do for t he PCV is:

1. Cork the hole in the intake tract.
2. There is a metal tube that sticks into the intake tract. This is on the end of the rubber hose coming from the PCV. Turn the rubber hose so that the right-angle at the end of it is pointing upward. Take the metal tube out and flip it around in the rubber hose so that it is pointing even more upward.
3. Stick a filter on the end of the metal tube.
4. Look at photos of my engine bay to see what I am talking about.

The point of doing all of this "upward" stuff is so that it is harder for oil to travel to get out of the filter. When you are cornering hard or if pressure builds up in the system, you will have oil run out of the PCV sp keeping everything upward encourages it to stay in the system.

The best option is to buy and use a catch can.

numbone · 09-20-2005, 08:55 PM

thanks jeff i'll have a go at it tonight.

93MR2Turbo · 09-21-2005, 03:10 AM

Quote:

Originally Posted by JekylandHyde

The simplest thing to do for t he PCV is:

The best option is to buy and use a catch can.

how to install a catch can for mr2 turbo? pic will be helpful...thanks

JekylandHyde · 09-21-2005, 10:42 AM

A catch can just has one hose from the PCV into it and then it has another hose that leads back into the intake. The oily residues just build up inside the can. You have to empty it out every now and then.

numbone · 09-29-2005, 07:49 PM

put the PCV filter on pretty quick install. havent noticed any differencr in perfornace but ts good to know i have no recurculated burnt stuff in the intake.

terrastrife · 09-30-2005, 10:12 AM

youre still best of with a sealed catch can, as the intake vacuum (or what little of it) will help suck valve cover pressure out of the top of the engine. 3sgte's are known for some serious pressure build up.