High oil pressure killing turbos?

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iceberg319

vvti, what?
Apr 6, 2005
328
0
0
NJ
www.cardomain.com
^^yea i understand, but i dont think the vapor causes this much oil. would running a oil restrictor hurt on a ct26? im wondering if tryin one would hurt. they are cheap anyways
 
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MKIIINA

Destroyer of Turbos
Mar 30, 2005
1,825
0
36
41
Plano, TX
thats about what mine was like when i started blowing these other turbos. im switching to a new rebuilder to see if that helps as after speaking to ITS my oil situation is well within spec for the turbo.
 
M

MKIIINA

Destroyer of Turbos
Mar 30, 2005
1,825
0
36
41
Plano, TX
just an update for this thread. it was an sp61gt turbo. mdc has looked at 2 of the turbos i sent in and oil starvation is the problem. when i looked over the feed and return line i neglected to check the oil feed fitting that goes on the block, when i pulled it off it was completely clogged. the turbo is currently out for some work and i am back on the stock ct26 for a while i consider some options.
 
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MKIIINA

Destroyer of Turbos
Mar 30, 2005
1,825
0
36
41
Plano, TX
yea jeff filled me in :( so many turbos..... wasted. but now we figured out what it is and how to fix it! :) car is up and running with the dinky ct26 but have to make some sort of braket for the dipstick as it was modified to fit the sp setup. hopefully ill have a full plan of attack with jeff by mon or tues at the latest.
 
hottscennessey

hottscennessey

DONT BE A BITCH!
Jun 3, 2005
3,137
0
36
37
Richmond, VA
YAYY JOE! At least you finally found the problem! Congrats! I on the other hand, am hopeless with my turbo destruction :(.

I think I'll give ATP's translucent drain fitting, and a new drain line a try.

home_easier.jpg

http://atpturbo.com/
 
D

dav_dman

old guy
Oct 23, 2005
107
0
0
louisville KY/so.IN metro area
Adjuster said:
Oil in your accodian intake pipe is normal. (Your valve cover vents go into the accordian pipe, and this draws off any blowby gases, and oil vapor that comes out the valve covers.)
The idea is to burn off those hydrocarbons by routing them to the intake again.

The down side is that the hydrocarbons condense on your intercooler, and you get a thin coating of oil in your intake, IC and IC pipes as a result.

The upside is that by putting a vacume source on your motor, it makes it easy for the oil to drain out of the turbo back into the oil pan where it can be used again to lubricate your motor. (After the foam goes away. The oil that drains off turbochargers being used at high boost pressures is very frothy. It's just been churned up by a shaft spinning somewhere between 70,000 and 150,000 rpm.)

This "froth" is why the larger drain is needed, and if your engine is not vented well, or builds up excessive blow by pressure in the crank case, it will cause the "froth" to build up and oil then can get around the piston ring seals, and out your exhaust...causing the smoke..

Running your motor with a good vacume on the crankcase actually adds horsepower. (Drag motors run converted pumps to create extra vacume on the crankcase, and that adds up to more power than what is needed to run the pump off a fanbelt actually.)

For our turbo motors, a good catch can between your valve covers and the intake will condense some of the oil vapor, so your drawing less oil vapor into the intake, and coating your turbo, pipes and FMIC with less oil as well, but still have the advantage of drawing off excess pressure from the crank case by simply routing it to the intake pre turbo.
Click to expand...


now that was cool. Gonna put that in my supra folder.
 
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