01ITR#700

Any info/tips would be appreciated...
My car began having some serious smoke issues with my old turbo. It was easy to tell it was burning oil and smoking ALOT, both at idle and WOT. There was a lot of oil in the charge pipes so I pulled the turbo and it was indeed blown all to hell and appeared to be the problem. I finally got the new turbo bolted on and for a few short trips around the block ZERO smoke I was SO happy. Then it started again, the same exact issues as the old turbo. So I believe it's something else, rings most likely? Would a leak down tell me what the issue is? I know it's not oil backing up into the turbo, the oil drain is wide open with no "kinks" or anything.
Thanks a lot.
Mark

Camp

First off i would do a a leak down and compression test. What size lines are you using for turbo inlet.?? usally -3 is most common with the t3/t4 hybrids. the oil return line should be a min or -8 to -10. what turbo did you just purchase and from whom.? Turbonetics has a full 1 year warranty and i think so does Precision.? hope this helps?

01ITR#700

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Camp &raquo;</TD></TR><TR><TD CLASS="quote">First off i would do a a leak down and compression test. What size lines are you using for turbo inlet.?? usally -3 is most common with the t3/t4 hybrids. the oil return line should be a min or -8 to -10. what turbo did you just purchase and from whom.? Turbonetics has a full 1 year warranty and i think so does Precision.? hope this helps? </TD></TR></TABLE>

Thanks for the info. I'm running a Garrett t3/60-1 right now. Unfortunately, I'm not 100% sure on the oil feed size, it's the smaller of the two choices most people run. I've ran the same line for a while with several different turbo's and motor configurations in this car with no such smoling issues. The Oil drain ais around 3/4" or so hose.
Thanks again for any and all info. I'll schedule a leakdown for tomorrow hopefully.
Mark

Mr. Softee

its really hard to diagnose the rings w/ the turbo on. the easiest way would to put a stock exhaust mani on and intake and see if it still smokes... leakdowns/compression tests can sometimes be misleading.

servion

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94goldjungsr &raquo;</TD></TR><TR><TD CLASS="quote">its really hard to diagnose the rings w/ the turbo on. the easiest way would to put a stock exhaust mani on and intake and see if it still smokes... leakdowns/compression tests can sometimes be misleading.</TD></TR></TABLE>

I understand how a compression test can be misleading, but how could a leakdown test be misleading?

01ITR#700

FWIW the car runs great, starts and idles fine. Boosts 16psi beautifully, and pulls extremely hard.
Thanks for any additional info. I plan on getting the leakdown done on Wednesday hopefully.
Mark

01ITR#700

ttt for more opinions...
I just spoke with Arias and they claim it's not rings most likely, and suggested pulling the turbo and manifold off and install the stock exhaust manifold and see if the smoke continues. They think it's a bad turbo(even though the turbo is brand new out of the box from Garrett) I suppose that will be my next thing to try.
Mark

servion

Let us know that the leakdown test shows... this will help out the diagnosis a lot

GraphiteAccord

lets see some pics of your oil return, and what size is your oil feed? how long did the old turbo last?

01ITR#700

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GraphiteAccord &raquo;</TD></TR><TR><TD CLASS="quote">lets see some pics of your oil return, and what size is your oil feed? how long did the old turbo last?</TD></TR></TABLE>

The oil Return is 3/4"ID I believe, and it's nice and straight, no kinks and runs almost vertical. The oil feed is -3 I believe. The old turbo only lasted about 4500 miles, only about 1000 of those miles were on the new Pistons.
Thanks.
Mark

Tinker219

I hope you arent in the same boat as me https://honda-tech.com/zerothread?id=584376
the engine has been in the car for 24 hours, i have 5 miles on it, and Ive lost 3 quarts of oil. Needless to say, the car isnt driving anymore. Good luck on your endeavors (me, ready to sob...)

01ITR#700

Hopefully this will help a little...I ran a compression test using a ghetto Checker Auto Compression tester(not sure if brand/quality matter). In my previous expeience with this exact tester I believe it reads a bit low to begin with, and for the record I'm running Arias 9 to 1 Compression pistons, stock bore.

cyc 1: 95-100
cyc 2: 85-90
cyc 3: 75-80
cyc 4: 90-95

Thanks again for any assistance.
Mark

Cramerox

Blownhatch was having some similar problems...found out he had to much oil...and not draining properly. im not sure if this is your prob but just FYI

_Endless_

is the oil only in the charge pipe? check your tail pipe as well, you may have residual oil in the pipe hence the smoke. you shouldn't experience any smoke if the new turbo doesn't have a damage seal.

Darin D.

make sure when you do a compression test to keep the throttle fully open while cranking...let it crank about 6 seconds. Those numbers are too low... how does the car idle? pull the pcv and check for excessive air pressure coming from the breather box on the back of the motor which would indicate blowby.

SlicksMH

Check the valve guide seals. John@M&H

move_right

having worked on turbo cars(volvo) for years, I can tell you there is nothing misleading about a compression test or leakdown test. I do them all the time. basically, the only thing I like a compression test for is to pinpoint which cylinder has a problem. that is if it is the case of a split head gasket or something. for ANYTHING else, especially smoking problems, I like the leakdown test. they are very definative. if your car smokes alot under hard acceleration AND at idle, but you know your turbo setup is good, I'm going to say right off the bat that you may be looking at a ring problem AND a valve stem seal problem. typically, worn rings will give you smoke under hard acceleration where as smoking at idle or "under vacuum" is caused by oil being pulled through the valve stem seals. I didn't see anything about your compression readings that I felt was a serious problem.. a little low across the board prolly depending on the engine, however, nothing is jumping out at me.

hope that helped. for further information, email me if you like.

01ITR#700

Thanks a lot for all the additional information.
The car runs and drives great, boosts hard, idles fine etc. There is oil in the charge pipes as well as the exhaust. I have ran the car with the new turbo praying that the smoke was just "left over" oil but it's been a few day now and it's still smoking.
A honda-tech is going to do another Compression test and a leakdown this weekend.
Thanks again.
Mark