so apparently i have blow-by???

[jewbaca]

i just recently finished up my swap on my car and apparently my BOV is spitting out oil.... so my friend says its blow by which equal either a blown turbo which i could replace pretty easily or blown piston rings =/ any ideas or opinions?

[ericcastro]

most likely a blow turbo issue.
Was the engine not running before??
Is it pouring smoke out the exhaust?

[ik0n]

Could be blown turbo seals.

[jskateborders]

Its blown turbo... No possible way It could be blown rings... that would be blow by from the breather.

[cotbu]

Its blown turbo... No possible way It could be blown rings... that would be blow by from the breather.

Unless you know his setup that's BS... I just cleaned somebody pipes because they didn't install the little brass restictor, brush thingy when replacing the hose on the valve cover (right side). Anyway there was oil in the intake pipe, intercooler piping, intercooler, on the hood and leaking oil from BOV by the throttle body. I traced it, back from the intake to the T, but it was just a guess... My test drive, and 2weeks later, no oil residue anywhere.
There was blow by, but ive seen worse, It just doesn't mean the turbo is shot, because theres oil! Plus there was no smoke.

[jewbaca]

well the turbo came off my old sr20 longblock which was blown.... and it came with an aftermarket hks actuator so i'm thinking its the turbo.... i dont think its poring oil out the exhaust... i really hope its the turbo cuz replacing that is basically plug and play but replacing rings... oh how annoying that will be and buying all those gaskets oh my anyways, car runs good and strong, how much to rebuild a turbo btw? and if my rings were blown woudn't it be driving like crap? also this is a fresh swap and the sr was automatic before.....

[ericcastro]

i would think that if its the rings, it would be burning oil, so you would see it out the exhaust.
like stated above.
So its probably some sort of turbo issue.

rebuild?? that depends where you go :)

[moses]

when i blew my turbo, that meant it was time for an upgrade.:naughty:

[jewbaca]

would it be smoking as it stood still? in that case it sure does not, and i dont think it does when moving i'll have to check... anways does anyone have a cheap t25 they want to sell? t28's are cool too....

[Mister.E]

first off, does it only do this under high RPM situations?

how do you have the hoses setup running from the valve cover? i was having this same problem for a long time and i finally figured out what it was. are you running the front hose off of the T straight to the intake? also, do you have just a straight hose running from the back of the T to the crank case?

that is how i had my hoses running and i was getting a shitload of oil spraying from my BOV. in an attempt to combat this problem i installed an oil catch can. now instead of getting oil in the intake it was collecting in the catch can. during track days i would lose about a quart per day. needless to say this was pissing me off pretty bad, so i did some research. one guy on here recommended that i reinstall the oil separation tank (the metal black box) that goes between the back of the T fitting and the crank case. after having put that tank back in i have gone to several track days and have had a loss of absolutely no oil. i dont know how that tank functions but it seems to work really well. if you dont have that installed try to put it back in and see what happens. after you install it i highly recommend cleaning out your intercooler, piping, intake, and BOV before you run it hard.

[slider2828]

Simple do a freaking compression test....

If it ain't that, then its your turbo...

Simple why is there all this useless speculation. Yes a blown oil seal will cause pressure into the crank case which causes excessive amounts of oil blowing through your hot pipe hence oil in the BOV....

Man you guys.... Tell him how to solve it not give him a bs run around...

[Mister.E]

dont get your fucking panties in a bunch because it may not be his turbo. in the situation i described my turbo was acting perfectly fine and it still is. so dont act like we are giving him a goddamn run around when we are really trying to help. and as far as your compression test idea goes, that may not be the problem either. my compression checked out perfectly fine when i was having this problem. im not saying that checking the compression is a bad idea but that may not solve his problem either.

out of everyone else in this thread you probably provided the least amount of useful information, so...uhhh...thanks :goyou:

[slider2828]

Yah but it starts him on the path to figure out...

I know exactly the problem you have described as I have the same problem as I eliminated the black oil/air separator and get a lot of blowby into my oil catch in front of the T, but usually that happens on more upgraded turbo's and probably not near stock setup. Wellz, i guess we can just wait to see what his setup and stuff...

I assume he didn't remove that black oil catch because most people don't... but we'll see what he says

[Mister.E]

mine was doing it on a stock T25 when i removed the oil separation tank. when i upgraded to the T28 BB it only got worse. i find it hard to believe that "most people" dont remove that oil separator because everyone i know with an SR has removed theirs.

if he can provide us with some more info it would be a lot easier to diagnose his problem.

[jewbaca]

my setup is as "E Double" says... so thats my problem guys i dont have an oil/air separation tank between the back of the t fitting and the crank case... so its neither blow-by nor my turbo? that would be sweet... so now what should i do, pick up an oil/air separation tank and install it between the back of the t fitting and the crank case or go ahead and just get an oil catch can and install it in the front of the t fitting? or both?

[cotbu]

you need the little fitting that sits in the hose, on the separator side!

[jewbaca]

i dont understand lol im new to sr20's.... could you elaborate a little "cotbu"?

[cotbu]

The stock setup with oil air separator(catch can), has a brass fitting in that line (o). The line with the stock catch can. When people swap manifold and delete the stock catch can, they tend to forget the fitting (o) that's in that hose, because they replace it with a new hose.

If, you push out that fitting and place it in the new line, before the Tee you. It should solve your problem. If you still get oil in your intake get a catch can or find the real problem.

[Mister.E]

dunno what fitting you are talking about but i have an aftermarket manifold and just mounted some brackets so i could put the separation tank back on. after i put the tank back on i added some new hoses (obviously aftermarket, so they dont have the fitting he is talking about) and i havent had any oil problems since. if you are going to do one or the other i would highly recommend doing the oil separation tank first cuz it may fix your problem, all the catch can is gonna do is collect the oil.

[cotbu]

So, I guess we know a few things... Oil in the intake doesn't mean a blown turbo! And there are at least two options that may solve your problem. I agree with E Double, locating a separator will be easier, than trying to find that fitting. If, you don't already have it.

I am CotBU, and a approve this message.
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