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Rev2 9K 06-05-2003 01:05 AM

crankcase pressure
 
I have my turbo on for a week now. I have noticed smoke coming from my breather filter on the valve cover. Tonight I noticed I have been blowing out my dipstick out of the tube. What could be causing this? Is it bad for the motor? It never did this without the tuurbo.
I have replaced the PCV valve also.

WhiteTeg24 06-05-2003 08:39 AM

Re:crankcase pressure
 
Do a compression test. My bet is broken ring landings. It will always smoke out of the breather with broken ring lands because the boost is blowing by the pistons into the crankcase which is why you are blowing out your dipstick also. Sorry. :'(

Rev2 9K 06-05-2003 08:50 AM

Re:crankcase pressure
 
Wht do you mean by ring landings, and is this going to be a expensive fix?

WhiteTeg24 06-05-2003 10:05 AM

Re:crankcase pressure
 
The ring landings are the material between each piston ring. On stock pistons they are very weak and any little bit of detonation will usually break them. As far as expense, pistons usually go anywhere from $350 to about $500. You can get good deals if you look around real good. You can build the motor in the car. Just pull the head and drop the oil pan. Depending on mileage of your car you will probably have to hone the cylinders at least.

shortyz 06-05-2003 11:25 AM

Re:crankcase pressure
 
High crankcase pressures are normal for any boosted car running high RPM's, that is why it is essential to have the necessary evacuation system, with either a beefed up PCV system, or a seperate catch can setup. (Or both)

u dont need new pistons. just replace the rings and hone the cylinders. hehe fun fun

rudebwoy 06-05-2003 12:39 PM

Re:crankcase pressure
 
same problem I've been bugging on in the hybrid post, the only difference is I'm not boosted yet, beefed up pcv system, how?

shortyz 06-05-2003 12:54 PM

Re:crankcase pressure
 
catch can hooked up properly and a breather filter on your valve cover. and a new pcv valve.

projekteg 06-05-2003 01:37 PM

Re:crankcase pressure
 
how would you hook up a catch can? i had one on my old b18a, but there isn't one on my b18b. it looked like it had a hose directly under the pcv valve (on the intake runner) and then it had another hose going back into the block???? do you have to tap into your block?? and now my pcv valve is on the valve cover

Rev2 9K 06-06-2003 06:19 PM

Re:crankcase pressure
 
The # 1 and 3 cylinders are at 90, and the 2 and 4 cylinder are at 160. Yeh, it is screwed up, now the motor will be pulled tomorrow. Can te stock rods hold up to about 12psi?

MR_DR_PEP 06-06-2003 10:30 PM

Re:crankcase pressure
 
the answer to your question depends on what you're using for fuel management and how well it's tuned. Most of us on here know that the stock D rods can hold 15 psi if tuned properly, but I'm keeping mine below 8 just for the sake of my 183k mile a6 motor.


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