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I had a ATI supercharger installed in my 2001 C-5. The other day I was driving and really mashed the accelerator and noticed that there was smoke comming out of the hood and it smelled like oil so I pulled over and the dip stick poped out and there was oil all over the engine. I changed the dip stick thinking it was the O-Ring. I tried it one more time and it did it agian. Is this normal and what can I do? Thanx for any imput
It sounds like to me you are pressurizing your crankcase. Have you checked your pcv valve? It might be bad. If thats not it you could do a leak down test to see how good your rings are. How many miles do you have on the Vette? TTT for you.
You are going to need to install a one way check valve inline with your PCV valve. If you keep this up you will end up blowing up the engine from boosting the crank case.. :cry
You are going to need to install a one way check valve inline with your PCV valve. If you keep this up you will end up blowing up the engine from boosting the crank case.. :cry
vetterdstr :cheers:
Ding Ding Ding! This is exactly the problem. Since your manifold is now under pressure, not vacuum, the PCV valve is flowing backwards when under high boost pressures. A check valve should fix it.
By the way, when he says "blow the engine" he means explode--this can literally cause an explosion in the crankcase. It's fairly rare, but can happen. Way back in the old days, before PCV valves, it would occasionally happen on normally aspirated motors.
I guess everybody has forgotten my post that was almost identical to this last November. Do a compression check....you will find you have busted pistons. If I am wrong and doubt that I am..its your lucky day. But I have seen it all when it comes to this. There is only one thing that can make your dipstick pop up an inch and spray oil like a sprinkler head..and it is not your PCV at all! :nonod:
I was running 10lbs of boost when this happened and it never happened before the pistons broke..so if the PCV was the problem it would have happened then. Since my motor replacement I have been running 12-14lbs of boost with no modified PCV (until recently for experimentation) and the dipstick never has popped...same old dipstick as before..the crankase is being pressurized because your ringlans are busted and huge amounts of blow by are pressurizing your crankcase and blowing out your dipstick..if you have a vent line from the valve cover to the inlet to the blower..check it for oil too. Like I said I really hope I am wrong..but I forsee forged pistons going in your car soon.
I guess everybody has forgotten my post that was almost identical to this last November. Do a compression check....you will find you have busted pistons. If I am wrong and doubt that I am..its your lucky day. But I have seen it all when it comes to this. There is only one thing that can make your dipstick pop up an inch and spray oil like a sprinkler head..and it is not your PCV at all! :nonod:
I was running 10lbs of boost when this happened and it never happened before the pistons broke..so if the PCV was the problem it would have happened then. Since my motor replacement I have been running 12-14lbs of boost with no modified PCV (until recently for experimentation) and the dipstick never has popped...same old dipstick as before..the crankase is being pressurized because your ringlans are busted and huge amounts of blow by are pressurizing your crankcase and blowing out your dipstick..if you have a vent line from the valve cover to the inlet to the blower..check it for oil too. Like I said I really hope I am wrong..but I forsee forged pistons going in your car soon.
[Modified by Shinobi'sZ, 8:35 AM 3/19/2003]
[Modified by Shinobi'sZ, 8:39 AM 3/19/2003]
Yep, I remember predicting that unfortunately... :nonod:
I can see how the pcv minus a check valve would cause the dipstick to pop out but you cannot convince me that the pcv system would generate enough pressure to blow oil out all over the engine. I have had this whole dipstick blowout problem before which is how I predicted Shinobi's problem. Like I said with him, I hope you prove me wrong, but be prepared for the worst...
To boost your crank case and break your pistons, all you have to do is step on the gas for an extended time period. You dont have to race the car to do it. When you install the S/C install a one way check valve before ever starting the engine. This way you cant boost the Crank case. I have a couple extra valves laying around...
Yep C5-VERT told me straight up and although I didn't want to believe it, it was true. This is why I basically commented to you as Vert did to me. Sorry. The Tune really is important on a S/C, not enough fuel and too much timing combined with boost spells distruction. The Hyperuetic Pistons were never designed for boost, the clearancs are very tight because the Pistons do no expand..they are a hard but brittle piston..my ring lans were broken in 1.5-2" chunks. Even cars with good PCM tuning have broken pistons..although the application I am thinking of had higher compression than a Z06, his motor lasted about 9 mos. Then the pistons broke. To run a S/C and make it correct, the boost has to be low or as recommended by ATI (w/ a good tune too) or Forged Pistons should be used at a minimum. The problem with driving it until it breaks is the block maybe damaged if the broken lans scar the block.
Did you change the pully that came with your ATI kit??????
vettesdstr, I better install that one way check valve then. Can you give details on how it works and where to install it . How this check valve looks like.
IS this solution will also prevent a cracked piston or its is a different case.
you can buy them from ATR or anyone that sell"s turbo buick parts.this is a common item,what I did is hooked two of the pvc mods inline{two water traps}and ran them to the air bridge on the S/C {my rad is lowered and has an air bridge on the s/c inlet}the faster the s/c spins the more vaccum it sucks,BEWARE you will have to keep an eye on the traps,if they got full of oil it will go directly into the s/c and plumbing,then motor,this is what works for me and NO chance of pressure in the crankcase,possibly vaccum,will have to get a gauge on it and confirm that thought,hope this helps,thanks steve :seeya
Thanx for all the imput, The car had heads and cam installed last year from The Vette Doctors and then they installed the supercharger. The car seems to run fine. I don't race the car and it only happens when I push the accelerator to the floor. I'm running 6PDS of boost. I sure hope I don't need a new motor :mad
I just got off the phone w/ Dennis from The Vette Doctors. Im going to bring it in next week for a compression test. I will let you guys know what happens. Dennis and Carm have always been more than fair. They are real stand up guys
I had that very thing happen to my after installing my intake, intake manifold, headers, etc. I was on the dyno and the dip blew and oil followed. I added additional breathers to the valve covers that run down dash 16 lines to catch cans w/breather filters on top. I had it on the dyno three times since this fix and no more problems. If you look at a regular c5, it has three lines for breathing/pcv. However, the Z06 only has one very small breather that runs to the throttle body.
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