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Oil starvation on left hand sweepers?

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Old Mar 27, 2012 | 10:27 AM
  #21  
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I havent had any issue with the dryer im using. It runs half inch fittings so its hard to imagine it being to restrictive.
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Old Mar 27, 2012 | 10:33 AM
  #22  
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Originally Posted by davidc1
The PVC mechanism is stock. So, the loss of power I assume is because so much oil is in the combustion chamber that the spark can't ignite the gas? Then, when it does ignite, there is a ton on oil to burn, so hence the blue smoke, correct? Also, I didn't notice the oil light come on...but I didn't really pay specific attention to it.

Also, I would assume this is not harming the engine?
No way is there enough oil that it can't spark it, it's not misfiring. You're partially correct.
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Old Mar 27, 2012 | 10:36 AM
  #23  
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Originally Posted by berny2435
has anyone had their car randomly shut off on a left hander? AP2?
Anyone know the cause?

I was in 2nd gear, top or the RPMs about to redline and then shut off on a left hand sweeper. Just happened last weekend. Only time that has happened to me since I've owned the car. Car was nice and hot. Water temps were fine, don't have a oil temp gauge so I'm not sure where that was at. Car started right up after I gave it 20 seconds though. No check Engine lights. I don't think I hit the key and turned it b/c I'm Pretty sure after it died, I had to turn the key to off and then back to the on to start it. Someone mentioned they did see a little blue smoke before it shut off.
I could only assume a power issue, something loose in the ignition etc. perhaps.

The blue smoke is expected if you cut power during the motor running, you had a bunch of fuel in the chamber and in the exhaust pipe and then you fired it up. No surprise.
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Old Mar 27, 2012 | 10:40 AM
  #24  
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The PVC will create a puff of blue smoke and it really shouldn't cause any issues otherwise as long as it's just a little oil. An extended left corner can run your oil pickup dry potentially and that can cause smoking for a very bad reason... oil starvation and overheating of oil, generally baffles and pumps can help with this but MOST IMPORTANT is making sure oil is absolutely topped off to the limit because even a baffled system running at the 50% line is severely compromised in comparison to a stock oil pan 100% topped off.
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Old Mar 27, 2012 | 11:09 AM
  #25  
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Originally Posted by psychoazn
David, as another random point, I was getting some pretty big power loss and blowing blue clouds big enough to not be able to see though at CVR on Sunday. There's a big ~80+mph exit left sweeper immediately followed by a right sweeper that I trail brake into. As soon as I transition into this right, I'd just lose power for ~3-5 seconds, with a giant blue cloud (and scary engine noises). My theory here is that the oil pools in the right side of the head cover baffle, and then gets pushed left/forward into the front tube that goes to the intake when I transition to the next turn.

I've never experienced the problem before, but I'll be running a catch can for that front tube too now...
Well, that sounds pretty much exactly what happened to me. It's a long left hand sweeper. At high rpms it would happen. At low rpms it wouldn't. Speed and g-forces the same.

It's hard for me to believe it's an oil pickup problem as the sweeper is only about 6 sec long, and although high rpms will draw more oil, I wouldn't think that much more, to cause starvation, but I think enough to foul the plugs.

Considering the huge clouds of blue smoke afterward, I'm thinking lots of oil got into the combustion chamber and was being burned off once I straightened out. Seems easy to imagine enough oil got in there to foul the plugs, preventing ignition, and the loss of power follows.

There's another much shorter left sweeper, were at high rpms, not low, I'd get the smoke, but nowhere near as much, and no loss of power, presumably because not enough oil entered the chamber to prevent ignition.

Also, considering I got some oil seepage from the PCV valve and from the cap which wasn't on extremely tight, this also makes sense.

As an aside....It's hard to believe that after 13 years of this car being on the market, that there isn't a definitive answer, and not so much conjecture. If there was a high budget race car team, this would have been figured out in a weekend.
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Old Mar 27, 2012 | 11:23 AM
  #26  
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lol at the last comment, people that race are spending their time racing

I'm surprised how much is unknown with this and other things as well.
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Old Mar 27, 2012 | 12:56 PM
  #27  
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Originally Posted by macr88
lol at the last comment, people that race are spending their time racing

I'm surprised how much is unknown with this and other things as well.
I guess it's also a reflection of that while there are many guys who "race" their S2000's, when you think about it, the car and the engine never really competed in any professional series' to any great extent, correct?
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Old Mar 27, 2012 | 08:27 PM
  #28  
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Originally Posted by berny2435
has anyone had their car randomly shut off on a left hander? AP2?
Anyone know the cause?

I was in 2nd gear, top or the RPMs about to redline and then shut off on a left hand sweeper. Just happened last weekend. Only time that has happened to me since I've owned the car. Car was nice and hot. Water temps were fine, don't have a oil temp gauge so I'm not sure where that was at. Car started right up after I gave it 20 seconds though. No check Engine lights. I don't think I hit the key and turned it b/c I'm Pretty sure after it died, I had to turn the key to off and then back to the on to start it. Someone mentioned they did see a little blue smoke before it shut off.

Yes. At Streets of Willow. Top of 2nd gear, turning left.
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Old Mar 28, 2012 | 06:17 AM
  #29  
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The AP2 valve cover has a different PCV design, and in theory it is supposed to reduce oil consumption.
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Old Mar 28, 2012 | 06:36 AM
  #30  
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Some AP2's are fine and some aren't, my 06 was fine but my 07 wasn't
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