No... we ARE talking about a stock S/C vehicle. This discussion was started by you saying he should lower the compression ratio.

 

wow...this thread just got enthusiastically off topic. You gentlemen mind starting another thread for this? Trying to keep relevant to my woes. No updates as of yet. Just sitting at my house waiting for a tow truck...

 

good stuff

 

update: found time to really focus on this "knock" with a good friend. Turns out the knock is loudest when I depress the clutch pedal (or otherwise keep the car in neutral), and stops whenever I apply the brakes. It does not speed or slow with engine revs, so we've concluded that it must be something with the driveline or brakes. Considering the car sat for months (most likely closer to a year now) and collected a good deal of rust, I'm likely to believe it's something to do with the brakes. But I'm still up for other people's hypothesis.

2nd update: we checked all of the spark plugs out. They were all clean, except when we took out the plug for cylinder #2, we got lots of smoke. Considering we datalogged the car and it showed no knock itself or misfires, and it was the only cylinder doing this, we were a little baffled. Upon closer inspection of the catch can and the ram intake, there was a steady stream of oil from the catch can, all the way down the intake...meaning the catch can isn't doing its job (might have a long term solution for that coming soon).

Upon inspection of the charge pipes, no oil was found anywhere near the cold side or throttle body. Can't say anything about the hot side as we did not inspect that part. Right now, with everything the way it stands, we are concluding that there is too much oil flowing through the turbo, and at idle it's creating too much pressure at the seals, causing oil to push through to the exhaust side.

Two things will happen in the near future: (a) I am getting a restrictor to help with the excessive oil pressure, and; (b) I am installing an oil pressure guage to help monitor the oil pressure in the oil feed line. As for the pcv system, I'm keeping it the same as of right now until a long-distance friend helps out with a revised system. For now, though, I will add a breather to the cap to help out a little. I know that's not the perfect fix, but I'm going into it knowing that it's a temporary solution.