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Help please. What size oil restrictor hole?

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    Help please. What size oil restrictor hole?

    Huge setback!
    September 2013
    We got my car running and it is a real screamer. We keep the tune conservative with a rich mixture and not to much advance so I was looking forward to how it would run with a fine tune. After a short time the engine just did not run right, poor idle and erratic. I noticed that I was using gas like there was no tomorrow. To add insult to injury, the car started to smoke horribly with blue smoke. Due to the poor idle and the smoke, I pulled the plugs to do a compression check. When I turned it over to check #1, gas sprayed out of #6!
    Sure enough, the #6 injector was stuck open! I guessed that I had broken a piston or who knows what. We checked some more and found the turbo's shaft was sloppy (a brand new Holset). So, I ordered new bushings and will install them tomorrow.
    I wonder if the contaminated oil (gas) caused the turbo to wear out or what? Any recommendation for the size of the oil restrictor?
    Chuck

    #2
    I run a 4an restrictor on my HX35 and would recommend it. Do you have any logs to help mitigate a number of relative variables that are used to describe your observations? Hopefully you are running MS or an equivelant...

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      #3
      I used to run a 4an on my journal bearing, and ended up putting a 0.065 restrictor on it.

      1991 325iS turbo

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