964 case, what is behind this plug

[Jim2]

This is a 964 case (993 motor) Can anyone tell me what is behind this plug? Can I remove it without disturbing chain ramps etc? (It appears to be a potential location for a turbocharger drain. I'd like to investigate...)

[MBEngineering]

HI Jim
the bolt holds the chain ramp, also the one above, use the drain plug or fit a 3.3 turbo return pump in the L/H cam and a small catch tank to the bottom of the turbo to return from, the oil can cool in there before re-turning to the oil tank.

regards mike

[Jim2]

Thanks Mike. I'll go back to my original plan now and use the drain plug.