F54 block hole?

[johnymd]

On my new stroker engine I have noticed a threaded hole(1/8bsp?) just above and to the left of the oil filter mount area. I have not notice or seen this on any other L-series block. The block could have come from a turbo car and was certainly used with a turbo back in the 80's. Could this be a turbo oil feed connection?

 

[Huw]

On my new stroker engine I have noticed a threaded hole(1/8bsp?) just above and to the left of the oil filter mount area. I have not notice or seen this on any other L-series block. The block could have come from a turbo car and was certainly used with a turbo back in the 80's. Could this be a turbo oil feed connection?

Got a picture Johnny?

 

[johnymd]

Not really. It’s all a bit congested there now and I’ve only just noticed it. Probably struggle to get a good pic now. I’ll have a look through my photo library.

 

[johnymd]

Found one. You can just see it to the left of the filter. This boss is not on other l-series blocks that I’ve looked at.

 

[Mark N]

I found this video which seems to show a sensor in that position and I'm guessing that is the turbo feed coming off the oil pressure outlet.

 

[Albrecht]

Knock sensor.