Id like to revisit this thread as I have a similar condition that I'd like clarity on. I've owned my '78 SC for over 20 years; when I purchased it, it had the convex sump plate with no drain plug. After a few seasons, I swapped over to (what I thought) was the standard plate with a plug to aid in my changes. I don't recall there being an issue with clearances with the screen or pump, otherwise I wouldn't have done it. Please see pictures attached. I'm due for my spring oil change, so I plan on dropping the plate to see what's what, but I haven't had to do that in years.
My question....How do I know if I really SHOULD have the other non-drain plug sump plate on? For background, the engine was rebuilt many years ago by a well regarded Porsche shop, with some upgrades.
Thank you!
