I've been having a real good conversation with Scott Schmeiser in which we exchanged ideas for hot rod Porsche projects. We also talked about trunk mounted oil tanks, but neither one of us had anything to do with these so far. Looking for info about it on the web I came across this picture of a really neat setup, obviously built by Andial. Since I know the fine people at Andial, I decided to give them a call and see what they could tell me. I talked to Dieter, and what he told me was not exactly a how-to, but nonetheless very useful information. Thought I'd share it with you:
Be aware of the relative height of tank-out vs. engine-in, be generous with the diameter of the supply (suction) line, use stock diameters on pressure lines. When fabricating the tank put vertical baffles in the bottom and a horizontal baffle between max oil level and the oil return. The return into tank should be at an angle pointing towards the inside wall.
By the way, the car in the above picture started out as a 1969 912 and matured into, well, something different. The oil tank is a 935 part. I have no further details on the car, but it sure looks slightly more exciting than a stock 912.
This is Dieter in the orange jacket. The car is a 908/02 Spyder, the place is Vaca Valley Raceway, the time is 1972. Talk about experience. Thanks, Dieter!