[Green 912]

There are a couple of ways the cool/full filter a 912 motor. All methods have good and bad points but adding full flow filtering is one of the best things you can do to keep a 912 motor going!

Duane Spencer has a book out that details what and how. “Porsche 356 Performance Guide,” published by RPM auto books. Blocks books has it for $25. The book is aimed at the 356 gang but covers the 912 motor very well. He has finished a companion book just for 912s but it is not out yet.

The best method requires the removal and modification of the third piece and modification of the oil pump cover. Other methods are easer to do but have some inherent problems. Most folks do this addition during a rebuild but it is not too hard to do it as an add on. You will have to pull the motor but the 3rd piece comes off easily without much disturbance to the rest of the motor.

If you plan to add cooling a Mocal 13 row cooler is more than enough. I like to put it in the front fender and feed air to it from the horn and fog light openings. I use dash 10 for the lines and Aeroquip fittings only! Always use a thermostat with a cooler.

There are lots of aftermarket oil filter setups that work well. I like the Cannon Meca canister type. You can inspect the filter and see what it trapped when you change it and it will not rupture from over pressure during a cold morning start up. It is available as a spin on so you just install a filter mount in the left rear fender. The filter is easy to get to and no oil all over the motor compartment during a filter change. This method also keeps the motor looking stock from above.
Again if you add a filter and cooler I recommend that you add a thermostat as well. It too is installed in the left fender right next to the filter. If you don’t add the cooler you can go with just the filter but the Cannon Meca canister is strongly recommended!

I have some images from a shoot for the 912 books that I will post.