Porsche "six" lineage Options

[TedK]

Can someone point me towards info sources regarding the Porsche six cylinder engines............engine families, exchangeability, etc. Tried some searches to no avail. Trying to decide on engine options for my six............how big can I make the stock motor, what can swap into its place & related fitment issues, those are the type of questions I have.

Thanks for any help,

Ted K

[John]

The only body mod that may need to be made would be the potential need for a remote oil cooler. Most of the 911's had something to help cool them. I have heard that up to 3.2 may not need the additional cooling. I have always considered more cooling is better.

The 3.6 engines, from what I understand, do not have an engine mounted oil cooler so some modifications would be in order there.

With a stock 3.2, there would be some engine sheet metal modifications to be done. I believe that a CIS motor (2.7-3.0) would need some of the injection parts modified to fit the engine compartment (or engine compartment mods). I think the 2.0-2.4 engines would fit. (The mechanical fuel injection may need to be coaxed into fitting the engine compartment.)

I think any of the air cooled motors (through 1989) with carbs will fit right in.

I know that the 3.2 motors could be made into 3.4 and maybe even 3.8 so I think that would be as big of motor that would fit.

Again, it depends on how much $$$ you have.


I still think a high revving (7.5k) small displacement motor would be fun 2.4 or 2.5 with S cams and mechanical FI or carbs........ The added bonus would be that the 901 gearbox may stand a chance with the torque output of such a motor.