Eng / Trans Bolt Pattern Change ??

[BoxsterGT]

When did the bolt pattern between eng/trans change on our water cars?

I am reading 02 to 03 model years?

Is this correct?

Does this mean no swap of later motors to earlier models with early trans, unless an adapter is used?

Len

[BoxsterGT]

Here is a 2006 Boxster 6 spd trans.....




and here is a 2009 Boxster 6 spd Trans



And here is a 2017 991 Turbo S Motor.....



So the change in Bolt Pattern has come with the DFI Motor introduction in 2009.

AND, note this motor now has a 10-Bolt Crankshaft.....earlier models have an 8-Bolt Crank.

Len