Porsche Engine Internals
Copyright © 2007 Eric Fahlgren
Last updated 2008-01-03 06:40 PST

Porsche Engine Internal Dimensions

This is a list of internal dimensions for the various watercooled flat-six engines. It is intended to help people who wish to swap parts between motors.

Engine Key
TagDescriptionPower
(HP)
Torque
(lb-ft)
M96/01 996 Carrera 3.4 300@6800259@4600
M96/01S 996 Carrera 3.4X51
(non-US according to factory manual)
320@6600266@5000
M96/20 986 Boxster 2.5 201@6000181@4500
M96/21 986 Boxster 3.2 S 248@6250226@4500
M96/22 986 Boxster 2.7 217@6400192@4750

Dimensions
TagBoreStrokeDispRod JournalRod LengthWrist PinCompression HeightPiston DishBlock HeightCR
M96/01 96.0 78.0 3387 ? ? ? ? ? ? 11.3:1
M96/01S 96.0 78.0 3387 ? ? ? ? ? ? 11.3:1
M96/20 85.5 72.0 2480 ? ? ? ? ? ? 11.0:1
M96/21 93.0 78.0 3179 ? ? ? ? ? ? 11.0:1
M96/22 85.5 78.0 2687 ? ? ? ? ? ? 11.0:1

Yellow entries are not confirmed, but calculated from guesses. Red entries are unknown. If you know or can confirm any of these numbers, e-mail me, do it now before you forget.

Notes


Firing Order is 1-6-2-4-3-5

Updates

03 JAN 2008 - EF first pass with data from Porsche factory manuals.

 
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