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Engine M97 3.8 to 4.0

Engine M97 3.8 to 4.0

Date
Words
Jordi Edo

3.8 to 4.0 M97

Finished engine ready for

Finished engine ready for

Complete engine rebuild M97

Main reasons?

Bore Scoring

Tests?

Engine compression and BS

One crankcase half of the M97 3.8 with three bores and the chain fitted
Assembly of the M97 3.8 documented step by step in the workshop
One M97 3.8 crankcase half with the bores machined, on the stand
New M97 3.8 pistons with the measurements marked in red, on the bench
The M97 3.8 block open, bores and timing chain exposed
Torquing the M97 3.8 crankcase with a torque wrench
M97 3.8 camshafts, chains and guides laid out on the tray
Three M97 3.8 pistons with their connecting rods, ready to fit
The three M97 3.8 pistons with their measurements noted, seen from above
Fitting the pistons into the M97 3.8 block
The new pistons now fitted in the M97 3.8's bores
M97 3.8 cylinder head fitted, with the new hardware laid out in front
Close-up of a new M97 3.8 piston crown with its measurement written on
Close-up of a freshly machined M97 bore, with the honing pattern visible
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